A signal generation method and wired test system for realizing preset trajectory deception

Abstract

The invention discloses a signal generating method for achieving preset track deception and provides a deception jamming wired test system. According to the method, by utilizing a true satellite position observed by a receiver at a t moment and the true position of the receiver, a deceiving side can simulate and generate M branches of deception signals through a preset deception track, the M branches of deception signals and a true satellite participate in localization calculation of the receiver simultaneously, and a location result is obtained. By means of the method, the multiple branches of deception signals different from a PRN code of the true satellite can be generated, and a great deception effect can be achieved by only a few branches of deception signals. The deception jamming wired test system can generate N branches of true signals and the M branches of deception signals by setting a true movement track and the deception track of an object, after combining the N branches of true signals and the M branches of deception signals, the deception jamming wired test system transmits the combined signals to a GNSS receiver, and the deception jamming effect can be judged by comparing the location result output by the receiver with the preset deception track in real time. The system is simple in equipment, and the operation process is easy.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a method for generating and testing spoofing interference signals in the field of satellite navigation, and in particular to a signal mathematical simulation and wired testing method for preset trajectory spoofing. Background technique [0002] Global Navigation Satellite System (GNSS) generally consists of a space constellation part, a ground monitoring part and a user equipment part. Each GNSS satellite in the space constellation part continuously transmits navigation service signals to the ground; the ground monitoring part obtains the orbit information of the satellite through measurement and uploads it to the GNSS satellite; the user equipment part processes signals from multiple visible satellites to determine own spatial location information. [0003] Since the current navigation receiver completely trusts the received GNSS signal, any organization or individ...

AI Technical Summary

Problems solved by technology

In addition, in order to achieve the deception effect of these two methods, the target receiver must be completely blocked from receiving the real satellite signal, so that the receiver is completely locked to the spoofing signal. Generally, it is quite difficult for the receiver to completely lose the real signal.

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