Method for generating GPS (Global Positioning System) spurious Doppler sweep jamming signal

Abstract

The invention discloses a method for generating a GPS (Global Positioning System) spurious Doppler sweep jamming signal, comprising the following steps of: step 1, generating jamming signal base-band digital-waveform data; step 2, transmitting the jamming signal base-band digital-waveform data to the storage unit of a GPS interferometer according to a serial communication protocol; and step 3, controlling the GPS interferometer to transmit a jamming signal by a universal PC (Personal Computer). The method employs random waveform generation technique; the digital waveform of the jamming signal is generated through the PC, so that the pattern of the jamming signal can be generated conveniently and the related parameters of the waveform of the jamming signal can be accurately controlled; the method is capable of generating the spurious Doppler sweep jamming signal which is capable of forming pseudo-spurious jamming at low signal power to a GPS receiver employing common tracking technique; and the method is suitable for detecting the anti-jamming capability of the GPS receiver, is digitally integrated, and is simple in proposal, low in cost, powerful in function and convenient to use.

Description

technical field [0001] The invention relates to a method for generating a GPS false Doppler sweep interference signal, which belongs to the performance detection technology of a GPS receiver. Background technique [0002] GPS has penetrated into all aspects of the modern military and national economy, and has become an assignment system that provides position, velocity, and time (PVT) references. A huge industry has formed around GPS and its applications. Because the GPS reaching the ground is extremely weak, the GPS receiver is susceptible to interference from intentional or unintentional signals, so the anti-jamming performance of the GPS receiver is an important indicator for evaluating the performance of the GPS receiver. Co-tracking technology is a GPS receiver technology used to better track satellites and maintain observation accuracy. While tracking individual satellite carrier signals, it also uses all satellite signals received to track the dynamics of the receiver...

AI Technical Summary

Problems solved by technology

At present, ordinary GPS jammers can generate common GPS jamming signals such as single-tone jamming, narrowband noise jamming, and broadband noise jamming. The disadvantage is that they cannot generate jamming patterns specifically for GPS receivers that use common tracking technology, and cannot evaluate their anti-jamming performance. valid inspection

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