Timeline for What does it mean for a GPS PRN to be unserviceable?
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
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| May 25, 2023 at 22:54 | comment | added | Gerry | oops. You're right. For some reason that page doesn't have a link at the bottom to the following article. Here it is. And that is followed by this article. There are also this document at the USCG Navigation Center. | |
| May 25, 2023 at 22:47 | comment | added | BowlOfRed | These are great questions. Perhaps ask them in another forum (space? physics?) and I'll try to address (or in chat...). But the gory details just didn't seem to be in-scope for Aviation.. | |
| May 25, 2023 at 22:28 | comment | added | Chris | @Gerry Interesting stuff! But it ends on a cliffhanger. :( | |
| May 25, 2023 at 22:23 | comment | added | Gerry | For a good tutorial on GPS PRN codes, there's this series of articles on Github. | |
| May 25, 2023 at 22:22 | comment | added | Chris | @RodrigodeAzevedo I am interested in that kind of detail. Feel free to write your own answer! I just don't feel there is anything wrong with an answer that focuses on the practical aspects. Adding "PRN stands for pseudorandom noise" alone doesn't add much unless you add a lot more details to go with it. | |
| May 25, 2023 at 22:11 | comment | added | Rodrigo de Azevedo | @Chris Arguably, Gold sequences are one of the most interesting things about GPS. And why can't two satellites use the same Gold sequence if one of them has been decommissioned? | |
| May 25, 2023 at 22:08 | comment | added | Chris | @RodrigodeAzevedo Having looked up what PRN stands for, it doesn't seem to add much to the answer. It could just as well stand for "Position Reporting Number" as "Pseudorandom Noise" for all the useful information that conveys. ;) | |
| May 25, 2023 at 21:41 | vote | accept | Chris | ||
| May 25, 2023 at 21:38 | comment | added | Rodrigo de Azevedo | You answer without even explaining what PRN stands for | |
| May 25, 2023 at 21:36 | comment | added | Chris | I see, thanks. :) | |
| May 25, 2023 at 21:33 | comment | added | BowlOfRed | They can switch. The PRN is a "logical" number that is reused as sats go into and out of service. There is also a "SVN" (Space Vehicle Number) that is not reused and isn't limited to 1-32. (Your receiver doesn't care about that number, just the PRN.) Status page: navcen.uscg.gov/gps-constellation | |
| May 25, 2023 at 21:20 | comment | added | Chris | So a PRN number essentially just refers to a fixed GPS satellite? Or do physical satellites switch around PRN numbers? | |
| May 25, 2023 at 21:14 | history | answered | BowlOfRed | CC BY-SA 4.0 |