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Device and method for realizing intra-pulse modulation characteristic analysis on the basis of multi-core DSP (Digital Signal Processor)

A technology of characteristic analysis and internal modulation, applied in the field of signal analysis, can solve the problems of long time consumption, low signal-to-noise ratio, low efficiency of modulation identification algorithm, etc., and achieve the effect of improving adaptability and reducing calculation time.

Active Publication Date: 2016-03-23
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

[0010] (1) When faced with signals with more complex intra-pulse modulation methods and lower signal-to-noise ratios, the existing FPGA-based methods for analyzing intra-pulse modulation characteristics will face the problems of difficult algorithm implementation and low efficiency, which have the advantages of certain limitations
[0011] (2) The method of analyzing the characteristics of intra-pulse modulation based on single-core DSP recognizes various modulation formats one by one, which takes a long time
[0012] (3) The sequential execution of the modulation recognition algorithm is inefficient, and the ability to adapt to dense signals is limited

Method used

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  • Device and method for realizing intra-pulse modulation characteristic analysis on the basis of multi-core DSP (Digital Signal Processor)
  • Device and method for realizing intra-pulse modulation characteristic analysis on the basis of multi-core DSP (Digital Signal Processor)

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Embodiment Construction

[0039]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0040] Such as figure 1 As shown, the device of the present invention is based on FPGA and multi-core DSP processor to form a hardware platform for intra-pulse modulation characteristic analysis. FPGA receives the baseband IQ data output by the front-end digital channelized receiver through the high-speed serial GTX interface, and then passes the data through the SRIO interface. Pass it into the DSP memory, and realize the modulation characteristic analysis on ...

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Abstract

The invention puts forwards a device for realizing intra-pulse modulation characteristic analysis on the basis of a multi-core DSP (Digital Signal Processor). An intra-pulse modulation characteristic analysis hardware platform is formed on the basis of FPGA (Field Programmable Gate Array) and the multi-core DSP, the FPGA receives baseband IQ (Intelligence Quotient) data output from a front-end digital channelization receiver through a serial rapid GTX interface, then, the data is transmitted into a DSP memory through a SRIO (Serial Rapid I / O) interface, and same frame of received pulse data in a plurality of DSP cores is subjected to modulation characteristic analysis in parallel. The invention realizes a device capable of improving the speed and the precision of the intra-pulse modulation characteristic analysis of a pulse signal on the basis of the multi-core DSP, and the device adopts a multi-DSP-core parallel operation and an efficient batch processing algorithm and has the characteristics of high data throughput and high algorithm realization efficiency.

Description

technical field [0001] The invention relates to the field of signal analysis, in particular to a device for realizing intra-pulse modulation characteristic analysis based on multi-core DSP, and also relates to a method for realizing intra-pulse modulation characteristic analysis based on multi-core DSP. Background technique [0002] With the rapid development of modern electronic technology, new system radars continue to appear, and the modulation methods and parameters of radar transmission signals are becoming more and more complex. Typical examples include linear frequency modulation signals, nonlinear frequency modulation signals, phase encoding signals, etc. -The spread spectrum signal of the bandwidth product has the characteristics of low probability of intercept (LPI: Low Probability of Intercept). Due to the increase of such radiation signals and various interference sources, the environment that modern signal reconnaissance needs to face is becoming increasingly den...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 何鹏郝绍杰赵新明张峰周浩
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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