Detection method for GPS antenna malicious shielding
A technology of a GPS antenna and a detection method, applied in the field of GPS positioning, can solve the problems of inability to locate normally, reduce GPS satellite signals, and paralyze GPS terminals, and achieve the effect of real-time monitoring of vehicle operation and preventing malicious damage by others.
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[0022] The present invention will now be further described in conjunction with specific embodiments.
[0023] The technical scheme of the present invention is to use a combination of hardware circuits and software algorithms to comprehensively and effectively detect whether the GPS antenna is maliciously shielded. First, a set of invisible light transmitters and receivers are used to detect whether there are opaque obstructions above the GPS antenna; at the same time, a metal proximity sensor is used to detect whether there are additional metal objects near the GPS antenna; the software uses a Set SNR value comparison algorithm to confirm whether GPS is not positioning due to malicious interference or shielding of GPS satellite signals.
[0024] In order to improve the detection effect and ensure that there is no misjudgment, this mechanism adopts a combination of two hardware circuit detection and a set of software algorithm judgment. The three rely on each other and restrict each...
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