Satellite navigation deception interference suppression method based on deception interference DOA estimation
A deceptive jamming and satellite navigation technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problems of scenes that cannot be applied to multiple spoofing sources, complex structures, and large calculations, so as to suppress spoofing Type interference, small amount of calculation, simple effect
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[0017] The satellite navigation deceitful interference suppression method based on deceptive interference DOA estimation provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. For convenience, the following uses the GPS (Global Positioning System) system and an equidistant linear array composed of N array elements as an example to illustrate.
[0018] like Figure 4 As shown, the satellite navigation spoofed interference suppression method based on spoofed interference DOA estimation provided by the present invention comprises the following steps carried out in order:
[0019] (1) Down-convert the radio frequency signal received by the array antenna into a digital intermediate frequency signal:
[0020] The forwarding deceptive jamming is composed of multiple real satellite signal forwarding signals (pseudo-satellite signals) and is transmitted in the same direction. In order to effectively int...
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