Gps signal specification

1. What are the specifications of GPS?
2. What kind of signal is used in GPS?
3. What is the signal strength of GPS?
4. What are the properties of GPS signals?

What are the specifications of GPS?

GPS satellites transmit two low power radio signals, designated L1 and L2. Civilian GPS uses the L1 frequency of 1575.42 MHz and the signal generally line-of-sight with expected levels of –140dBm A GPS signal contains three different bits of information — a pseudorandom code, ephemeris data and almanac data.

What kind of signal is used in GPS?

Signals. Each GPS satellite transmits data on two frequencies, L1 (1575.42 Mhz) and L2 (1227.60 MHz). The atomic clocks aboard the satellite produces the fundamental L-band frequency, 10.23 Mhz. The L1and L2 carrier frequencies are generated by multiplying the fundamental frequency by 154 and 120, respectively.

What is the signal strength of GPS?

The typical power level of the GPS signal is -125 dBm.

What are the properties of GPS signals?

GPS signal characteristics

GPS signals consist of a carrier signal with frequency L1 or L2, a unique code assigned to each satellite, and a data message conveying information about satellite position, velocity, and clock bias.