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A pulse compression processing method and device based on multi-core DSP

A technology of pulse compression and processing method, which is applied in the field of signal processing, can solve the problems of resource consumption and low efficiency of DSP core processing data, and achieve the effect of time-consuming processing and saving processing resources

Active Publication Date: 2021-04-02
成都汇蓉国科微系统技术有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Using the core to process data movement requires opening a new area in the valuable storage space in the core to store the rearranged data, and the efficiency of DSP cores to process data movement is not high
If EDMA is used for data movement, the processing rate and efficiency are very high, and it does not need to occupy the computing resources of the DSP core, but it needs to consume the resources of the peripherals

Method used

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  • A pulse compression processing method and device based on multi-core DSP
  • A pulse compression processing method and device based on multi-core DSP
  • A pulse compression processing method and device based on multi-core DSP

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Embodiment Construction

[0070] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0071] According to the contents of the present invention, the multi-core DSP chip model used in the present invention is TMS320C6678. It is an 8-core DSP processor with KeyStone architecture. The frequency of each CorePac core is up to 1.25GHz, providing powerful fixed-point and floating-point computing capabilities. At the same time, the chip integrates multi-core navigator, SRIO, Gigabit Ethernet and EDMA, etc. peripherals. TMS320C6678 has 8 C66x cores, the typical speed is 1GHz, each core is configured as: 32KB Level 1Data SRAM, which runs at the same speed as the DSP core, and can be used as ordinary data memory or data cache; 32KB Level 1Program SRAM , it runs at the same speed as the DSP core, and can be used as an ordinary program memory or program Cache; 512KB LL2 SRAM, whose operating speed is half that of the DSP cor...

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Abstract

The invention provides a pulse compression processing method and device based on a multi-core DSP. A sequence multiplication method is used for replacing FFTSHIFT / IFFTSHIFT. Before FFT / IFFT transform,a special sequence g[n] is constructed based on the length of an input signal a[n]. Multiplication between the a[n] and g[n] is performed and then corresponding FFT / IFFT processing is carried out, thereby completing FFTSHIFT / IFFTSHIFT equivalently. With the pulse compression method, the processing resources are saved effectively; and the processing consumed time is shorter than that required by the traditional pulse compression method.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a multi-core DSP-based pulse compression processing method and device. Background technique [0002] In the process of radar signal processing, pulse compression is an effective means to simultaneously improve the range and range resolution of radar. To put it simply, the radar at the transmitting end transmits a radar signal with a large time-width-bandwidth product; then, it becomes a narrow pulse after being "compressed" at the receiving end. The method of implementing pulse compression uses a matched filter to filter the radar echo signal through the optimal matched filter, and then outputs the signal with the maximum signal-to-noise ratio, which is the required narrow pulse signal. According to the basic properties of the Fourier transform, the signals convolved in pairs in the time domain are converted to the frequency domain by multiplying the corresponding spectrum. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/292
CPCG01S7/292
Inventor 王驰胥秋张重九汪宗福张平
Owner 成都汇蓉国科微系统技术有限公司
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