System and method for implementing aerial target monitoring based on public mobile communication network

Abstract

This invention provides a system and a method for monitoring air targets based on public mobile communication network, which sets up or reforms a communication base station as the air transmission base station and distributes a certain numbers of passive receiving stations around it. The passive receive stations receive the echoes of the air transmission base station radiation signals reflected by the air target and measure the delay time, arriving angle, frequency and phase variance of the echo then to transfer the data to a data process center via network, which processes the data in terms of multi-curve surface intersection method to get data of location, speed, course of the air target and send them to users.

Description

technical field [0001] The invention relates to a system and method for monitoring air targets, in particular to a system and method for monitoring air targets based on a public mobile communication network. Background technique [0002] When an aircraft is flying in the air, the ground needs to know its position, speed, heading and other related information in real time, such as flight information for air traffic control and homeland air defense. [0003] At present, when searching, tracking and locating air targets, there are mainly two traditional technical means. The first is to use specially developed radar monitoring equipment to radiate electromagnetic waves in certain specific areas in the allocated dedicated frequency band and to measure the delay time and frequency changes of the echoes, so as to realize the detection of air pollution in the air. Aircraft surveillance. Such systems often work in the homeland air defense warning system and are deployed in a fixed ...

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Problems solved by technology

[0004] We know that the above two dedicated radar systems have disadvantages such as high cost, large size, high power consumption, need to be manned, and low battlefield survivability

And more importantly, special-purpose radar equipment often lacks the ability to detect and monitor low-altitude and ultra-low-altitude targets, and it is difficult to meet the continuous and effective monitoring of various small general aircraft in low-altitude airspace; Due to co-location and other reasons, it is difficult to effectively detect and track small radar reflection cross-sections (RCS), such as stealth aircraft and small general aircraft

If the second type of air traffic control secondary radar equipment is used, not only the airborne and ground equipment is complicated and expensive, but also the installation of the required airborne equipment is difficult

For enemy targets in the non-cooperative system, it is also impossible to use the air traffic control secondary radar equipment to detect and track

[0005] Therefore, for general aircraft such as agricultural flight and powered paraglider, the above-mentioned conventional radar surveillance methods are not applicable

At the same time, due to the lack of corresponding radar secondary response equipment, it is impossible to monitor the low-altitude airspace. At present, the aircraft flying in the low-altitude airspace mainly adopts procedural control methods

This procedural control method has caused many problems such as insufficient airspace utilization efficiency and poor flexibility, which has seriously affected and restricted the development of general aviation.

[0006] At the same time, in terms of homeland air defense, due to the lack of monitoring means for low radar cross-section (RCS) and low-altitude and ultra-low-altitude flying targets, it is difficult to obtain reliable and stable air intelligence information in time, and thus cannot provide effective early warning to the homeland air defense network. information

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