Pointing deviation correction method for satellite navigation digital multi-beam launching array antenna
A digital multi-beam, transmitting array technology, applied in satellite radio beacon positioning systems, surveying and navigation, antenna radiation patterns and other directions, can solve problems such as beam scanning pointing error, unit antenna installation error, amplitude and phase error, etc.
Active Publication Date: 2014-11-05
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology
The errors that affect the beam pointing accuracy mainly include unit antenna installation errors, amplitude and phase errors between unit antennas, channel consistency calibration errors, and quantization errors in beamforming processing. The combined effects of these factors cause errors in beam scanning pointing
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[0080] Below in conjunction with specific embodiment and accompanying drawing, the present invention will be further described:
[0081] The test system block diagram of the present invention is as figure 1 As shown, the digital multi-beam transmitting array antenna is installed on the test turntable, and the turntable control equipment controls the turntable to complete the rotation of azimuth, pitch and polarization direction. The beacon antenna is installed on a distant beacon tower, and the distance between the beacon antenna and the array antenna meets the far-field test conditions. The signal received by the beacon antenna is connected to the spectrum analyzer in the computer room through the radio frequency cable for data analysis and collection, and the data is transmitted to the control and information processing system through the network for storage. The control and information processing system mainly completes the tasks of issuing turntable control commands, beam...
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The invention relates to a pointing deviation correction method for a satellite navigation digital multi-beam launching array antenna. A relation between a set beam pointing and a to-be-measured-beam pointing is obtained by measuring the beam pointing in launching array antenna action airspace, the pointing deviation of a launching beam is corrected by utilizing a method of table-look-up to achieve the purpose of accurately pointing and tracking a target. According to the pointing deviation correction method for the satellite navigation digital multi-beam launching array antenna, the process of building a complex mathematical model to analyze error components which affect the beam pointing is avoided. The pointing deviation correction method for the satellite navigation digital multi-beam launching array antenna has the advantages of being novel and simple, and strong in practical applicability, and especially suitable for application of specific engineering.
Description
technical field [0001] The invention relates to a method for correcting the pointing deviation of a digital multi-beam transmitting array antenna for satellite navigation. The relationship between the set beam pointing and the measured beam pointing is obtained by testing the beam pointing in the action space of the transmitting array antenna, and using the look-up table The method corrects the pointing deviation of the transmitting beam, so as to achieve the purpose of precise pointing and tracking of the target. Background technique [0002] Digital array antenna has been widely used in radar, communication, satellite navigation and other fields due to its advantages of flexible and controllable beam. Beam pointing accuracy is an important indicator of the digital array antenna. This indicator is used to measure the error between the direction of the beam formed by the digital array antenna and the target direction, and directly determines the tracking, measurement, and po...
Claims
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IPC IPC(8): G01S19/38G01R29/10G01C1/00
Inventor 蔚保国尹继凯翟江鹏魏海涛李刚王跃
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP