System and method of correcting satellite navigation anti-interference array antenna inconsistency
An array antenna and satellite navigation technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve problems such as antenna pattern inconsistency, antenna interference signal loss of anti-interference, pattern distortion, etc. Achieve good anti-interference effect
Inactive Publication Date: 2016-08-24
XIDIAN UNIV +1
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Problems solved by technology
In this case, due to the different directions in which the antenna units are placed and the different influences of the carrier on each antenna, the distortion of the pattern is caused, resulting in serious inconsistencies in the pattern of the antenna.
In terms of hardware implementation, the inconsistency of the antenna will cause the anti-jamming processing algorithm to lose the anti-jamming effect on the jamming signals incident in certain angle domains
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[0023] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] see figure 1 , a satellite navigation anti-jamming array antenna inconsistency correction system, comprising an antenna 1, a fixed gain radio frequency channel, a variable gain amplifier 8, a filter 9, an intermediate frequency signal acquisition and digital signal processing module 10 and a gain control module 13, said An antenna 1, a fixed gain radio frequency channel, a variable gain amplifier 8, a filter 9, an intermediate frequency signal acquisition and digital signal processing module 10, and a gain control module 13 are connected in sequence.
[0025] figure 2 , image 3 They are respectively the principle block diagram of intermediate frequency correction and the principle block diagram of radio frequency correction of satellite navigation anti-jamming array antenna inconsistency according ...
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The invention discloses a system and a method of correcting satellite navigation anti-interference array antenna inconsistency. The system comprises an antenna, a fixed gain radio frequency channel, a variable gain amplifier, a filter, an intermediate frequency signal acquisition and digital signal processing module and a gain control module, wherein the antenna, the fixed gain radio frequency channel, the variable gain amplifier, the filter, the intermediate frequency signal acquisition and digital signal processing module and the gain control module are sequentially connected. The system and the method of the invention can be used in design such as a satellite navigation conformal array anti-interference system and a satellite navigation heterogeneous array anti-interference system, and a conformal array and a heterogeneous array which generally cannot normally exert anti-interference effects can acquire good anti-interference effects.
Description
technical field [0001] The invention belongs to the technical field of adaptive column antennas, and relates to a satellite navigation anti-jamming array antenna inconsistency correction system and method. Background technique [0002] On the ground and in the air, satellite navigation signals are very weak, and a small amount of electromagnetic radiation of the same frequency can affect the receiving performance of satellite navigation receivers. Therefore, satellite navigation receivers are extremely vulnerable to malicious jamming and other signals from the enemy. In order to solve the interference problem of the satellite navigation receiver, it is the main means to use array signal processing to weaken the interference signal. In the design of the usual satellite navigation anti-jamming array, the antennas are designed separately and distributed on a planar conductor at a distance close to half the working wavelength. For the antenna array in this way, the pattern of ...
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IPC IPC(8): G01S19/21
CPCG01S19/21
Inventor 黄丘林陈浩刘振兴王新怀史小卫
Owner XIDIAN UNIV