Ultrashort wave dual-channel broadband direction finding system and threshold determination direction finding method

Abstract

The invention discloses an ultrashort wave dual-channel broadband direction finding system and a threshold determination direction finding method. The system comprises an antenna array, a dual-channelradio frequency unit, a signal processing unit and a processing terminal, wherein the antenna array receives a wireless signal; the dual-channel radio frequency unit is connected with the antenna array and the signal processing unit; the signal processing unit receives the signal processed by the dual-channel radio frequency unit and performs signal monitoring; and the processing terminal is connected with the signal processing unit, receives a data signal output by the signal processing unit and performs display and storage of a monitoring result, and meanwhile, is also used for users to input direction finding parameters. According to the system and the method provided by the invention, with the radio frequency unit and the signal processing unit, the signal is monitored, meanwhile, a corresponding antenna is selected according to a threshold deviation value for inputting, and signal direction finding is executed according to signal phase difference received by different base linesof the antennae. With the system and the method provided by the invention, accuracy of direction finding of the direction finding system can be improved to a greater extend, and false alarm to the signal is reduced.

Description

technical field [0001] The invention relates to the field of ultrashort wave dual-channel signal direction finding, in particular to an ultrashort wave dual-channel broadband direction finding system and a threshold determination direction finding method. Background technique [0002] The direction finding system is a tool that is considered to be used to determine the orientation of intelligence transmitting stations of radio signals, illegal broadcast signals, or radio frequency radiation sources such as radar. In actual use, accurate and efficient direction finding capabilities are essential for all military and civilian fields. important. With the increasingly powerful and popular functions of personal drones, drones will pose a great threat to airports and state secret departments, and illegal broadcasting stations have been banned repeatedly. Security risks. The existing direction-finding system performs direction-finding for all signals in the frequency band during ...

AI Technical Summary

Problems solved by technology

The existing direction-finding system detects the direction of the signal in the frequency band, and does not distinguish the signal-to-noise ratio and signal power value of the signal, which will cause many false alarms and lose the efficiency of direction-finding

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