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A two-dimensional spatiotemporal correlation log-normal clutter realization method and electronic equipment

A logarithmic normal, space-time correlation technology, applied in the electronic field, can solve the problems of big data resource space, high power consumption, etc.

Inactive Publication Date: 2018-12-04
中国兵器科学研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This application provides a two-dimensional spatiotemporal correlation lognormal clutter realization method and electronic equipment, the method is suitable for processing and generating a two-dimensional spatiotemporal lognormal distribution sequence using an FPGA chip, and can solve the problems existing in the prior art When using a DSP chip to generate a two-dimensional space-time correlation logarithmic normal distribution sequence, it requires a large data resource space and high power consumption technical problems

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  • A two-dimensional spatiotemporal correlation log-normal clutter realization method and electronic equipment
  • A two-dimensional spatiotemporal correlation log-normal clutter realization method and electronic equipment
  • A two-dimensional spatiotemporal correlation log-normal clutter realization method and electronic equipment

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Embodiment 1

[0065] Please refer to figure 1 , Embodiment 1 of the present application provides a two-dimensional space-time correlated log-normal clutter implementation method, including:

[0066] Step 101: Obtain a first matrix, which is used to represent time-correlated log-normal clutter sequences;

[0067] Step 102: Determine a second matrix based on a constant λ related to the characteristics of the two-dimensional space-time correlated lognormal clutter, the second matrix is ​​a matrix with M rows and one column, and M is an integer greater than or equal to 1;

[0068] During the execution of the embodiment of the present application, an M×N order matrix can be passed To characterize two-dimensional spatiotemporal correlated lognormal clutter sequences. And, in the actual operation process, the two-dimensional space-time correlated log-normal clutter sequence can be obtained based on the following formula (1):

[0069]

[0070] The first matrix is ​​then z in formula (1) 1...

Embodiment 2

[0131] Please refer to figure 2 , Embodiment 2 of the present application provides an electronic device for realizing two-dimensional space-time correlated log-normal clutter, including:

[0132] The matrix input unit 201 is used to input and obtain a first matrix, and the first matrix is ​​used to represent a time-correlated log-normal clutter sequence;

[0133] A matrix determiner 202, configured to determine a second matrix based on a constant λ related to the characteristics of the two-dimensional space-time correlated lognormal clutter, the second matrix is ​​a matrix with M rows and one column, and M is an integer greater than or equal to 1 ;

[0134] Gaussian sequence matrix generator 203, used to obtain a third matrix, the elements in the diagonal position of the matrix and the lower half of the matrix in the third matrix are Gaussian sequences satisfying the Gaussian distribution, in the third matrix The elements in the upper half of the matrix are 0, and the third...

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Abstract

The invention discloses a two-dimensional space-time correlated lognormal clutter achievement method and an electronic device. A second matrix can be obtained by obtaining a first matrix representing time correlated lognormal clutter sequence based on constants relevant to two-dimensional space-timecorrelatedlognormalcluttercharacteristics, a third matrix of a specific form is obtained through a Gaussian sequence matrix generator, and accordingly corresponding two-dimensional space-time correlated lognormal clutters can be obtained through FPGA processing according to a formula (shown in the description). Due to the fact that a two-dimensional space-time correlated lognormal distribution sequence generated by using a DSP chip can be avoided by the adoption of the technical scheme, the two-dimensional space-time correlated lognormal clutter achievement method has the technical advantages of reducing the device power consumption during processing and generation of the two-dimensional space-time correlated lognormal distribution sequence and saving the data resource space required in the processing process.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method for realizing two-dimensional space-time correlated logarithmic normal clutter and electronic equipment. Background technique [0002] At present, with the increasing requirement for radar resolution, research on clutter characteristics under high-resolution radar systems and high-resolution signal processing algorithms under clutter has very important theoretical value and application prospects. This is because both ground clutter and sea clutter exhibit strong non-Gaussian and spatially correlated characteristics under the high-resolution radar system. [0003] The lognormal (Log Normal) distribution is a kind of non-Rayleigh clutter model proposed earlier, and it is often used to describe the non-Rayleigh distribution envelope clutter. The research shows that the lognormal distribution can accurately fit the sea clutter data under the conditions of sea situation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/16
CPCG06F17/16
Inventor 黄丹禹霁阳李广运孙勇李军田建辉侯德林剧冬梅杨蔚青何圣华刘朝勋姚文杰叶金华
Owner 中国兵器科学研究院