Elements Of Remote Sensing
Which one of the following statements is correct regarding the GPS satellites?

The inclination of axis satellite is 55°
The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)
The nominal altitude is about 20,200 km
All of these

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Elements Of Remote Sensing
Which one of the following residual biases involves the GPS accuracy?

Signal propagation biases due to the sphere and troposphere propagation
All listed here
Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
Receiver-dependent biases due to clock stability with line

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