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Method and device for correcting array antenna beam pointing error of regional multiple point microwave system

An array antenna and beam pointing technology, which is applied in the field of beam pointing error correction and device of an array antenna of a regional multi-point microwave system, can solve the problems of unsatisfactory convergence speed, transient response affecting communication quality, and beam pointing error being too large.

Inactive Publication Date: 2003-11-26
FAR EASTONE TELECOMM
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Problems solved by technology

If the estimated DOA value is directly used to directly correct the beam pointing error, the beam pointing error is too large; or the recursive least square (RLS) adaptive filter is used to estimate the DOA value Beam pointing error correction angle, the error of its instantaneous response is too large will affect the communication quality, its convergence speed and beam pointing error convergence value are not yet able to meet the needs of the LMDS system to correct the antenna beam pointing error in real time and accurately

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  • Method and device for correcting array antenna beam pointing error of regional multiple point microwave system
  • Method and device for correcting array antenna beam pointing error of regional multiple point microwave system
  • Method and device for correcting array antenna beam pointing error of regional multiple point microwave system

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[0023] figure 1 Shown is a block diagram of the function of the LMDS system array antenna beam pointing error automatic correction processing device proposed by the present invention, wherein the gray shaded area on the left is the FBFN beam pointing error correction processing device 1 disclosed by the present invention, and 2 represents the array Antenna, 3 represents a beamforming circuit, 4 represents a DOA estimation device. Its signal flow is as follows figure 2 As shown, the base station (not shown) signal is received by the multi-beam array antenna 2 at the LMDS user end (not shown) (step S1), and through the beamforming circuit 3, four beam signals with different strengths are generated in the horizontal direction ( Step S2), select the strongest adjacent two beam signals (step S3) to subtract and generate direction finding estimation (DOA) angle (step S4), and the estimated angle is sent into the FBFN beam pointing error proposed by the present invention The corre...

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Abstract

This invention provides a FBFN fuzzy process method and its device for automatically rectifying beam pointing errors, among which the device prescribes the rectified volume of the erroneous angle according to the antenna beam pointing error distribution correspondingly produced by the wind intensity distribution, and the said device is allocated in LMDS system end users having the function of automatically rectifying beam pointing error of the multibeam array antenna caused by the wind, the device measures the base station signal direction influenced by the wind on multibeam array antenna, and then predetermines the rectified angle by 13 base functions and regular fuzzy base function network beam pointing error rectifying algorism to control the array antenna.

Description

technical field [0001] The present invention relates to a beam pointing error automatic correction processing method and device for an array antenna of a local multipoint distributed system (LMDS) (Local multipoint distributed system, LMDS). The regression function designed based on the resulting distribution of beam pointing error is used to correct the angle of beam pointing error. Under the LMDS system configuration, this device can automatically align the main beam of the multi-beam array antenna to the base station (HUB), and immediately improve the communication quality of the LMDS system in bad weather conditions (such as strong wind). The beam pointing error correction processing device uses the Direction of Arrival (DOA) signal measured by the multi-beam array antenna to find the source direction of the base station signal under the influence of wind, and then passes the fuzzy basis function network (Fuzzy Basis Function Network, FBFN) The beam pointing error correct...

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Application Information

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IPC IPC(8): H01Q3/00
Inventor 马杰罗罗兴
Owner FAR EASTONE TELECOMM
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