Joint estimation CRLB-based distributed radar optimal configuration constructing method

A distributed, radar technology, applied in the direction of design optimization/simulation, calculation, special data processing applications, etc., can solve the lack of practical feasibility, located on the side of the radar network, will not appear in the proposed by H.Godrich et al. Problems such as the center of the circle where the radar network is located achieve a reliable and feasible effect

Active Publication Date: 2017-09-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

H.Godrich et al. in the United States proposed a station layout optimization method based on the joint positioning accuracy of the target’s horizontal and vertical coordinates, and solved the analytical expression for the optimal configuration of the radar network. However, in its optimal configuration, the radar network Each transmitting node and receiving node are evenly distributed on the ci

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  • Joint estimation CRLB-based distributed radar optimal configuration constructing method
  • Joint estimation CRLB-based distributed radar optimal configuration constructing method
  • Joint estimation CRLB-based distributed radar optimal configuration constructing method

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example

[0083] In this example, the relevant simulation parameters are as follows,

[0084] Table 1 Simulation parameters

[0085]

[0086] The geometric configuration of the linear network and the geometric configuration of the arc network are as follows figure 2 As shown, and the linear network radar spacing l in the figure 1 = l 2 = l 3 , the angle θ of each arc segment of the arc network 1 = θ 2 = θ 3 .

[0087] The optimal configuration and figure 2 The two network configurations shown are used to simulate the angle estimation accuracy of the equivalent single-base target angle of the distributed radar network under different baseline lengths. The results are as follows image 3 shown.

[0088] Depend on image 3 It can be seen that with the increase of the total baseline length of the radar network, the estimation accuracy of the equivalent single base target angle gradually improves. Among the three different configurations, the estimation accuracy of the equiva...

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Abstract

The invention discloses a joint estimation CRLB-based distributed radar optimal configuration constructing method. According to the method, a distributed radar network is equivalent to a large-aperture radar so as to perform radar detection performance analysis; the CRLB for equivalent single base distance and equivalent single base target angle estimation is derived; an optimization model with the minimizing the CRLB as an objective function is constructed; the limitations of the location of the radar in practical application are considered; the constraint conditions of the observation angles of each radar node are added in the model; and by means of rigorous mathematical derivation, a practically feasible optimal network configuration and the analytic expression thereof are obtained. Therefore, the method of the invention has high practical feasibility and reliability.

Description

technical field [0001] The invention belongs to the technical field of distributed radar, and in particular relates to a method for constructing an optimal configuration of a distributed radar network based on joint estimation CRLB. Background technique [0002] Low-frequency band (such as P-band) radar system has attracted extensive attention because of its unique advantages in detecting high-speed weakly scattering targets. However, due to the long wavelength of the low-frequency signal, the beam width of the signal is large when the antenna scale is fixed, which will lead to poor angle measurement accuracy of a single radar. To solve the above problems, one of the methods is to introduce the concept of distributed radar into the low-frequency radar system, and use the wide-area distribution topology of distributed radar in space to achieve high-precision angle measurement. At present, the United States, Germany, the United Kingdom, and China's Nanjing Institute of Electr...

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Application Information

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IPC IPC(8): G01S7/42G06F17/50
CPCG01S7/42G06F30/20
Inventor 刘飞峰曾涛陆韬宇陈新亮龙腾
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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