Positioning method of plurality of same-frequency radiation sources based on field intensity

A positioning method and multi-radiation source technology, applied to satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problem that the results of radio wave direction finding are greatly affected, and achieve the effect of avoiding high costs

Active Publication Date: 2013-04-03
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

However, due to the complex geographical environment of the urban area and the high-rise buildings, the diffraction and multipath propagation of radio waves have a great impact on the traditional direction finding results, and it is difficult to meet the needs of users.

Method used

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  • Positioning method of plurality of same-frequency radiation sources based on field intensity
  • Positioning method of plurality of same-frequency radiation sources based on field intensity
  • Positioning method of plurality of same-frequency radiation sources based on field intensity

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] see figure 1 The structural block diagram of the vehicle-mounted mobile electromagnetic spectrum monitoring system shown, the vehicle-mounted mobile electromagnetic spectrum monitoring system includes a mobile platform (which can be a car, a mobile carrier), an omnidirectional antenna, a spectrum analyzer, a GPS receiver and a computer (installed in the computer) There is the same-frequency multi-radiation source positioning strategy TPDW, which is obtained by software programming), the omnidirectional antenna is installed above the casing of the mobile platform, and the spectrum analyzer, GPS receiver and computer are installed in the casing of the mobile platform.

[0020] The omnidirectional antenna is used to convert the 30MHz-1GHz electric wave in the electromagnetic environment into high-frequency current A in real time and output it to the spect...

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Abstract

The invention discloses a positioning method of a plurality of same-frequency radiation sources based on field intensity, which belongs to the field of spectrum management. The method is based on the field intensity of a certain frequency channel measured by a vehicle-mounted omnidirectional antenna and longitude and latitude data measured by a GPS (Global Position System). The field intensity data are arrayed according to the measurement sequence, wavelet multi-resolution analysis is used to remove the noise caused by fast fading in the field intensity; and then latitude / longitude coordinates corresponding to the maximum value point are found out; the maximum value point is divided into different areas by a clustering algorithm; and at last, each estimated source point in the area and useable detected points in the area are calculated by an Egli model formula to obtain an absolute mean of difference array elements, so that the position of the source point in the area is determined. The positioning method disclosed by the invention is the positioning under a passive direction finding condition, the reliability is rather high, and the positioning method has a wide practical value and application prospect in the field of the spectrum management.

Description

technical field [0001] The invention belongs to the technical field of radio monitoring, more particularly, it is a positioning method for positioning multiple radiation sources by using non-directional field strength values ​​and corresponding latitude and longitude coordinate data, which effectively solves the problem of multipath effects and fast fading. adverse effects. Background technique [0002] With the recent rapid development of communication technology and the deteriorating electromagnetic environment, how to effectively monitor and control various radiation sources is an urgent problem to be solved by the electromagnetic environment monitoring department. The prerequisite for effective monitoring of the radiation source is to determine the exact location of the radiation source. At present, the main method to realize the location of the radiation source is to realize the cross-location by measuring the direction of the radiation signal. However, due to the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/46
Inventor 谢树果叶知秋李圆圆王磊苏东林陈少刚
Owner BEIHANG UNIV
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