Distributed Time Difference Receiver System Based on Photoelectric Technology

Abstract

The invention provides a distributed type time difference receiving machine system based on the photoelectric technology for overcoming the defects of a cable type multi-point positioning system. The distributed type time difference receiving machine system comprises 8 to 20 substation receiving front ends and a centralized type receiving and processing main station, wherein the substation receiving front ends are connected with the centralized type receiving and processing main station. In addition, each substation receiving front end is composed of an antenna, a coupler, a front end optical modulator, a front end optical demodulator and a front end optical multiplexer. The centralized type receiving and processing main station is composed of substation receiving rear ends, a pulse calibration source generator, a standard and sampling clock generator and an A / D and time measurement module, wherein the substation receiving front ends are connected with the centralized type receiving and the processing main station 2 through transmission optical fibers. The distributed type time difference receiving machine system has the main advantages that microwave signal transmission and calibration of a multi-station receiving machine are achieved through microwave photoelectric multiplexing, the stations are flexibly distributed, the time difference measurement accuracy is high, the electromagnetic compatibility is high, and the cost is relatively low.

Description

technical field

[0001] The invention belongs to the technical field of azimuth monitoring and guidance of flying objects, in particular to a multi-station time-difference receiver based on photoelectric technology, and is especially suitable for a distributed time-difference receiver system of an airport level III integrated traffic and guidance radar system. The invention adopts microwave photoelectric multiplexing to realize microwave signal transmission and calibration of multi-station receivers, solves the problems of flexible station arrangement of distributed receivers, high precision of time difference measurement, strong electromagnetic compatibility, relatively low cost, etc., and has strong social effects and market value. Background technique

[0002] At present, the monitoring and guidance of aircraft orientation by the civil aviation system is mainly realized through the airport level III integrated traffic monitoring and guidance system (also known as MLAT mult...

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