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Real-time simulation method and system for k-distributed radar clutter

A real-time simulation, K-distribution technology, applied in the radar field, can solve the problem of large storage space requirements

Active Publication Date: 2019-12-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0003] Most of the current K-distribution radar clutter simulations use a simulation scheme based on clutter data storage. The generated clutter data is about to be purified according to the discretization of parameters, and then according to the radar, platform, clutter parameters and clutter scattering type, select the corresponding Clutter data of parameters, but requires a large storage space, and can only simulate discrete changes of radar, platform and clutter parameters

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[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0036] see figure 1 , the system used to realize the K distribution radar clutter real-time simulation method of the present invention includes a complex Gaussian white noise generation module, a real Gaussian white noise generation module, a first linear filter, a second linear filter, and a zero-memory nonlinear transformation module (ZMNL) and a multiplier.

[0037] Among them, the complex Gaussian white noise generation module is used to generate complex Gaussian white noise sequence w 1 (k), the real Gaussian white noise generation module is used to generate a real Gaussian white noise sequence w 2 (k), and w 1 (k) and w 2 (k) are sequences of the same length and independent of each other.

[0038] see figure 2 , the sequenc...

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Abstract

The invention discloses a real-time simulation method and system for K-distributed radar clutter, which belongs to the field of radar technology and is used to solve the problem of K-distributed radar clutter generated based on software platform realization or playback of clutter based on pre-storage software simulation in the prior art. It is difficult to meet the technical problems of real-time radar parameters and clutter scene changes in real-time. The invention generates white noise through a digital circuit, solves complex mathematical operations and transformations by establishing a function lookup table, and realizes real-time independent control of edge probability density PDF and autocorrelation function of clutter. Finally, the real-time generation of K-distribution radar clutter is realized. The invention can realize real-time simulation of K-distribution radar clutter on a digital circuit, and its parameters can be changed in real time with changes of radar parameters and environmental parameters.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a real-time simulation method of radar clutter (including ground and sea clutter, etc.). Background technique [0002] In all stages of design and development of modern radar systems, radar performance and indicators need to be tested. However, if all field tests are used, it will consume a lot of manpower, material resources, and financial resources, and will be easily affected by the external environment, prolonging the development cycle. The rapid development of electronic technology and computer technology makes the simulation test in the inner field possible, which effectively makes up for the shortage of the radar field test. Among them, clutter is an important part of the radar environment. The analysis of a large number of actual measurement data of ground and sea clutter shows that for high-resolution radar, ground and sea clutter is not a simple stationary ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
CPCG01S7/4052G01S7/406
Inventor 江朝抒欧阳帆杨嘉欣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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