Real-time processing system for radar signals of outer radiation source based on GPU (Graphics Processing Unit) and processing method

Abstract

The invention discloses a real-time processing system for radar signals of an outer radiation source based on a GPU (Graphics Processing Unit) and a processing method. The invention mainly solves the problem that conventional technologies are slow in speed and high in development expenses. The system comprises an octo-array element antenna, a data collection unit, a digital channelized receiving unit, a data transmission unit, a data processing unit and a terminal display and control unit. The data collection unit performs amplification, sampling, A / D (Analogue to Digital) conversion and down-conversion for eight signals of a frequency modulation broadcasting base station received by the octo-array element antenna and receives the signals by the digital channelized receiving unit in a digitalized manner; then, the received signals transmitted by the data transmission unit via an Ethernet card to the data processing unit for digital beam forming, clutter cancellation, distance-Doppler two-dimensional correlation, constant false alarm rate detection and amplitude comparison angle detection. The terminal display and control unit performs target infusion and track treatment for the processing result to obtain a target position. According to the real-time processing system for the radar signals of the outer radiation source based on the GPU and the processing method provided by the invention, the data processing speed is fast, and real-time processing of the radar signals of the outer radiation source can be realized with lower cost.

Description

technical field [0001] The invention belongs to the field of radar technology, and relates to radar signal processing technology, specifically a GPU-based external radiation source radar processing real-time system and implementation method, which can realize real-time data processing under Visual Studio+CUDA software integrated development platform, Target detection and location tracking. technical background [0002] In recent years, with the rapid development of weapon technology, especially the emergence of anti-radiation missiles, the safety of the radar system itself, which plays the role of "clairvoyance" on the battlefield, is facing increasingly severe threats. Traditional active radar, which usually appears in the form of a single base, faces "four major threats", namely electronic jamming, ultra-low altitude penetration, anti-radiation missiles, and stealth weapons. As a special form of bistatic radar, passive radar has a separate transmitting station and receivi...

AI Technical Summary

Problems solved by technology

However, due to the non-cooperative, uncontrollable, and unpredictable characteristics of external radiation sources, the detection performance of external radiation source radars is greatly limited, resulting in significantly lower detection accuracy of external radiation source radars than traditional radars.

Therefore, it is necessary to adopt more complex signal processing methods in the project. Multiple radiation sources, comprehensive utilization of multiple receiving stations, and fusion of multi-station processing results can be used to complete target detection more effectively and improve positioning accuracy, but at the same time, it will generate a large amount of calculation. deal with complex problems

[0004] At present, the data processing implementation algorithm of the passive radar positioning and tracking system is mainly through the development of a dedicated signal processing board for data processing. However, this hardware platform is complex to build. For data processing with a large amount of calculation, it can only be realized by increasing the hardware scale. Relatively high development costs

In addition, the development and debugging cycle of the signal processing board is long, the operability is poor, the development difficulty is increased, the processing speed is slow, and it is difficult to meet the requirements of real-time processing of external radiation source signals

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