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Radar MTI and MTD implementation method based on CUDA heterogeneous parallel acceleration

An implementation method and parallel algorithm technology, applied in radio wave measurement systems, instruments, etc., can solve the problem of not considering thread allocation and delay hidden optimization, and achieve the effect of easy expansion and transplantation, high cost performance, and improved computing speed.

Pending Publication Date: 2021-06-18
XIDIAN UNIV
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Problems solved by technology

This method effectively improves the parallelism of the MTD algorithm, but there are also some shortcomings, such as not considering the optimization of thread allocation and delay hiding

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  • Radar MTI and MTD implementation method based on CUDA heterogeneous parallel acceleration
  • Radar MTI and MTD implementation method based on CUDA heterogeneous parallel acceleration
  • Radar MTI and MTD implementation method based on CUDA heterogeneous parallel acceleration

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The flowchart of the CUDA heterogeneous parallel MTI and MTD algorithm that the embodiment of the present invention provides is as follows figure 1 shown. Specifically, the following steps are included:

[0025] Step 1, set the radar signal processing parameter value in the CPU, and read the pulse-compressed N r ×N c The dimensional echo data matrix X is used as the initial data before MTI processing and copied to the developed GPU memory one ...

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Abstract

The invention relates to the technical field of radar signal processing, and provides a radar MTI and MTD implementation method based on CUDA heterogeneous parallel acceleration. The method comprises the following steps: setting radar signal processing parameter values in a CPU, and copying echo matrix data after pulse compression to a GPU video memory space; dividing a thread organization of a kernel function, and executing a secondary canceller MTI kernel function in the GPU; executing a matrix transpose kernel function in the GPU, then completing FFT parallel computing of multiple groups of Doppler channels by means of a CUFFT library function, and finally executing the matrix transpose kernel function again to obtain an MTD parallel algorithm output result, and transmitting the MTD parallel algorithm output result back to the CPU; and optimizing the kernel functions of the MTI and the MTD by using a CUDA code optimization strategy, and drawing an optimized speed-up ratio curve. In the invention, speed-up ratio of the optimized parallelization algorithm reaches 142.66 times, the real-time performance of radar signal processing can be well met, and expansion and transplantation are also facilitated based on a CUDA software system and a Visual Studio platform development mode.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a method for implementing radar MTI and MTD based on CUDA heterogeneous parallel acceleration, aiming to utilize GPU parallel computing capability and CUDA heterogeneous programming mode to ensure radar processing of large-scale echo data Real-time performance of MTI and MTD algorithms, and easy platform transplantation. Background technique [0002] During signal processing, radar must rely on moving target indication (MTI) technology and moving target detection (MTD) technology to suppress clutter. MTI processing is based on the fact that clutter appears as a smaller Doppler frequency in the frequency domain relative to the radar detection object, and uses a digital canceller to cancel each range unit one by one to filter out still clutter and improve the signal-to-noise ratio. However, MTI cannot obtain the Doppler frequency of moving targets in ad...

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41G01S7/414Y02D10/00
Inventor 贾宗衡孙子棠
Owner XIDIAN UNIV
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