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Target detection system and detection method thereof

A target detection and target technology, which is applied to target detection systems and their detection fields, can solve the problem that the elimination threshold depends on prior knowledge, etc., and achieve the effect of avoiding high false alarm probability, improving detection rate, and reducing missed detection rate.

Inactive Publication Date: 2017-08-15
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

[0008] The automatic deletion unit average constant false alarm detection method and the automatic double elimination unit average constant false alarm detection method obtain the detection threshold by eliminating the maximum and minimum reference units in the reference window, and then take the average method, compared with the unit average constant false alarm The detection method has good detection performance, but the determination of the rejection threshold depends on prior knowledge and has limitations

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  • Target detection system and detection method thereof
  • Target detection system and detection method thereof
  • Target detection system and detection method thereof

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Embodiment Construction

[0046] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for the purpose of illustration only, and in no way limits the invention and its application or usage.

[0047] see figure 1 As shown, the target detection system provided by the present invention includes a radar front-end module, a DAC frequency modulation signal generation circuit, an intermediate frequency signal processing circuit, an A / D analog-to-digital conversion circuit, and a DSP / FPGA back-end signal processing system, wherein the DSP / FPGA signal processing system Including JTAG debugging, OSC clock, SRAM and FLASH storage circuit. The DSP / FPGA signal processing system configures the DAC digital-to-analog converter through the communication interface to generate a sawtooth wave / triangular wave modulation signal, which is processed by an analog filter amplifier circuit to obtain a high-li...

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Abstract

The invention provides a target detection system and a target detection method thereof. The target detection system includes a radar front-end module, an intermediate frequency signal processing module connected to the output end of the radar front-end module; a filter amplifier circuit connected to the output end of the intermediate frequency signal processing module, An A / D conversion circuit connected to the output end of the filter amplifier circuit; a back-end signal processing module connected to the output end of the A / D conversion circuit; a frequency modulation signal generation circuit connected to the output end of the back-end signal processing module. The target detection method firstly selects the maximum value reference unit; then estimates the background noise power, then calculates the power detection threshold, and finally realizes the target discrimination. The invention solves the technical problems that the false alarm probability and missed detection rate of the existing target detection method are relatively high, and the elimination threshold depends on prior knowledge when obtaining the detection threshold. By eliminating the threshold, the maximum value reference unit can be effectively eliminated, which can effectively improve the detection rate and reduce the missed detection rate.

Description

technical field [0001] The invention belongs to the technical field of radar target detection, and in particular relates to a target detection system and a detection method thereof. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] With the rapid development of Advanced Driver Assistance Systems (ADAS) and intelligent driving technology, environmental perception and target detection technologies will develop rapidly. The mainstream detection technologies include millimeter-wave radar technology, laser radar technology and vision technology, and impulse radar. Millimeter-wave radar technology is widely used due to its all-weather and low-cost advantages; impulse radar is a type of ultra-wideband radar, and its essence is to use ultra-narrow pulses to achieve target detection. [0004] Target detection method is ...

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Application Information

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IPC IPC(8): G01S13/04G01S7/41
CPCG01S13/04G01S7/41
Inventor 刘贵如修宇汪军邹姗鲍广喜刘志军
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE