Unmanned aerial vehicle airborne anti-collision radar system and working method

Abstract

The invention discloses an unmanned aerial vehicle airborne anti-collision radar system and a working method. The system comprises a transmitting board, a receiving board, a power board, a signal processing board and a display control terminal. The method comprises the steps of receiving motion parameters and instructions of an unmanned aerial vehicle platform; generating a system control instruction, a reference clock, a time sequence signal and an emission excitation signal; performing emission signal power division, signal phase shift, signal filtering and signal space radiation; receiving echo signals; performing amplitude limiting, low noise amplification and filtering on the received signal; down-converting the echo signal; filtering and amplifying the intermediate frequency signal and controlling the sensitivity frequency; performing AD sampling on the intermediate frequency signal; processing radar echo signals and radar data; packaging and processing target point track information and BIT information; and sending and displaying the target information and the BIT information. The method has the advantages that cooperative and non-cooperative flight targets in the air can be effectively detected, and target point track information is formed; multiple flying targets can be effectively detected and distinguished, and the system is suitable for airborne installation of an unmanned aerial vehicle; and the system cost is low.

Description

technical field [0001] The invention relates to the field of UAV anti-collision technology, in particular to an UAV airborne anti-collision radar system and a working method. Background technique [0002] In recent years, drones have developed rapidly, and a large number of drones are widely used in logistics, agriculture, security, military, transportation and other industries. However, due to the backwardness of the existing airborne air traffic control monitoring equipment, UAVs cannot actively avoid, and when manned aircraft and UAVs use the same airspace, flight safety cannot be fully guaranteed. Unmanned aerial vehicles cannot be effectively integrated into the existing air traffic control system, threatening the flight safety of manned aircraft, which in turn has brought serious constraints to the development of unmanned aerial vehicles. [0003] At present, the data source of civil air traffic control anti-collision equipment only comes from the monitoring data of c...

AI Technical Summary

Problems solved by technology

[0004] In literature [1], the aircraft broadcasts its own position, speed, and identity information to space through the transmitting system, and receives the broadcast position, speed, and identity information of other aircraft through the receiving antenna to form an airspace flight situation and avoid aircraft collisions. This method can Effectively acquire cooperative target information, but difficult to avoid non-cooperative target information

In literature [2], the aircraft uses the airborne response identification system to inform the ground and other aircraft of its own flight parameters, and at the same time receives the flight parameters of other aircraft, and realizes collision avoidance through the navigation flight control system. Surveillance, but difficult to evade non-cooperative targets

[0005] Documents [1] and [2] adopt broadcasting and response recognition technology, which can only obtain information from cooperative target aircraft equipped with broadcasting and response equipment, but cannot obtain information on non-cooperative targets, and it is difficult to prevent non-cooperative targets from interacting with UAVs. Collide

[0006] In literature [3], the airborne anti-collision radar adopts the pulse Doppler phased array system, which can effectively detect air cooperative and non-cooperative flight targets, and realize UAV collision avoidance, but the system has a large number of channels, high cost, and peak High power, high power consumption, limited bandwidth, large distance blind zone

[0007] Literature [3] adopts the pulse Doppler phased array radar system, which has the disadvantages of large number of channels, high peak power, large ranging blind area, and limited range resolution. It is large in size, heavy in weight, high in power consumption, and high in cost. Commonly used in large military UAVs, it is difficult to use on small and medium-sized UAVs with limited installation space, limited load-bearing capacity, limited cost, and limited output power, and the adaptability of the carrier platform is weak

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