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Re: Identifying a GEO GNSS Satellite


From: Sanjeev Gupta
Subject: Re: Identifying a GEO GNSS Satellite
Date: Wed, 28 Apr 2021 13:30:00 +0800

Hi,

I think I have identified it, as GSAT-15, https://en.wikipedia.org/wiki/GSAT-15

The crucial link was: https://www.gps.gov/technical/prn-codes/L1-CA-PRN-code-assignments-2020-Oct.pdf , which lists PRN132 as 93.5E.  This seems to match with my rudimentary observation that it is a bit West of me, and gpsd's reporting of it as SB132.

GAGAN is not usable by me, the service area for its corrections ends a 100km West of me, unfortunately.

Thank you
--
Sanjeev Gupta
+65 98551208     http://www.linkedin.com/in/ghane


On Wed, Apr 28, 2021 at 11:32 AM Sanjeev Gupta <ghane0@gmail.com> wrote:
Hi,

Please see: https://ntpmon.dcs1.biz/

I am at 1N, 103E.  The PRN45 is a few degrees West of me, as I see it.  It seems to be Geostationary.

I am unable to identify it.  I first thought it was GAGAN (India), but they have their nearset GEO *east* of me.  And it is not MSAS (Japan) either.

It could be a BDS2 GEO, there is one (3I-2S) listed at 89.5E.  But my receiver is not BDS-capable (MTK-3301 in NMEA mode).  Would it see a BDS SBAS, because the protocol is similar to, eg, WAAS?

Thank you
--
Sanjeev Gupta
+65 98551208     http://www.linkedin.com/in/ghane

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