A frequency-polarization configuration method suitable for cooperative detection network
A technology of configuration method and polarization method, which is applied to radio wave measurement systems, instruments, etc., can solve problems such as the degradation of detection performance of cooperative detection networks, and achieve the effects of improving target detectability, improving detection performance, and reducing complexity
Active Publication Date: 2016-05-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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However, it is not enough to improve the detection performance of targets only by using spatial diversity to obtain target diversity information. When a certain type of target has a weak backscattering intensity for a certain frequency and polarization electromagnetic wave, it will lead to the failure of the cooperative detection network. Problems where detection performance drops dramatically
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[0023] The specific process of the cooperative detection network frequency-polarization configuration method is as follows: figure 1 Shown:
[0024] Step 1. Determine the radar system parameters of the collaborative detection network
[0025] 1.1 Determine the parameters of the collaborative detection system
[0026] Set the total number M of radars in the cooperative detection network and the spatial position of each node's radar; each node's radar samples a dual-polarization antenna;
[0027] 1.2 Obtain target prior information
[0028] Get targets in different
[0029] The radar cross section RCS data under the combination of observation angle position, frequency and polarization mode is used as prior information σ(θ n ); RCS data σ(θ n ) can be obtained through actual measurement, electromagnetic simulation and other channels. Among them, the target attitude angle range is (-π~π); there are J decorrelation frequency points in the transmitting frequency band, which ar...
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The invention discloses a frequency-polarization configuration method suitable for a collaborative detection network. The frequency-polarization configuration method suitable for the collaborative detection network includes that configuring a different transmitter carrier frequency for each node radar, and configuring a different polarization mode for an antenna of each node radar to acquire richer frequency and polarization diversity information except space diversity. Based on the maximum weighted average detection probability criterion, the operation of configuring an optimal frequency diversity mode and an optimal polarization diversity mode for each resolution unit of the space is suitable for any attitude angle of the target. Compared with the uniform configuration for the whole detection space, the detection performance of a collaborative detection system is improved through configuring an optimal frequency and an optimal polarization configuration proposal for each detection unit.
Description
technical field [0001] The invention belongs to the technical field of radar target detection. Background technique [0002] Using multiple radars to form a cooperative detection network, using the principle of measuring targets from multiple perspectives, the space diversity gain is obtained through the fusion of multi-sensor information, which greatly improves the range of radar detection power and improves the detection performance of targets. However, it is not enough to improve the detection performance of targets only by using spatial diversity to obtain target diversity information. When a certain type of target has a weak backscattering intensity for a certain frequency and polarization electromagnetic wave, it will lead to the failure of the cooperative detection network. Problems where detection performance drops dramatically. [0003] At present, the main principle of frequency configuration selection in frequency diversity technology is: select the required freq...
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IPC IPC(8): G01S7/42
CPCG01S7/024G01S7/42
Inventor 孔令讲王佰录杨益川李溯琪易伟崔国龙杨建宇杨晓波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA