Repeater deception type GPS (Global Position System) jamming system and jamming method thereof

Abstract

The invention discloses a repeater deception type jamming system and a jamming method thereof. The repeater deception type jamming system comprises reconnaissance receivers, a digital analog converter, a frequency converter, a combiner, a power amplifier, a transmission system, a jammer delayer and a jamming transmitter, wherein the frequency converter comprises an up-converter and a down converter; the combiner comprises an upper combiner and a lower combiner; eight reconnaissance receivers are provided, and each reconnaissance receiver comprises a large-diameter reflector antenna and an automatic tracking system; the transmission system adopts a wire transmission mode or a wireless transmission mode; the jammer delayer is a fixed tapped delayer with a plurality of tap positions, and a delay array is composed by a CPLD (Complex Programmable Logic Device) for each jammer delayer. The repeater deception type jamming system and the jamming method have the advantages that the jammer is small in interference emission size and light in weight, the large-diameter reflector antennas are adopted to obtain the high gain, the carrier to noise ratio of a GPS signal is improved, despreading is not needed, a sending part and a receiving part are insulated and connected by the transmission system, the insulation difficulty of the sending and the receiving is avoided, the remote transmission effect is also achieved, and a far effective jamming distance can be realized.

Description

technical field [0001] The invention relates to the field of GPS satellite navigation, in particular to a forwarding deception GPS interference system and an interference method thereof. Background technique [0002] In modern warfare, global positioning system, satellite surveillance, optical fiber communication, Internet, high-sensitivity sensors, precision-guided weapons and other information technology means have flooded the entire battlefield, and the role of navigation cannot be ignored. GPS is currently the most widely used satellite navigation GPS positioning has the characteristics of all-weather and high precision, and it is widely used in military and civilian fields. GPS will become the key to precise command and control, precise strike and precise force projection of the enemy and its allies. For a long time they have adopted a policy of containment and weakening of our country. Therefore, maximizing the navigation capabilities of their own troops and maximizing...

AI Technical Summary

Problems solved by technology

Some jamming systems are also forwarding jamming, that is, they first receive the GPS signal from the satellite, and then amplify the signal and then transmit it to the target airspace. In this way, if the receiver in the target airspace receives the forwarding jamming signal, the distance measurement will no longer be a visual signal. If the distance is too large, it will cause the receiver positioning error

Although this is also a deceptive interference, the receiver may receive the actual signal first, and may also receive the interference signal. The interference success rate of this method cannot be guaranteed

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