Multi-channel large-point parallel pulse pressure acquisition system and method

An acquisition method and large-point technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of unsuitable pulse pressure module packaging and reuse, flexibility and programmability gap, and complex program structure, etc., to achieve good engineering Effects of applying value, reducing computing time, and optimizing time-consuming situations

Active Publication Date: 2020-07-31
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

[0008] In the 2nd issue of "Radar Science and Technology" in 2016, the published document "A Multi-core DSP Range Doppler Imaging Design" introduces a parallel design based on multi-core DSP, which uses 8 cores to co-process large-scale pulse It is aimed at application scenarios that require more than 16384 points of pulse pressure. The program structure is relatively complicated, which is not suitable for the packaging and multiplexing of pulse pressure modules, nor is it suitable for application scenarios below 16384 points of pulse pressure.
[0009] In the 5th issue of "Aerospace Electronic Countermeasures" in 2017, the published document "FPGA-Based Parallel Digital Pulse Pressure Design" introduced a pulse pressure based on FPGA method, which has high processing efficiency, but compared with DSP implementation, there is still a certain gap in the flexibility and programmability of FPGA development

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  • Multi-channel large-point parallel pulse pressure acquisition system and method
  • Multi-channel large-point parallel pulse pressure acquisition system and method

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Embodiment Construction

[0043] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0044] Such as figure 1 As shown, an embodiment of a multi-channel large-point number parallel pulse pressure acquisition method of the present invention is disclosed. In this embodiment, a multi-channel large-point number parallel pulse pressure acquisition method based on 6678 is disclosed, wherein the assumption and channel number are 61 An 8192-point pulse-through readout enters the parallel pulse pressure process.

[0045] An embodiment of the method for obtaining parallel pulse pressure with a large number of points in multiple channels specifically includes the following steps:

[0046] S1. According to the channel number and the pulse number of the current pulse, allocate two dsp cores for executing parallel pulse pressure, denoted as core 0 and core 1. Here the pulse number is 61.

[0047] Among them, since the TI-6678 has a total ...

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Abstract

The invention discloses a multi-channel more-point parallel pulse pressure acquisition method. The multi-channel more-point parallel pulse pressure acquisition method utilizes a DIT-FFT principle to decompose a more-point FFT of a N point into FFT combinations of two N / 2 points which are then distributed to two cores in 6678 for parallel calculation, and two channels can be processed simultaneously for pipelined calculation, so that operation time of a pulse pressure algorithm is remarkably shortened, real-time performance of a multi-channel more-point parallel pulse pressure acquisition system is improved, and the engineering application value is high.

Description

technical field [0001] The invention relates to the technical field of pulse compression, in particular to a 6678-based multi-channel large-point parallel pulse pressure acquisition system and method. Background technique [0002] Since the 1970s, with the maturity of theory and the improvement of technical means, pulse compression technology has been widely used in modern radar systems. Pulse compression technology is the practical application of matched filter theory and related receiving theory. It transmits large-time-width and bandwidth signals at the transmitting end to improve the speed measurement accuracy and speed resolution of the signal; at the receiving end, the wide pulse signal is compressed into a narrow pulse. , in order to improve the range resolution accuracy and range resolution of the radar to the target. [0003] The realization of radar pulse compression requires a large number of calculations, and the real-time performance of radar signal processing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/28G01S7/285
CPCG01S7/28G01S7/285
Inventor 沈謇王志诚余渝生李爽爽赵晗希
Owner SHANGHAI RADIO EQUIP RES INST
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