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NAVSYNC CW25 User Manual
Also see for CW25: User manual
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CW25 Software User Manual Page 22 of 50 Rev 03 Date: 06/16/08Copyright ©2007 NavSync Ltd.All Rights Reserved Specifications subject to change without notice.8.2.1.10 POLYS - Satellite Status$POLYS,GT{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}{,ID,s,AZM,EL,SN,LK}*csNote: {} designate optional sections that appear only if there is satellite dataName Description$POLYS Navsync Proprietary NMEA sentence header (Satellite Data)GT Number of GPS satellites trackedID Satellite PRN number (1-32)s Satellite status- = not usedU = used in solutione = available for use, but no ephemerisAZM Satellite azimuth angle (range 000 - 359 degrees)EL Satellite elevation angle (range 00 - 90 degrees)SN Signal to noise ratio in (range 0 - 55 dB/Hz)LK Satellite carrier lock count (range 0 - 255 seconds)0 = code lock only255 = lock for 255 or more secondscs Message checksum in hexadecimal8.2.1.11 POLYI, Additional Information Message$POLYI,JN,jammer,EXT{,efields},INT{,ifields},BLANK*csNote: More than one {efield} or {ifield} may be present, each separated by commas.Name Description$POLYI Navsync Proprietary NMEA sentence header (Additional Information)JN Fixed descriptor fieldjammer Detected Jammer to Noise Ratio [dB/Hz]EXT Fixed descriptor field, indicates the use of externally provided ancillary measurements e.g.received from Network Assistance. All comma separated fields following, up to the INT fielddescriptor, are externally provided measurementsefields DIFF = Differential InputsTSYNC = Time synchronisationCLKB = Clock BiasFREQ = Frequency (of reference oscillator)HPOS = Horizontal positionVPOS = Vertical Position (altitude)VVEL = Vertical VelocityDIST = Distance MovedSPEED = Current SpeedTRACK = Current trackDTRACK = Delta track (change in direction)INT Fixed descriptor field, indicates the use of internally provided ancillary measurements e.g.retrieved from non volatile memory. All comma separated fields following, are internallyprovided measurementsifields TSYNC = Time synchronisationCLKB = Clock BiasFREQ = Frequency (of reference oscillator)HPOS = Horizontal positionVPOS = Vertical Position (altitude)VVEL = Vertical VelocityDIST = Distance MovedSPEED = Current SpeedTRACK = Current trackDTRACK = Delta track (change in direction)BLANK Reserved for future usecs Message checksum in hexadecimal |
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