Multi-channel radio monitoring and correlation interference direction-finding fixed station system
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A technology of radio monitoring and related interference, which is applied in the direction of radio/inductive link selection and arrangement, transmission system, and communication channel monitoring, etc. Problems such as low precision, to achieve the effect of expanding the dynamic application range, good sensitivity, and high system precision
Inactive Publication Date: 2008-06-18
俞文蕴
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However, due to the poor ability of this method to withstand the influence of the surrounding harsh electromagnetic environment, there are often phenomena such as inaccurate signal azimuth judgment, low direction finding accuracy, poor sensitivity, slow direction finding speed, and susceptibility to interference.
With the deepening of radio spectrum management, early monitoring equipment and monitoring technology can no longer meet the requirements of the development of the times
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[0015] Control attached figure 1 , its structure includes a large-based vertical polarization interferometer direction-finding antenna array 1, high and low-end electric rotary switches 2, power divider 3, first antenna selector 4, three-function RF amplifier 5, and a dual-channel direction-finding receiver 6. Digital intermediate frequency phase detector 7, monitoring direction finding processing unit 8, industrial control computer 9, low-end vertical polarization monitoring antenna 10, high-end vertical polarization monitoring antenna 11, second antenna selector 12, monitoring receiver 13, Battery pack or mains 14, UPS 15, environmental monitoring and remote control power supply unit 16, hub 17, network 18.
[0016] The connection relationship between them: large-scale vertical polarization interferometer direction-finding antenna array 1, high and low-end electric rotary switch 2, first antenna selector 4, three-function RF amplifier 5, dual-channel direction-finding receiv...
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Abstract
The invention relates to a multi signal channel wireless detection and relative interference direction detecting fixed station system. Wherein, it comprises a vertical polarized basic interferometer direction detecting antenna array, high-low electric screw switches, power distributor, the first antenna selector, three-function RF amplifier, dual-signal channel direction detecting receiver, digit middle-frequency phase detector, detecting direction detection processing unit, industrial control computer, low vertical polarizing detecting antenna, high vertical polarizing detecting antenna, the second antenna selector, detecting receiver, accumulator, UPS, environment detecting and remote-control power supply, concentrator, and network. The invention has the advantages that: one couple antenna units sample at the same time, to confirm synchronization, quick speed, and accuracy; and the amplifier has three functions as amplifying, directly through, and decreasing, which can be switched automatically, to expand the dynamic application range of receive signal, to avoid jam when receiving strong signal; and the detection and direction detection can be processed at the same time, with high direction detecting speed. The inventive system has high accuracy, sensitivity, speed, stability and reliability.
Description
technical field [0001] The invention relates to a multi-channel radio monitoring and related interference direction finding fixed station system, and belongs to the technical field of array signal digital processing direction finding in communication technology. Background technique [0002] The early monitoring and direction-finding system used the ratio-amplitude direction-finding system, which judged the direction of the signal by comparing the signal amplitudes received by each unit antenna on the antenna array. However, due to the poor ability to withstand the influence of the surrounding harsh electromagnetic environment, this method often has inaccurate signal azimuth judgment, low direction finding accuracy, poor sensitivity, slow direction finding speed, and is susceptible to interference. With the deepening of radio frequency spectrum management, early monitoring equipment and monitoring technology can no longer meet the requirements of the development of the times...
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