Deception signal detection method and device based on pseudorange rate of Beidou satellite navigation system
A signal detection and navigation system technology, applied in satellite radio beacon positioning systems, measurement devices, radio wave measurement systems, etc., can solve problems such as failure of detection methods, inability to interact with real signals and spoofed signals, and spoof detection
Pending Publication Date: 2022-04-12
AIR FORCE UNIV PLA
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It mainly includes methods based on signal quality detection and tracking loop related output anomaly detection. The disadvantage is that after encountering a zero trap attack, the real signal and the spoofed signal will not be able to interact, resulting in the failure of the detection method.
The above methods mainly rely on the satellite navigation's own signal for spoofing detection. With the increasing development of spoofing technology, certain defects have been exposed.
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[0048] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0049] Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.
[0050] This examp...
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The embodiment of the invention discloses a deception signal detection method and device based on the pseudorange rate of a Beidou satellite navigation system. The method comprises the following steps: obtaining an actually measured pseudo-range rate according to a carrier phase value actually observed by a receiver, and obtaining a calibrated pseudo-range rate according to speed information provided by an inertial navigation system; differentiating the actually measured pseudo-range rate and the calibrated pseudo-range rate to obtain a statistical detection quantity; according to the statistical detection quantity, establishing detection of non-deception jamming and deception jamming, obtaining a non-deception jamming probability distribution function and a deception jamming probability distribution function, obtaining a deception signal detection threshold through the non-deception jamming probability distribution function, and obtaining an actual detection probability through the deception jamming probability distribution function; and judging whether the information received by the receiver is a deception signal or not according to the deception signal detection threshold and the actual detection probability. According to the embodiment of the invention, the test statistic is constructed by utilizing the characteristic that the speed drift of inertial navigation is not obvious in a short time, and the deception signal is effectively detected.
Description
technical field [0001] Embodiments of the present disclosure relate to the technical field of satellite navigation spoofing detection, and in particular to a method and device for detecting spoofing signals based on the pseudo-range rate of the Beidou satellite navigation system. Background technique [0002] Spoofing jamming induces the BeiDou Navigation Satellite System (BDS) to achieve wrong positioning by retransmitting or autonomously generating spoofing signals that are highly similar to real signals, causing serious harm to production and life. Therefore, it is an important means to improve navigation security to adopt effective deception detection technology based on the principle of deceptive jamming. [0003] Currently, common deception detection techniques are divided into two categories. The first category mainly detects the spoofed signal observations and finds the difference between them and the real signal. Including detection technology based on signal powe...
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Inventor 庞春雷常浩伟沈子涵刘鑫贤张良郭泽辉
Owner AIR FORCE UNIV PLA