Multi-base-station target heading inversion method based on GNSS forward scattering properties
A technology of forward scattering and multi-base stations, applied in the field of target heading detection, can solve problems such as inability to invert the target heading, and achieve good engineering application value and good applicability
Active Publication Date: 2019-01-25
金华航大北斗应用技术有限公司
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[0004] The purpose of the present invention is to provide a multi-base station target heading inversion method based on GNSS forward scattering characteristics, using the detection mode of multiple base stations, using GNSS forward scattering characteristics to complete the monitoring of the target heading, and solving the traditional single base station detection mode In this case, the problem of inversion of the target heading cannot be performed; combined with the GNSS satellite sky map, the azimuth and altitude angle information of the GNSS satellite at the time when the target passes through the detection area of the ground base station is extracted; at the same time, the GNSS signals received by each base station are processed. If The satellite signal changes significantly, and it is marked; by calculating the start time and end time of the base station where the GNSS satellite signal amplitude changes significantly, the course of the target is judged
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the invention.
[0027] according to figure 1 As shown, multiple base stations are deployed on the ground, marked and processed, and GNSS satellite signals are collected in real time.
[0028] according to figure 1 As shown, when the target passes through the detection area of multiple base stations, the GNSS satellite signal data collected by each base station is captured and tracked, and the amplitude of the satellites that can be tracked is calculated.
[0029]
[0030] Among them, Mag GNSS is the amplitude of the GNSS satellite signal, I P is the in-phase signal of the tracking loop, Q P is the quadrature signal of the tracking loop, I ...
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The invention discloses a multi-base-station target heading inversion method based on GNSS forward scattering properties. The multi-base-station target heading inversion method comprises the steps of:utilizing the GNSS forward scattering properties to complete monitoring of a target heading, and solving the problem that the target heading cannot be inverted in a traditional single-base-station detection mode; combining a GNSS satellite stellar map, and extracting azimuth angle and elevation angle information of a GNSS satellites at the moment when a target passes a ground base station detection region; meanwhile, processing a GNSS signal received by means of each base station, and marking the GNSS signal if the satellite signal changes obviously; and judging the heading of the target through calculating a starting moment and an end moment of the base station with GNSS satellite signal amplitude changed obviously. The multi-base-station target heading inversion method can extract real-time position information of the GNSS satellite by means of a navigation message or relevant navigation software, does not need to establish a database of a signal source in advance, and has the advantages of being convenient and precise.
Description
technical field [0001] The invention relates to the technical field of target course detection, in particular to a multi-base station target course inversion method based on GNSS forward scattering characteristics. Background technique [0002] The target detection technology based on GNSS (Global Navigation Satellite System) forward scattering characteristics has the following advantages: 1. The system itself does not emit electromagnetic wave signals, but uses non-cooperative GNSS satellites as radiation sources, which is not easily perceived by the enemy and has strong Excellent survivability and concealment; 2. Excellent working performance, it can work continuously around the clock and day and night. 3. When the target passes near the connection between the GNSS satellite and the base station, its own RCS increases rapidly, and the GNSS signal received by the base station also changes significantly, which has better anti-stealth capabilities than traditional radars; 4. ...
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IPC IPC(8): G01S19/14G01C1/00
CPCG01C1/00G01S19/14
Inventor 朱云龙王博其他发明人请求不公开姓名
Owner 金华航大北斗应用技术有限公司