GNSS deception jamming radiation source positioning method based on AOA/TDOA
A technology of spoofing interference and positioning methods, applied in the field of satellite navigation, can solve problems such as low radiation power, small interference area, and decreased positioning performance of positioning systems, and achieve the effect of easy implementation and small amount of calculation
Pending Publication Date: 2021-11-12
湖南天熠电子科技有限公司
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Problems solved by technology
This method requires at least four receiving stations to realize the three-dimensional positioning of the spoofing interference radiation source; in addition, since the radiation power of spoofing interference is generally low, its interference area is also small. Within , the receiving station will not be able to obtain the measurement information of the radiation source, which will lead to a decrease in the positioning performance of the positioning system
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[0040] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but this does not constitute a limitation of the present invention.
[0041] see figure 1 As shown, a kind of AOA / TDOA-based GNSS spoofing interference radiation source positioning method in this embodiment includes the following steps:
[0042] S1: Collect AOA / TDOA measurement values and receiving station location information.
[0043] Specifically, AOA measurement values and TDOA measurement values of all receiving stations at the same time are collected, as well as location parameters of the receiving stations. Denote the position of the unknown spoofing interference radiation source as u o =[x o ,y o ,z o ] T ; There are M GNSS receiving stations participating in positioning, and the real position of the i-th receiving station is recorded as: record parting is the true value of the azimuth and elevation angles of the i-th rec...
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The invention discloses a GNSS deception jamming radiation source positioning method based on AOA / TDOA, and the method comprises the following steps: S1, collecting the AOA measurement values and TDOA measurement values of all receiving stations at the same moment, and the position parameters of the receiving stations; s2, calculating a rough estimation result of the position of a radiation source; and S3, estimating the accurate position of a deception interference radiation source. According to the GNSS deception jamming radiation source positioning method based on the AOA / TDOA, the whole radiation source position solving process is an analytic solution in a closed form, and the calculated amount is small; in addition, according to the method, as long as the number of the receiving stations is not less than 2, the radiation source can be positioned, and the method is convenient to implement in engineering application.
Description
technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a GNSS (Global Navigation Satellite System) spoofing interference radiation source positioning method based on signal angle of arrival AOA (Angle of Arrive) and time difference of arrival TDOA (Time Difference of Arrive) measurement values. Background technique [0002] The current satellite navigation system has been widely used in all aspects of national life. However, due to the weak GNSS signal reaching the ground, it is easily jammed. Among them, spoofing jamming can control the target system by controlling the target receiver to output false position and time results, so it is the most harmful. The current anti-spoofing methods mainly focus on the detection of spoofing interference, which can only serve as a warning, and the receiver still cannot work normally; if the source of interference radiation can be located and then destroyed, the influence of spoofing...
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CPCG01S19/21
Inventor 唐凯
Owner 湖南天熠电子科技有限公司