There is a PRN "number", like in the range 1-31 In this case you just use the gold code to generate the PRN to correlate with, to recover information about the original signal Then you basically have performed AM demodulation I know one of the steps is you have to find the magnitude of complex numbers in the set of IQ samples you're dealing with, then square it to get a Mag^2 signal. I just know that i'm not going to attempt to demodualte a gps signal from scratch anytime soonĪs a result of watching a team attempt to do it for quite a while You underestimate the power of the gps signal as a factor There's no difference, there's just more steps I think ill stick with ASK/FSK as long as I can and leave the "not hard" stuff up to you :P Packing it in a small package is a different story however Username3: I've done a lot of reading on this, and I can assure you that if you are attentive to detail, it is not hard to design a demodulator If the correlation isn't significant, you disregard that PRN What would be a good transistor to PWM a 120DC electromagnet? Then that original signal has to be demodulated You don't demodulate GPS like you do a normal signalįirst you have to correlate with a PRN to recover the original signal While yes it can be done reliable with a lot of design effort, i'd never begin to call it easy Hence why the core gps chips are not a dime a dozen with 1000s of different manufactures Just because some people went to the moon doesn't mean its an easy procedure. Just because I find it hard doesn't mean it's hard in terms of what's out there The gold code code I got from another website thoughĪnd how many -125dbm signals have you successfully recoevered? :P
TRUCKER DODGING TUMBLEWEED GIF SOFTWARE
I also correlated with PRNs for GPS in software I've designed some basic demodulators in software That s should demand an electrical engineering degree to be least Unless requiring an ASIC and a engineering team is the definition of easy. Designing a demodulator period isn't easy
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