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  <xs:element id="gsat_ProcureGoodsPerformServicesUponPartnerSaleReceivableMember" abstract="true" name="ProcureGoodsPerformServicesUponPartnerSaleReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ServiceSaleReceivableMember" abstract="true" name="ServiceSaleReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_EquipmentSalesReceivableMember" abstract="true" name="EquipmentSalesReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_SpaceComponentMember" abstract="true" name="SpaceComponentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_GroundComponentMember" abstract="true" name="GroundComponentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_SoftwareFacilitiesandEquipmentMember" abstract="true" name="SoftwareFacilitiesandEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gsat_AccountsReceivablePaymentTerms" abstract="false" name="AccountsReceivablePaymentTerms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_LesseeOperatingAndFinanceLeasesRemainingLeaseTerm" abstract="false" name="LesseeOperatingAndFinanceLeasesRemainingLeaseTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_WarrantsAndRightsOutstandingAmortizationOfFairValueAdjustment" abstract="false" name="WarrantsAndRightsOutstandingAmortizationOfFairValueAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_StandardProductWarrantyPeriod" abstract="false" name="StandardProductWarrantyPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_UnamortizedCapitalizedComputerSoftwareExpense" abstract="false" name="UnamortizedCapitalizedComputerSoftwareExpense" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_CapitalizedComputerSoftwareEstimatedUsefulLife" abstract="false" name="CapitalizedComputerSoftwareEstimatedUsefulLife" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_CapitalizedCostsToFulfillAContractAmortization" abstract="false" name="CapitalizedCostsToFulfillAContractAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_AllowanceForDoubtfulAccountsReceivableProvisionNetOfRecoveries" abstract="false" name="AllowanceForDoubtfulAccountsReceivableProvisionNetOfRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_AccountsReceivableAllowanceForCreditLossWriteoffNetOfAdjustments" abstract="false" name="AccountsReceivableAllowanceForCreditLossWriteoffNetOfAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_GlobalstarSPEMember" abstract="true" name="GlobalstarSPEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_AppleIncMember" abstract="true" name="AppleIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_VariableInterestEntityContributionAmountPaidInKind" abstract="false" name="VariableInterestEntityContributionAmountPaidInKind" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_VariableInterestEntityContributionAmountPaidInCash" abstract="false" name="VariableInterestEntityContributionAmountPaidInCash" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ServiceAgreementPrepaymentReceivableMaximum" abstract="false" name="ServiceAgreementPrepaymentReceivableMaximum" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ServiceAgreementPrepaymentReceivedAmount" abstract="false" name="ServiceAgreementPrepaymentReceivedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ServiceAgreementFeeAccrualAmount" abstract="false" name="ServiceAgreementFeeAccrualAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ServiceAgreementAnnualServiceFee" abstract="false" name="ServiceAgreementAnnualServiceFee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ServicesWholesaleCapacityMember" abstract="true" name="ServicesWholesaleCapacityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_CommercialLoTMember" abstract="true" name="CommercialLoTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ServicesSPOTMember" abstract="true" name="ServicesSPOTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ServicesDuplexMember" abstract="true" name="ServicesDuplexMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ServicesOtherMember" abstract="true" name="ServicesOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_OtherCountriesMember" abstract="true" name="OtherCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ServicesSubscriberDrivenMember" abstract="true" name="ServicesSubscriberDrivenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_SatellitesMember" abstract="true" name="SatellitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_AgreementNameAxis" abstract="true" name="AgreementNameAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="gsat_AgreementNameDomain" abstract="true" name="AgreementNameDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_A2021And2023FundingAgreementMember" abstract="true" name="A2021And2023FundingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_UpdatedServiceAgreementMember" abstract="true" name="UpdatedServiceAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_Phase1ServiceFeeServiceRelatedOperatingExpensesAndCapitalExpendituresMember" abstract="true" name="Phase1ServiceFeeServiceRelatedOperatingExpensesAndCapitalExpendituresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ExtendedMSSNetworkMember" abstract="true" name="ExtendedMSSNetworkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityFundingAgreementAdditionalConsideration" abstract="false" name="ContractWithCustomerLiabilityFundingAgreementAdditionalConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityAdvancePaymentCurrent" abstract="false" name="ContractWithCustomerLiabilityAdvancePaymentCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityAdvancePaymentsOtherService" abstract="false" name="ContractWithCustomerLiabilityAdvancePaymentsOtherService" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityAdvancePaymentsOther" abstract="false" name="ContractWithCustomerLiabilityAdvancePaymentsOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityFundingAgreementFinancingCost" abstract="false" name="ContractWithCustomerLiabilityFundingAgreementFinancingCost" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ServiceAgreementMakeWholeFee" abstract="false" name="ServiceAgreementMakeWholeFee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" abstract="true" name="CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gsat_GlobalStarSystemMember" abstract="true" name="GlobalStarSystemMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_PropertyPlantAndEquipmentAdditionalDisclosuresAxis" abstract="true" name="PropertyPlantAndEquipmentAdditionalDisclosuresAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="gsat_PropertyPlantAndEquipmentAdditionalDisclosuresDomain" abstract="true" name="PropertyPlantAndEquipmentAdditionalDisclosuresDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_SatelliteProcurementAgreementMember" abstract="true" name="SatelliteProcurementAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_LaunchServicesAgreementMember" abstract="true" name="LaunchServicesAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ExtendedMSSNetworkAgreementMDAMember" abstract="true" name="ExtendedMSSNetworkAgreementMDAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ExtendedMSSNetworkAgreementSpaceXMember" abstract="true" name="ExtendedMSSNetworkAgreementSpaceXMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_GrossInterestCostsCapitalized" abstract="false" name="GrossInterestCostsCapitalized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_CapitalizedInterestExpensedDuringPeriod" abstract="false" name="CapitalizedInterestExpensedDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_CentralAndSouthAmericaMember" abstract="true" name="CentralAndSouthAmericaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_RegulatoryAuthorizationsMember" abstract="true" name="RegulatoryAuthorizationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_DevelopedTechnologyAssetsInProgressMember" abstract="true" name="DevelopedTechnologyAssetsInProgressMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ContractWithCustomerReceivableNumberOfCustomers" abstract="false" name="ContractWithCustomerReceivableNumberOfCustomers" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gsat_ContractWithCustomerReceivableBillingPeriod" abstract="false" name="ContractWithCustomerReceivableBillingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_FiniteLivedIntangibleAssetsExcludingAssetsInProgress" abstract="false" name="FiniteLivedIntangibleAssetsExcludingAssetsInProgress" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_CurrentDebtRepaymentMember" abstract="true" name="CurrentDebtRepaymentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_A2023FundingAgreementMember" abstract="true" name="A2023FundingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_A2021FundingAgreementMember" abstract="true" name="A2021FundingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_LongTermDebtPrincipalAmountAbstract" abstract="true" name="LongTermDebtPrincipalAmountAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gsat_DebtInstrumentFaceAmountYearFourMaturityMaximumIncrease" abstract="false" name="DebtInstrumentFaceAmountYearFourMaturityMaximumIncrease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_DebtInstrumentFaceAmountYearFiveMaturityMaximumIncrease" abstract="false" name="DebtInstrumentFaceAmountYearFiveMaturityMaximumIncrease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_LongTermDebtCarryingValueAbstract" abstract="true" name="LongTermDebtCarryingValueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gsat_LongTermDebtCurrentMaturitiesAndVendorFinancing" abstract="false" name="LongTermDebtCurrentMaturitiesAndVendorFinancing" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_DebtInstrumentMaximumPrepaymentReceivable" abstract="false" name="DebtInstrumentMaximumPrepaymentReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_DebtInstrumentPercentageFundedByPartner" abstract="false" name="DebtInstrumentPercentageFundedByPartner" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_PartnershipAgreementProceeds" abstract="false" name="PartnershipAgreementProceeds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_DebtInstrumentCovenantMinimumCashBalance" abstract="false" name="DebtInstrumentCovenantMinimumCashBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_PartnershipAgreementRepaymentPeriod" abstract="false" name="PartnershipAgreementRepaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_ServiceAgreementRepaymentPeriod" abstract="false" name="ServiceAgreementRepaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_FairValueMeasurementsTable" abstract="true" name="FairValueMeasurementsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="gsat_FairValueMeasurementsLineItems" abstract="true" name="FairValueMeasurementsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gsat_SatelliteAndGroundComponentsMember" abstract="true" name="SatelliteAndGroundComponentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_MacdonaldDettwilerAndAssociatesMember" abstract="true" name="MacdonaldDettwilerAndAssociatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ThirdPartyAntennaAndOtherEquipmentMember" abstract="true" name="ThirdPartyAntennaAndOtherEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_NumberOfSatellitesAcquired" abstract="false" name="NumberOfSatellitesAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gsat_PurchaseObligationCapitalExpenditureReimbursementPercent" abstract="false" name="PurchaseObligationCapitalExpenditureReimbursementPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_AccruedCompensationAndBenefitsExcludingTaxesCurrent" abstract="false" name="AccruedCompensationAndBenefitsExcludingTaxesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ContractWithCustomerLiabilityAccruedLiabilitiesAndCustomerDepositsCurrent" abstract="false" name="ContractWithCustomerLiabilityAccruedLiabilitiesAndCustomerDepositsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_OperatingAndFinanceLeaseLiabilityCurrent" abstract="false" name="OperatingAndFinanceLeaseLiabilityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_InterestPayableNoncurrent" abstract="false" name="InterestPayableNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_UncertainIncomeTaxPositionsLiabilityNoncurrent" abstract="false" name="UncertainIncomeTaxPositionsLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_ThermoCapitalPartnersLlcMember" abstract="true" name="ThermoCapitalPartnersLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_XCOMLabsIncMember" abstract="true" name="XCOMLabsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_SupportServicesAgreementMember" abstract="true" name="SupportServicesAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_CommonStockWarrantVestingUponEffectivenessOfGuarantyMember" abstract="true" name="CommonStockWarrantVestingUponEffectivenessOfGuarantyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_CommonStockWarrantVestingUponAdvancesAchievementMember" abstract="true" name="CommonStockWarrantVestingUponAdvancesAchievementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_CommonStockRestrictedMember" abstract="true" name="CommonStockRestrictedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ReverseStockSplitMember" abstract="true" name="ReverseStockSplitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_OperatingLeasesAnnualRentEscalationPercentage" abstract="false" name="OperatingLeasesAnnualRentEscalationPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_OperatingLeasesAnnualBaseRentCurrentYear" abstract="false" name="OperatingLeasesAnnualBaseRentCurrentYear" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_PartnershipAgreementMinimumOwnershipThresholdPercentage" abstract="false" name="PartnershipAgreementMinimumOwnershipThresholdPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="gsat_PartnershipAgreementOwnershipThresholdPeriod" abstract="false" name="PartnershipAgreementOwnershipThresholdPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="gsat_PartnershipAgreementAdvancementGuarantee" abstract="false" name="PartnershipAgreementAdvancementGuarantee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_PartnershipAgreementAmountOfGuaranteedObligations" abstract="false" name="PartnershipAgreementAmountOfGuaranteedObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_PartnershipAgreementAdvancementGuaranteeStockIssuanceTradingDayThreshold" abstract="false" name="PartnershipAgreementAdvancementGuaranteeStockIssuanceTradingDayThreshold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gsat_EquityMethodInvestmentThresholdRequiringAStrategicReviewCommitteeOwnershipPercentage" abstract="false" name="EquityMethodInvestmentThresholdRequiringAStrategicReviewCommitteeOwnershipPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="gsat_EquityMethodInvestmentTransactionThresholdForApprovalRequirement" abstract="false" name="EquityMethodInvestmentTransactionThresholdForApprovalRequirement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_RelatedPartyTransactionFeeBasedOnCostsIncurredPercentage" abstract="false" name="RelatedPartyTransactionFeeBasedOnCostsIncurredPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_DeferredFederalAndStateIncomeTaxExpenseBenefit" abstract="false" name="DeferredFederalAndStateIncomeTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_IncomeTaxDisclosureTable" abstract="true" name="IncomeTaxDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="gsat_PriorTo2025Member" abstract="true" name="PriorTo2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_IncomeTaxDisclosureLineItems" abstract="true" name="IncomeTaxDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gsat_IncomeLossBeforeIncomeTaxesForeignCurrencyGainsLosses" abstract="false" name="IncomeLossBeforeIncomeTaxesForeignCurrencyGainsLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_OperatingLossCarryforwardsPercentageExpiring" abstract="false" name="OperatingLossCarryforwardsPercentageExpiring" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_DeferredTaxAssetsLeaseLiabilities" abstract="false" name="DeferredTaxAssetsLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_DeferredTaxLiabilitiesRightOfUseAssets" abstract="false" name="DeferredTaxLiabilitiesRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_CanadianProvincialMember" abstract="true" name="CanadianProvincialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxesAdjustmentInDeferredRateAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxesAdjustmentInDeferredRateAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationAdjustmentsToReservedDeferredAssetsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationAdjustmentsToReservedDeferredAssetsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingTaxAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingTaxAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpensePermanentDifferencesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpensePermanentDifferencesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCompensationLimitationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCompensationLimitationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImputedInterestAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImputedInterestAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCurrentStateTaxDeductionAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCurrentStateTaxDeductionAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsStockCompensationDeductionLimitationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsStockCompensationDeductionLimitationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsResearchAndDevelopmentAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsResearchAndDevelopmentAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsIntangiblesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsIntangiblesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxesAdjustmentInDeferredRatePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxesAdjustmentInDeferredRatePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationAdjustmentsToReservedDeferredAssetsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationAdjustmentsToReservedDeferredAssetsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingTaxPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignIncomeTaxWithholdingTaxPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpensePermanentDifferencesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpensePermanentDifferencesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCompensationLimitationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCompensationLimitationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImputedInterestPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImputedInterestPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCurrentStateTaxDeductionPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCurrentStateTaxDeductionPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsStockCompensationDeductionLimitationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsStockCompensationDeductionLimitationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsResearchAndDevelopmentPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsResearchAndDevelopmentPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsIntangiblesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsReservedDeferredAssetsIntangiblesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gsat_PerformanceBasedRestrictedStockMember" abstract="true" name="PerformanceBasedRestrictedStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_PerformanceConditionedPerformanceBasedRestrictedStockMember" abstract="true" name="PerformanceConditionedPerformanceBasedRestrictedStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_MarketConditionedPerformanceBasedRestrictedStockMember" abstract="true" name="MarketConditionedPerformanceBasedRestrictedStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gsat_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockMarketPrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockMarketPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
</xs:schema>
