Signal

GPS CA Signal Acquisition

GPS CA Signal Acquisition
  1. What does GPS signal acquired mean?
  2. What is CA in GPS?
  3. What is a good SNR for GPS?

What does GPS signal acquired mean?

Acquisition is the first signal processing operation performed on the IF GPS signal3. Acquisition identifies the satellites visible to the receiver and provides the estimation of the Doppler shift in carrier frequency and delay in C/A code of the satellite signals.

What is CA in GPS?

Coarse Acquisition (C/A)-Code

A family of PRN codes transmitted by GPS satellites. Each satellite is assigned one of 32 unique codes in the family. Each code consists of 1,023 chips and is sent at a rate of 1.023 megabits per second. The code sequence repeats every millisecond.

What is a good SNR for GPS?

The recommended signal level for GPS testing is -90 dBm. The expected SNR with this signal level is normally more than 16 dB.

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