Satellite positioning system receiver

Provided is a satellite positioning system receiver capable of detecting RF reception unit failure. An inspection signal generation unit (100) generates a first inspection signal. An inspection signal transmission unit (200) transmits the first inspection signal. An RF reception unit (300) receives the first inspection signal and a first satellite signal using a reception antenna and generates a second inspection signal and second satellite signal. A first demodulation unit (400A) and second demodulation unit (400B) capture satellites by calculating a correlation value for the second satellite signal and a spreading code. A first failure determination unit (600) compares the signal intensity of the second inspection signal with a threshold and generates a first failure determination signal. A second failure determination unit (700) compares the satellites captured by the first demodulation unit (400A) and second demodulation unit (400B) and generates a second failure determination signal. A state determination unit (900) uses the first failure determination signal and second failure determination signal to determine whether there is a failure and the location of the failure.