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Half Cycle Ambiguity Resolution Method for GPS, and GPS Attitude Determination System and Method using the same
Half Cycle Ambiguity Resolution Method for GPS, and GPS Attitude Determination System and Method using the same
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机译:GPS的半周期模糊度解算方法及使用该方法的gps姿态确定系统及方法
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摘要
PURPOSE: A GPS(Global Positioning System) receiver system for attitude measurement is provided which comprises a unit capable of measuring a half cycle ambiguity of a GPS satellite signal phase for a short time, and a method is provided which measures the half cycle ambiguity rapidly by comparing GPS satellite data for attitude measurement received from at least two antennas in a bit unit. CONSTITUTION: The GPS receiver system for attitude measurement comprises at least two antennas, and a satellite signal tracking part receiving a signal from a satellite by tracking at least one GPS satellite, and a demodulator part demodulating the received satellite signal into digital data stream, and a measurement part determining a position and a speed and an attitude of a signal receiving body on the basis of the demodulated data. The GPS receiver system further comprises a half cycle ambiguity detection unit. According to the half cycle ambiguity detection unit, the first storing unit stores data bit above 1 received/demodulated from the first antenna temporarily. The second storing unit stores corresponding data bit above 1 temporarily which is received/demodulated from the second antenna and corresponds to the bits stored in the first storing unit, as to the same satellite as that received by the first antenna. A comparator unit compares the data bit stored in the first storing unit with the corresponding data bit stored in the second storing unit. And a judgement part judges a half cycle ambiguity of a received carrier wave according to the comparison result of the comparator unit.
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