AN INTEGRITY MONITORING METHOD TO DETECT AND IDENTIFY THE GNSS SATELLITE CLOCK ANOMALY BY MONITORING THE PSEUDORANGE MEASUREMENT NOISE

摘要

PURPOSE: A method for detecting a satellite clock failure and identifying a satellite with trouble in a pseudorange measurement noise monitor based global navigation satellite system is provided to improve integrity monitoring performance. CONSTITUTION: An environment setup value for detecting and identifying a satellite failure is set(S100). A pseudorange source information is obtained from a satellite navigation receiver(S200). A clock error of the satellite navigation receiver is estimated(S400). The estimated calculation vector of the clock error of the satellite navigation receiver is defined(S500). The estimated vector of the clock error is defined according to the small group(S600). The expected value of the pseudorange measurement noise is calculated(S700).