Device and method for detecting agile coherent target based on FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor)

A target detection and target distance technology, applied in the field of radar communication, can solve the problems of inaccurate target distance and speed information extraction, poor reliability, low signal-to-noise ratio, etc. high effect

Pending Publication Date: 2022-01-07
XIDIAN UNIV
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Problems solved by technology

It is used to solve the problems of long time-consuming, poor reliability, low signal-to-noise ratio, and inaccurate extraction of target distance and speed information in existing target detection methods

Method used

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  • Device and method for detecting agile coherent target based on FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor)
  • Device and method for detecting agile coherent target based on FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor)
  • Device and method for detecting agile coherent target based on FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor)

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] refer to figure 1 , the agile coherent target detection device of the present invention will be further described in detail.

[0034] The agile coherent target detection device of the present invention includes an A / D module, an FPGA module, a first DSP module, a second DSP module, and a PC display module. figure 1 The double arrows in indicate the data flow between modules.

[0035] The A / D module is used to sample the echo signals containing agile phase coherence received by the antenna in real time with a duration of A×prt to obtain an echo signal matrix with a size of A×N for each group, where A represents The number of sampling points in azimuth determined by the number of pulses sent by the radar, prt represents the pulse period determined by the interval of pulses transmitted by the radar, and N represents the number o...

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Abstract

The invention discloses a device and a method for detecting an agile coherent target based on an FPGA (Field Programmable Gate Array) and a DSP (Digital Signal Processor). The device comprises an A / D (Analog to Digital) module, an FPGA module, a first DSP module, a second DSP module and a PC (Personal Computer) module. The method comprises the following steps of: (1) preprocessing echo signals containing agile coherent signals by using an FPGA (Field Programmable Gate Array); (2) enabling the FPGA to send an echo signal matrix to a DSP; (3) constructing a two-dimensional dictionary matrix of each DSP module; (4) acquiring target speed and distance information; and (5) performing imaging and displaying the target distance and speed information. According to the invention, the architecture characteristics of the FPGA and the DSP are fully utilized, the parallel execution advantage and the processing speed of the multi-core DSP are exerted, and the accuracy and the signal-to-noise ratio of the agile coherent target detection are improved on the premise that the real-time performance is well met.

Description

technical field [0001] The present invention belongs to the field of radar communication technology, and further relates to a field-programmable gate array FPGA (Field-Programmable Gate Array) and digital signal processor DSP (Digital Signal Processing)-based agile coherent target detection device in the field of radar imaging technology and methods. Aiming at space moving targets, the invention adopts pulse-to-pulse coherent frequency-agile radar to detect the target area in real time, and obtains the speed and distance information of the target. Background technique [0002] The anti-interference ability of radar is the key to ensure the survivability of the radar system on the battlefield, and the pulse-to-pulse coherent frequency-agile radar has excellent anti-interference ability due to the high-speed irregular jump of the carrier frequency, which provides more opportunities for the detection of moving targets. good platform. At present, the inter-pulse coherent and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/58G06F17/16
CPCG01S13/58G06F17/16
Inventor 李亚超张浩李则灵王家东张鹏郭亮
Owner XIDIAN UNIV
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