A field strength location method for multiple radiation sources at the same frequency based on compressive sensing
A technology of compressed sensing and multi-radiation sources, applied in network traffic/resource management, transmission monitoring, electrical components, etc., can solve problems such as complex equipment and impact, and achieve the effect of simple equipment and improved accuracy
Active Publication Date: 2020-03-10
BEIHANG UNIV
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These methods all use antenna arrays to receive signals, and the equipment is complex and the number of radiation sources that can be located is affected by the number of antennas in the antenna array
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[0028] In order to better illustrate the purpose and advantages of the present invention, the method will be further described in detail below in conjunction with the drawings and simulations.
[0029] Radiation source location is an important content of radio monitoring management. A field strength positioning method of multiple radiation sources at the same frequency based on compressed sensing in the present invention uses the field strength data of mobile monitoring to first divide the received field strength sequence, and uses compressed sensing technology to process the divided data, which can be more accurate To locate multiple unknown radiation sources of the same frequency. Then, the Egli propagation model is used for secondary positioning to determine the position of the radiation source, which improves the accuracy of positioning. It provides a new positioning method for the management of the electromagnetic spectrum, and effectively improves the accuracy of field ...
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The invention relates to a field intensity positioning method for multiple same-frequency radiation sources based on compressed sensing, which comprises the steps coarse positioning and secondary positioning, and is characterized in that uniform grid partition is performed in a target area according to a compressed sensing technology in coarse positioning, clustering processing is performed on received field intensity values according to grid partition conditions to obtain a grid field intensity sequence, a matrix is constructed according to a received field intensity formula in the target area, a space sparse vector is obtained according to the matrix through a reconstruction method, and the matrix is solved to obtain the target number of the radiation sources; and the target number of the radiation sources and the grid field intensity value sequence are enabled to act as known quantities in secondary positioning, secondary positioning solving is performed according to a genetic algorithm by using an Egli model, and finally the number of the same-frequency radiation sources can be accurately positioned. According to the invention, the number of a plurality of unknown radio same-frequency radiation sources can be accurately estimated and positioned, and the positioning accuracy is improved.
Description
technical field [0001] The invention relates to a method for locating the field strength of multiple radiation sources at the same frequency based on compressed sensing, and belongs to the fields of electromagnetic detection, passive locating, and radio monitoring and management. Background technique [0002] At present, the passive positioning method of radiation source is mainly to carry out cross positioning through azimuth lines measured by multiple fixed stations. This method is prone to inaccuracy due to interference from complex electromagnetic environment factors such as multipath and shadows in cities, and for some situations where low radiation power and high-density spectrum are used, it cannot be effectively monitored at a distance from the monitoring station. In addition, with the rapid development of the modern electronic industry and the telecommunication industry and the popularization of electrical products, there are more and more electronic, electrical, co...
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IPC IPC(8): H04W28/06H04W64/00H04B17/318H04B17/391
Inventor 谢树果左铭谷晓鹏朱谊龙
Owner BEIHANG UNIV