Methods of Obtaining Spatial Electromagnetic Intensity Data
A space and strength technology, applied in the field of space electromagnetic situational awareness, can solve the problems such as the inability of the aircraft to avoid in time, the operation speed is slow, and the electronic equipment cannot work normally, so as to save the operation time, reduce the burden, and improve the operation rate.
Inactive Publication Date: 2016-07-06
XIDIAN UNIV
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Problems solved by technology
This method needs to perform a spectral transformation calculation with a large amount of calculation at each observation point. In the case of a large number of observation points, the calculation speed is very slow, which will cause the electronic equipment to fail to work normally or the aircraft to avoid interference in time.
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[0036] refer to figure 1 , the concrete steps of the present invention are as follows:
[0037] Step 1: Determine the number and related parameters of radar transmitters and communication transmitters.
[0038] Place M radar transmitters and N communication transmitters in the space, where M≥1, N≥1, and the power of the radar transmitter is: P rm >0, the antenna gain of the radar transmitter is: G rm >0, the power of the communication transmitter is: P cn >0, the antenna gain of the communication transmitter is: G cn >0, the transmission signal of the radar transmitter is s rm (t), the transmission signal of the communication transmitter is s cn (t), where m represents the serial number of the radar transmitter, m=1,2,...,M, n represents the serial number of the communication transmitter, n=1,2,...,N.
[0039] Step 2: Calculate the sampling frequency f of the radar transmitted signal r and the number of sampling points K r .
[0040] 2a) Calculate the sampling frequen...
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The invention discloses a method for obtaining space electromagnetic intensity data. The main problems that electronic equipment can not work normally, or target interference is high because in the prior art, calculation speed is low are solved. The method includes the steps that (1), the number and parameters of radar transmitters and communication transmitters are determined, and sampling frequencies and the sampling number of the radar transmitters and the communication transmitters are respectively calculated; (2), radar signals and communication signals are sampled respectively, and Fourier transformation is performed on the sampled signals to obtain a corresponding signal frequency spectrum; (3), an observation point is set; (4), a radar signal superposition frequency spectrum and a communication signal superposition frequency spectrum of the observation point are obtained through calculating the signal frequency spectrum; (5), according to the superposition frequency spectra, signal total power is calculated, so that electromagnetic intensity is obtained; (6), step3, step4 and step5 are repeated for a whole observation area, so that electromagnetic intensity data of the observation area are obtained. The calculation amount is reduced substantially, responding speed of the electronic equipment is increased, and the method can be used for analyzing the electromagnetic environment and avoiding mutual interference of kinds of electronic equipment.
Description
technical field [0001] The invention belongs to space electromagnetic situation awareness technology, and in particular relates to a method for acquiring space electromagnetic intensity data. It can be used to analyze the electromagnetic environment and avoid mutual interference of various electromagnetic devices. Background technique [0002] With the development of informatization, there are more and more electromagnetic devices in the real environment, resulting in an extremely complex electromagnetic environment. How to obtain the power in the electromagnetic environment and electromagnetic intensity data are of great value to the study of the electromagnetic environment: First, it helps to avoid various Mutual interference between electromagnetic equipment; second, it can guide civil aviation aircraft to avoid strong electromagnetic interference during movement, so that they can take off and land safely. [0003] The traditional method of obtaining space electromagneti...
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IPC IPC(8): G01R29/08
Inventor 蔡晶晶李鹏武斌刘高高秦国栋鲍丹冯小平张银平李瑞玲张葵
Owner XIDIAN UNIV