Detection method for cooperation detection network Gamma fluctuating target based on cognition
A technology of collaborative detection network and fluctuating targets, applied in measurement devices, radio wave measurement systems, reflection/re-radiation of radio waves, etc., can solve problems such as poor effectiveness of acquisition means, defects in detection methods, and inability to apply, and achieve adaptability Strengthen, improve ability, reduce the effect of cost-effectiveness
Active Publication Date: 2014-07-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
Its method of acquiring target characteristics has poor effectiveness and low precision; at the same time, the exponential fluctuation target model has limitations in describing complex targets in cooperative detection networks
Cannot be applied to cooperative detection network, space, frequency and polarization diversity independent non-uniformly distributed Gamma fluctuation target detection
Therefore, for collaborative detection networks, the theory of detector design by acquiring and utilizing target information is still in its infancy, and the detection method has flaws.
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[0015] The signal transmitted by the cooperative detection network is a simple coherent pulse signal, which is detected under the background of white Gaussian noise.
[0016] In this embodiment, the basic system parameters of the cooperative detection network are firstly determined according to the simple coherent pulse signal to be transmitted, the white Gaussian noise signal, the space topology, the polarized antenna and the working frequency. For the space detection area, the space-time registration parameters are corrected; the Doppler frequency shift of the target relative to the radar at different positions is obtained and stored for later use.
[0017] Example process such as figure 1 shown, including the following steps:
[0018] 1. Cognitive steps:
[0019] Target cognition refers to the acquisition of target statistical parameters by analyzing target echoes and target experience data using scene analyzers and other prior knowledge of targets. As long as it is an e...
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The invention provides a detection method for a cooperation detection network Gamma fluctuating target based on cognition. The method includes the steps that the cooperation detection network Gamma fluctuating target is cognized to obtain target statistical parameters; a Gamma fluctuating target detector is designed by using the parameters obtained through target cognition; echo signals are finally detected through the detector. The target statistical information is used sufficiently, the adaptive capacity and pertinency are high, the problem of designing the detector for the cooperation detection network Gamma fluctuating target is solved, the Gamma fluctuating target is effectively detected, the capacity for detecting the target of a cooperation detection network is improved, and cost-effectiveness of detection benefits to resources is reduced.
Description
technical field [0001] The invention relates to a radar target detection technology, in particular to a cognition-based cooperative detection technology. Background technique [0002] The collaborative detection network is a radar network that uses multiple frequencies and multiple polarization configurations to conduct independent warning and cooperative detection of space areas. For complex radar targets in cooperative detection networks, the traditional Swerling fluctuation model (exponential distribution and 4-degree-of-freedom chi-square distribution) cannot accurately describe the fluctuation characteristics of the target in multiple dimensions, and the Gamma distribution, as a more generalized distribution, includes Exponential, 4-degree-of-freedom chi-square and other distributions can characterize fluctuating targets with non-stationary or non-uniform scattering characteristics. Therefore, it is universally applicable to model the RCS of different channels of the c...
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IPC IPC(8): G01S13/87
CPCG01S7/41G01S13/87
Inventor 孔令讲汪兵艾越刘羽锐姜海超崔国龙易伟杨建宇杨晓波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA