SATELLITE SIGNAL AMBIGUITY DETECTING SYSTEM AND A METHOD, FOR SHIP POSITIONING COMPARING GNSS(GLOBAL NAVIGATION SATELLITE SYSTEM) SATELLITE'S ORBIT EPHEMERIS AND SHIP'S DEAD RECKONING DATA

摘要

PURPOSE: A satellite signal ambiguity detecting system and method, for ship positioning can be included in ship position information, watch ambiguity of high potent risk anytime, and detect an ambiguity which can be contained in the satellite signal itself.;CONSTITUTION: A satellite signal ambiguity detecting system for ship positioning comprises a GNSS receiver(100), a ship position calculator(200), a range calculator(300), and an error monitoring unit(400). The GNSS receiver obtains ship position information by using a plurality of satellites. The ship position calculator calculates by presuming the second ship position after certain amount of time from the first ship position. The range calculator calculates estimated range of each satellite and ship by using each satellite's position value at the second position and the position value of the second position. The error monitoring unit watches satellite's error based on each satellite's error increment, by comparing estimated distance between each satellite and ship, and the pseudo-range between each satellite and the GNSS receiver on the second position.;COPYRIGHT KIPO 2013;[Reference numerals] (100) GNSS receiver; (200) Ship position calculator; (300) Distance calculator; (400) Error monitoring unit