High squint radar imaging device and imaging method based on fpga and dsp

Abstract

The invention discloses an FPGA and DSP-based high-squint high-resolution radar imaging method. The idea of the method is as follows: ping-pong transmission is carried out on obtained first image data, second image data, third image data and fourth image data, after a first DSP1 receives the first image data, the first image data is sent to a second DSP, after the second DSP processes the first image data, the first image data is retransmitted to the first DSP, the first DSP then transits the processed first image data to an FPGA, after a fourth DSP receives the second image data, the second image data is sent to a third DSP, after the third DSP processes the second image data, the second image data is retransmitted to the fourth DSP, and the fourth DSP transmits the processed second image data to the FPGA; and after receiving and processing the third image data, the first DSP transmits the third image data to the FPGA, after receiving and processing the fourth image data, the fourth DSP transmits the fourth image data to the FPGA, the FPGA then transmits the processed various image data to a fifth DSP5 and then transmits the processed various image data to a PC display, and the PC display successively displays the processed various image data.

Description

technical field [0001] The invention belongs to the technical field of radar imaging, in particular to a high squint radar imaging device and imaging method based on FPGA and DSP, namely a field-programmable gate array (Field-Programmable Gate Array, FPGA) and a digital signal processor ( Digital Signal Processing (DSP) large squint radar imaging device and imaging method are suitable for real-time imaging processing of radar echo data to obtain high-resolution SAR images with high squint. Background technique [0002] High-resolution radar imaging with high squint is one of the important working modes of radar, especially in tasks such as terrain matching navigation, air-ground surveillance, and ground target recognition, there are requirements for high-resolution imaging with high squint in radar working mode. [0003] At present, the high-squint high-resolution radar imaging method is relatively mature. When the theoretical research of the method is quite mature, it is ne...

AI Technical Summary

Problems solved by technology

At this time, although the architecture based on the single-chip DSP chip is relatively mature, its computing power is very limited, and the effect of the FPGA method is weak, which cannot meet the real-time performance required by the radar signal processing system, and the radar signal real-time processing system is not suitable for big data. volume real-time processing requirements

Images