SAR data distributed real-time imaging processing system and method based on embedded GPU

Abstract

The invention discloses an SAR data distributed real-time imaging processing system and method based on an embedded GPU, the system comprises a master embedded GPU and a plurality of slave embedded GPUs, the master embedded GPU is connected with an FPGA module I, the slave embedded GPUs are respectively connected with an FPGA module II, DDR3 modules are mounted on the FPGA module I and the FPGA module II, and the FPGA module I is further connected with a plurality of FPGA modules II. According to the invention, the processing speed of the SAR data can be increased, and the real-time performance of SAR data imaging is improved.

Description

technical field [0001] The invention belongs to the technical field of radar imaging and signal processing, and relates to a distributed real-time imaging processing system and method for SAR data based on an embedded GPU. Background technique [0002] Synthetic Aperture Radar (SAR) is a high-resolution imaging radar that forms a virtual radar aperture through platform movement to improve azimuth resolution. Its own working characteristics determine that SAR can penetrate clouds and haze without Affected by weather conditions, SAR can observe the ground all day and all day, and has been widely used in military and civilian fields. [0003] In recent years, with the continuous improvement of resolution and mapping bandwidth, the amount of echo data acquired by SAR satellites has increased dramatically, which has brought enormous pressure to SAR data processing; traditional SAR data processing is to download the original data to the ground for processing, which This data proc...

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Problems solved by technology

[0006] In order to achieve the above purpose, the embodiment of the present invention proposes a distributed real-time imaging processing system for SAR data based on embedded GPUs, which divides a large amount of data through a distributed architecture and processes them asynchronously and in parallel by several embedded GPUs, effectively solving the problem of a single Embedded GPU cannot handle the problem of large amount of SAR data, which greatly improves the data processing speed

[0007] The embodiment of the present invention also provides a distributed real-time imaging processing method for SAR data based on an embedded GPU, which improves the utilization rate of the satellite's full orbit, solves the problem of limited loads of satellites and aircraft, and uses the embedded GPU to improve the performance of the distributed system. Consumption ratio, shorten imaging processing time, realize SAR data on-orbit real-time imaging processing, has the advantages of low cost, low performance per power ratio and low complexity

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