Radar detection capability analysis method in complex mountainous region environment
An analysis method and technology of detection capability, applied in the field of radar detection, can solve the problems of high algorithm complexity, incomplete theoretical system, large amount of calculation, etc., to improve execution efficiency, facilitate real-time calculation, and save time.
Active Publication Date: 2020-07-10
中国科学院电子学研究所苏州研究院
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Problems solved by technology
[0003] At present, there are relatively few studies on the influence of complex mountainous environments on radar detection range, and the theoretical system is not perfect
Some literature (Calculation of detection power of radar network under terrain shadowing conditions[J]. Liu Xianglan, Peng Shirui, Nan Hao, Wang Xiaoyan. Journal of Air Force Early Warning Academy. 2017(04); A DEM-based method for determining the blind area of radar terrain shadowing[J]. Zhou Zongwei, Xiong Jiajun, Jiang Jing, Huang Yuanyuan. Journal of Air Force Early Warning Academy. 2013(05)) The calculation of radar detection range considers both surface undulating terrain shadowing and earth curvature terrain shadowing, but involves the conversion of radar coordinates and geodetic coordinates, and elevation values The interpolation calculation of the calculation is relatively large
There are also some literatures (Research on the performance algorithm of radar detection range under the influence of complex terrain[J]. Bai Yubing, Yu Xiaoyou, Chen Shouzhe, Yin Ling, Chen Tiejun. Computer Science. 2013 (S1); A Subdivision Method to Unify theExisting Latitude and Longitude Grids.CHENG Chengqi,TONG Xiaochong,CHEN Bo,etal.ISPRS International Journal of GeoInformation.2016)]Based on the principle of geometric optics, a calculation method for radar detection range under the influence of single-peak and multi-peak terrain is proposed. Strong terrain adaptability, but high algorithm complexity
The above methods provide an important method and basis for the analysis and research of radar detection range in complex mountainous environments, but there are problems such as large amount of calculation and high algorithm complexity.
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[0048] In order to verify the effectiveness of the solution of the present invention, the following simulation experiments are carried out.
[0049] The specific implementation steps of the radar detection capability analysis method in complex mountainous environment are as follows.
[0050] Input: radar deployment position P(x, y, z), azimuth angle θ, pitch angle Theoretical detection distance R, the resolution is β terrain data (DEM), the azimuth angle θ[0, 360], pitch angle And the range R of the theoretical detection distance.
[0051] Step1: Perform mixed sampling on the radar azimuth, elevation angle, and theoretical detection distance. The specific steps are as follows:
[0052] Step1.1: According to the input radar deployment position P(x, y, z) and azimuth angle θ[0, 360], calculate the radar azimuth angle sampling step size Δθ according to the formula (1) n ;
[0053] Step1.2: According to the radar input deployment position P(x, y, z), pitch angle Calculate ...
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The invention discloses a radar detection capability analysis method in a complex mountain environment. The radar detection capability analysis method comprises the steps of: reading inherent parameters of a radar, carrying out the hybrid sampling of an azimuth angle and a pitch angle of the radar according to terrain resolution, and forming an azimuth angle and pitch angle sampling data set; acquiring an unviewable point set of each azimuth profile by adopting an LOS intervisibility analysis algorithm; performing pairwise aggregation on the unviewable point sets of the adjacent profiles to form a spatial polygon point set; and carrying out spatial polygon drawing in a three-dimensional geographic information system to obtain a single-radar spatial detection range. The radar detection capability analysis method comprehensively considers the radar detection precision and calculation efficiency, determines the radar sampling data sets through adopting the hybrid sampling method, and seeks balance in two aspects of computer execution efficiency and radar detection precision.
Description
technical field [0001] The invention belongs to the technical field of radar detection, and relates to a radar detection capability analysis method in a complex mountainous environment. Background technique [0002] As an electronic device that uses electromagnetic waves to detect targets, radar is widely used in real life, and its importance in the field of national defense and military affairs is increasing day by day. When the radar detects the target, if the electromagnetic wave encounters obstacles such as mountains and high grounds during the propagation process, a detection blind area will be generated, which will directly affect the quality of the radar detection target. [3] . Therefore, the influence of complex mountain environment on radar detection performance cannot be ignored. Knowing the detection range of radar in the actual terrain environment has important practical significance for the location selection of radar and wireless communication stations in civi...
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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 任金宝张楚一胡岩峰陈诗旭周旭张文清
Owner 中国科学院电子学研究所苏州研究院
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