Maritime radio communication monitoring and direction finding system

A technology of wireless communication and direction finding system, which is applied in radio wave direction/deviation determination system, direction finder using radio wave, radio wave direction finder components, etc. Improve and other issues, to achieve the effect of purifying the electromagnetic environment, eliminating interference, compact and light structure
CN102147456BInactive Publication Date: 2012-11-21NANJING DEVING ELECTRONICS SYST
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING DEVING ELECTRONICS SYST
Publication Date
2012-11-21
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a maritime radio communication monitoring and direction finding system which is characterized by comprising a vertical polarization monitoring and direction finding antenna array, a five-channel signal switching module, an amplification module, a five-channel receiver, a digital signal processor (DSP) processing module, a computer, a monitoring and direction finding controller, a 3rd generation (3G) antenna, a radio station antenna, a 3G router, a digital broadcasting station, a switchboard, an electronic compass, a global positioning system (GSP) module and a GSP antenna. The maritime radio communication monitoring and direction finding system has the advantages that: an interfering signal can be monitored better due to the working frequencies ranging from 30 to 500MHz; simultaneous direction finding of several coherent waves is realized; simultaneous direction finding and ultrahigh-resolution digital direction finding of transmitting signals with same frequency and different directions are realized; direction finding of digital frequency hopping, a spread spectrum and a burst signal is realized; monitoring and measuring on different frequency domains, different time domains and different modulation domains can be simultaneously performed during measuring due to respective local oscillation of five channels; the problem of cross coupling among all antenna array elements is solved; the coupling and the phase ambiguity among unit antennas are removed; and dynamic application ranges of received signals are expanded.
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Description

technical field

[0001] The invention relates to a special narrowband (30MHz-500MHz) wireless communication monitoring and direction finding system on water, which belongs to the technical field of radio monitoring. Background technique

[0002] With the development of my country's shipping industry and the rapid growth of water trade, there are more and more applications of radio equipment, and the interference of the legal communication frequency used by my country's river coast stations is becoming more and more serious. At present, the radio monitoring and direction-finding systems at home and abroad are basically based on land-based platforms established in cities to monitor and find the direction of land wireless communication signals or radio and television signals. The existing domestic and foreign radio monitoring and direction-finding equipment are characterized by: The frequency coverage is wide, the system is complex, and the price is expensive; second, it is base...

Claims

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