Howtosignalprocessing
- Why is GPS data sometimes inaccurate?
- Does GPS have a delay?
- What is the bandwidth of GPS signal?
- What is GPS L1 and L2 frequency?
Why is GPS data sometimes inaccurate?
GPS satellites broadcast their signals in space with a certain accuracy, but what you receive depends on additional factors, including satellite geometry, signal blockage, atmospheric conditions, and receiver design features/quality.
Does GPS have a delay?
The position accuracy is primarily dependent on the satellite position and signal delay. , or approximately 10 nanoseconds for the C/A code. Since GPS signals propagate at the speed of light, this represents an error of about 3 meters. or about 30 centimeters.
What is the bandwidth of GPS signal?
The bandwidth of the GNSS signals varies, for example a GPS L1 C/A code signal has a bandwidth of 24 MHz. However, due to the signal design a bandwidth of 9.66 MHz will capture enough data to allow the receiver under test to acquire it, track and navigate.
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).
