High-precision distributed pulse signal time difference of arrival detection system
A pulse signal and detection system technology, which is applied in the field of civil aviation, can solve the problems of difficult wiring and cable layout, and the distance between stations cannot be too large, so as to reduce the target positioning error and improve the overall performance.
Active Publication Date: 2011-04-20
THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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The invention discloses a high-precision distributed pulse signal time difference of arrival (TDOA) detection system. The system consists of a time of arrival (TOA) detection module in a multi-point positioning distant station and a target TOA calculation module in a multi-point positioning central processing station; and the system synchronously corrects time delay errors of a system time synchronization signal processing channel and a target signal processing channel by adopting a method combining global position system (GPS) common-view technology and reference responder synchronization error correction, and corrects TOA measurement errors and TDOA measurement errors in real time by using multiple filter and tracking algorithms. The system makes up the defects of single mode, and realizes high-precision distributed pulse signal TDOA detection so as to reduce the target positioning errors and improve the integral performance of a multi-point positioning system.
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