Gps code

The two GPS codes are called coarse acquisition (or C/A-code) and precision (or P-code). Each code consists of a stream of binary digits, zeros and ones, known as bits or chips. The codes are commonly known as PRN codes because they look like random signals (i.e., they are noise-like signals).

1. How is GPS signal encoded?
2. What is CA code and P code?
3. What is GPS L1 L2 L5?
4. What is GPS L1 and L2 frequency?

How is GPS signal encoded?

In the case of the original GPS design, two frequencies are utilized; one at 1575.42 MHz (10.23 MHz × 154) called L1; and a second at 1227.60 MHz (10.23 MHz × 120), called L2. The C/A code is transmitted on the L1 frequency as a 1.023 MHz signal using a bi-phase shift keying (BPSK) modulation technique.

What is CA code and P code?

The major difference in the codes is in the chip rate. C/A-Code is transmitted at a 1.023 megahertz chip rate while P-Code is transmitted at a 10.23 megahertz chip rate. The other major difference is that while C/A-Code is transmitted on a single frequency (L 1), P-Code is transmitted on two frequencies (Ll & L2).

What is GPS L1 L2 L5?

Frequency Plan. GPS satellites transmit on two frequencies—L1 (1575.42 MHz) and L2 (1227.60 MHz). In the future, there will be a third frequency—L5 (1176.45 MHz).

What is GPS L1 and L2 frequency?

All GPS satellites broadcast on at least two carrier frequencies: L1, at 1575.42 MHz, and L2, at 1227.6 MHz (newer satellites also broadcast on L5 at 1176 MHz).