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MIMO radar transmitting antenna arrangement method based on virtual antenna Kuhn-Munkres algorithm

A transmitting antenna and virtual antenna technology, applied in the field of signal processing, can solve problems such as the inability to guarantee the global optimal solution, and achieve the effects of ensuring target detection performance, fast operation speed, and solving antenna layout problems

Active Publication Date: 2020-08-07
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

Although the greedy algorithm is excellent in terms of calculation speed, it cannot guarantee the global optimal solution

Method used

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  • MIMO radar transmitting antenna arrangement method based on virtual antenna Kuhn-Munkres algorithm
  • MIMO radar transmitting antenna arrangement method based on virtual antenna Kuhn-Munkres algorithm
  • MIMO radar transmitting antenna arrangement method based on virtual antenna Kuhn-Munkres algorithm

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Embodiment Construction

[0038] For the convenience of description, first define the following:

[0039] Bold lowercase letters indicate vectors, bold uppercase letters indicate matrices, ( ) * is the conjugate, (·) T For the transpose, ( ) H is the conjugate transpose, Diag{} represents block diagonal matrix, diag{} represents diagonal matrix, I K is the identity matrix of order K, and det(·) represents the determinant of the matrix. Indicates the mathematical expectation, and Var{} indicates the variance.

[0040] Consider a MIMO radar system with N receiving antennas whose positions are known as (x R,n ,y R,n ),n=1,...,N, M transmitting antennas have Q optional grid points, the position is (x T,q ,y T,q ), q=1,...,Q, where the receiving antennas and transmitting antennas are separated by large intervals. The transmit signal of the mth transmit antenna is The normalized waveform is Indicates the emission energy, T s Indicates the sampling interval, and the sampling time is k, k=1,...,K...

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Abstract

The invention discloses an MIMO radar transmitting antenna arrangement method based on a virtual antenna Kuhn-Munkres algorithm, and belongs to the field of signal processing. According to the MIMO radar transmitting antenna arrangement method, under the Neyman-Pearson criterion, the output signal-to-noise ratio of a detector is used as a detection performance evaluation index. In the method, based on a matching theory in a bipartite graph, transmitting antennas and selectable grid points are regarded as vertexes in the bipartite graph, and performance influences generated by antenna arrangement are regarded as edges with weights in the bipartite graph. Due to the fact that the number of the transmitting antennas and the number of the grid points are different, an original antenna arrangement problem is converted into an MWM problem in the asymmetric bipartite graph; a symmetric bipartite graph is constructed by adding virtual antennas, so that the optimal positions of the transmittingantennas can be selected by applying the Kuhn-Munkres algorithm. The KM algorithm based on the virtual antennas is called as a VKM method. Through the VKM method provided by the invention, the optimal positions can be selected in an allowed area to place the transmitting antennas, and complexity is relatively low.

Description

technical field [0001] The invention belongs to the field of signal processing, relates to the problem of transmitting antenna arrangement in the technical field of MIMO radar target detection, and is suitable for layout design of MIMO radar transmitting antenna. Background technique [0002] The concept of MIMO (Multiple Input Multiple Out) radar was originally derived from the multiple input multiple output technology in communication, and it can be divided into two categories: co-located MIMO radar and separate MIMO radar. For the split antenna MIMO radar system, because it can detect the target from all angles simultaneously, so as to realize the gain of space diversity, it has higher target detection performance. The location selection of the antenna has an important impact on the performance of the radar system. In the case of increasingly complex electromagnetic environment, how to arrange the antenna to better improve the performance of the radar system has become an...

Claims

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Application Information

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IPC IPC(8): G01S13/00G01S13/02G01S7/40G06F30/20G06F111/10
CPCG01S13/006G01S13/02G01S7/4004G06F30/20G01S2013/0245G06F2111/10
Inventor 孙丽何茜
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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