Timeline for sampling frequency of GPS
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 26, 2015 at 17:01 | answer | added | Dominic | timeline score: 1 | |
| Aug 8, 2015 at 7:10 | comment | added | Moti | Do you know the specific carrier you look for? As far as I understand a GPS signal is very narrow frequency. You want to filter out the jamming with a simple filter around the specific GPS carrier. | |
| Aug 8, 2015 at 3:11 | comment | added | Won Seok Lee | @Moti Thank you for your comment. I've already use BPF for getting signal with center freq = 4MHz, band width = 2MHz. Since Jamming frequency can be in this band [3MHz, 5MHz], I used adaptive filter. (Jamming frequency is totally unknown). | |
| Aug 8, 2015 at 3:03 | comment | added | Moti | Why adaptive filter? Just use a band pass around the center frequency of the GPS signal before getting the phase difference. The sampling frequency in your case, since you assume a jamming tone, need to be twice the jamming tone frequency (assuming it could be higher that the GPS frequency). This will allow you to nicely filter the jamming out. Your filter is designed based on how close you anticipate the jamming frequency to the GPS one. | |
| Aug 7, 2015 at 6:47 | history | asked | Won Seok Lee | CC BY-SA 3.0 |