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Reconnaissance and interference integrated system

A technology of interference transmission and signal interference, applied in the direction of communication interference, electrical components, etc., can solve the problems of complex structure of transmitting and receiving channels, high sampling rate, etc., and achieve the effect of reducing the number of channels and data rate requirements, and reducing power consumption

Active Publication Date: 2020-08-21
HARBIN ENG UNIV
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Problems solved by technology

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a method that can reduce the sampling rate, simplify the transmission and reception channel structure, realize simultaneous interference of multiple frequency bands and multiple signals, reduce the data rate of signal sampling, and realize the detection of large bandwidth signals. An integrated reconnaissance and jamming system with MWC structure is used to overcome the defects of high sampling rate and complex structure of transmitting and receiving channels in the existing technology

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specific Embodiment approach

[0083] A specific implementation of the integrated system for reconnaissance and jamming using the MWC structure of the present invention includes:

[0084] (1) Multiplexing and multiplexing reception. Through the front-end analog channelization structure, the detection spectrum Ω is divided into J subbands with the same bandwidth and the bandwidth is W, and the signal of each subband is down-converted into a baseband signal, and then the baseband signal is combined with the periodic pseudo-random The sequences are mixed and summed to obtain a compressed signal.

[0085] (2) Compressed signal interference generation. The compressed signal is sampled by an analog-to-digital conversion chip (ADC) to obtain a compressed sampling signal, and then the compressed sampling signal is added to interference to obtain an interference signal.

[0086] (3) Multi-channel random unmixing. The interference signal is mixed with the periodic pseudo-random sequence to obtain the interference ...

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Abstract

The invention discloses a reconnaissance and interference integrated system, and a method comprises the following steps: dividing a received signal into sub-bands through a front-end analog channelization structure, performing down-conversion processing to obtain a baseband signal, mixing the baseband signal with a frequency mixing sequence, and performing summing to obtain a summed signal, so that the data volume is greatly reduced, and the sampling data rate is reduced; enabling the summed signal to be subjected to interference of a specified interference pattern to obtain an interference signal, so that the interference bandwidth is reduced, and the interference can still cover the full frequency band of the reconnaissance signal; mixing the interference signal with the periodic mixingsequence to obtain an interference mixing signal; performing up-conversion processing on the interference mixing signal to obtain an interference modulation signal, so the frequency spectrum of the interference signal is shifted to each sub-band; enabling the interference modulation signal to pass through a filter bank and performing summing to obtain a final interference signal. Compared with a traditional reconnaissance receiver and a jammer, the system can reduce the sampling rate, simplify the transmitting and receiving channel structure and achieve multi-band multi-signal simultaneous interference.

Description

technical field [0001] The invention belongs to the technical field of electronic countermeasures, and relates to an integrated reconnaissance and jamming system, in particular to an integrated reconnaissance and jamming system adopting an MWC structure. Background technique [0002] Most of the current radar reconnaissance and jamming technologies adopt a large-bandwidth reconnaissance and jamming method that covers the entire frequency band of the radar signal. Among them, radar jamming technology is divided into two types, including suppressive jamming and deceptive jamming. The radar reconnaissance and the above-mentioned interference methods require the receiver and the jammer to work in a large bandwidth, which requires the system to use high-speed AD sampling and high-speed DA conversion, or use a complex channel structure to achieve broadband reconnaissance and interference. There are defects such as high sampling rate and complex structure of transmitting and recei...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00
CPCH04K3/22Y02D30/70
Inventor 陈涛高佳旭郭沐然雷宇
Owner HARBIN ENG UNIV
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