DRAFT IS-GPS-705A Comment Resolution Matrix - GPS.gov

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IS-GPS-705 CRMCID Originator/Org. Page/Para Importance Comment PO Resolution & Concurrence Notesto read, “These satellites are not operational andhave all been placed in disposal orbits.”155 Martin/Wang/Yi/BakemanAerospacePage: 10Para: 3.3.1.2SFrom: 6.2.2.2.1 Block II SVs. See paragraph6.2.2.2.2 of IS-GPS-200. These satellites do notbroadcast the L5 signal.Final To: N/ARationale: Block II characteristics are irrelevant tothis documentComment:From: Correlation loss is defined as the differencebetween the signal power received in thebandwidth defined in 3.3.1.1 and the signal powerrecovered in an ideal correlation receiver of thesame bandwidth which ideally performs losslesscorrelation using an exact replica of the waveformwith an ideal sharp-cutoff whose bandwidthcorresponds to that in 3.3.1.1, and whose phase islinear over that bandwidth.Final To: Is: (Revert to original language)Rationale: The change will be made uponconfirmation that all Block II satellites are in disposalorbits without any chance of becoming reactivated.This change will be downgraded to Administrativesince it does not change the technical baseline.Concurrence: ConcurRationale:PO Resolution: RejectRationale:Concurrence: ConcurRationale:(05/13/09) 10-sept-09: refer to MikeDeelo's power point presentation. Updateddoc. Per presentation. There is proposedwording from the corr. Loss tiger team thathas been vetted.156 Martin/Wang/YiAerospacePage: 12Para: 3.3.1.6.1SRationale: CRM disposition: section wording toremain open. Awaiting output of working groupfor wording.Comment:From: Table 3-IV. Space Service Volume (SSV)Received Minimum RF Signal Strength for GPS IIISatellites over the Bandwidth Specified in 3.3.1.1Final To: Is: Table 3-IV. Space Service VolumeMinimum Received L5 Signal Power - GEO BasedAntennasPO Resolution: AcceptRationale: Conflicting comments; need to resolve atICWG.Concurrence: ConcurRationale:(05/13/09) Accept. Further clarification ofthe orbit is required to conform withcurrent GPS space segment requirements.10-sept-09: ICC included the reference tothe GEO Based antennasRationale: CRM disposition: minimum power58
IS-GPS-705 CRMCID Originator/Org. Page/Para Importance Comment PO Resolution & Concurrence Noteslevels apply to GEO orbits.157 Martin/Wang/YiPage: 14 SComment:PO Resolution: RejectAerospacePara: 3.3.1.7.3From: The group delay differential between theradiated L5 signal with respect to the EarthCoverage signal for users of the Space ServiceVolume is given by the Block III Space Contractor(TBD). The details are provided in TBD.Final To: Is: (Remove)Rationale: Currently this is a placeholder until the TBDhas been resolved.Concurrence: ConcurRationale:(05/13/09) Accept. Consistency in neededamong the civil specs.158 Martin/Wang/YiAerospacePage: 14Para: 3.3.1.9SRationale: CRM disposition: section should beremoved from this document.Comment:From: The transmitted signal shall be right-handcircularly polarized (RHCP). For the angular rangeof ±14.3 degrees from boresight, L5 ellipticity shallbe no worse than 2.4 dB. For Block IIIA theangular range of ±13.8 degrees from nadir, L5ellipticity shall be no worse than 2.4 dB.Final To: Is: The transmitted signal shall be righthandcircularly polarized (RHCP). For the angularrange of ±14.3 degrees from boresight, L5ellipticity shall be no worse than 2.4 dB. For BlockIIIA the angular range of ±13.8 degrees (pluspointing error) from nadir, L5 ellipticity shall be noworse than 2.4 dB. Pointing error is described inparagraph 3.2.8.1.1.3 of SS-SS-800.PO Resolution: RejectRationale: The contractor has to meet therequirement inclusive of any pointing errorintroduced by their design.Concurrence: ConcurRationale:(05/13/09) Accept159 C. ChuiAerospacePage: 10Para: 3.3.1.2SRationale: ClairityComment: (1) In the definition of correction loss,it states that the receiver “ideally performslossless correlation”. If that is the case, why a 0.4dB loss is allocated to the correlation receiver? (2)It appears that there are words missing ormisplaced in the 4 lines that define CorrelationLoss Suggested Change: The vehicle payloadPO Resolution: A/CRationale: Language is currently being reworked.Concurrence: ConcurRationale:05/01/09: Concur to defer the resolution tothe next ICWG. 10-sept-09: ICC has placedthe language per the corr. Loss tiger team.10/01/09: This section was under rigourousreview and the ultimately the consensus ofthe ICWG community was to revert towording similar to the IS-GPS-800.59
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DRAFT IS-GPS-705A Comment Resolution Matrix - GPS.gov

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