Method for calibrating satellite navigation digital multi-beam launching array antenna phase center

A digital multi-beam, transmitting array technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve the problem of array antenna deviation, antenna processing and installation errors, unit antenna amplitude and phase consistency, unit antenna mutual coupling function and other problems, to achieve the effect of high measurement accuracy, avoiding the need for expensive test instruments and miscellaneous test conditions, and strong engineering achievability

Active Publication Date: 2013-04-24
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

In theory, the phase center point of the array antenna is consistent with its geometric center, but due to the antenna processing and installation errors, the consistency of the amplitude and phase between the unit antennas, the mutual coupling between the unit antennas, etc., the phase center of the array antenna is the same as its geometric center. There is a deviation between the geometric centers

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  • Method for calibrating satellite navigation digital multi-beam launching array antenna phase center
  • Method for calibrating satellite navigation digital multi-beam launching array antenna phase center
  • Method for calibrating satellite navigation digital multi-beam launching array antenna phase center

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Embodiment Construction

[0034] Below in conjunction with specific embodiment and accompanying drawing, the present invention will be further described:

[0035] 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 can control the test turntable to complete the rotation of azimuth, pitch and polarization direction. The beacon antenna is installed on the distant beacon tower, and the signal received by the beacon antenna is transmitted to the computer room through the radio frequency cable, and then sent to the ranging receiving processing equipment after filtering and down-conversion processing of the receiving channel, and the ranging receiver The processing device completes the calculation and measurement of the pseudo-range value, and transmits the data to the control and information processing system through the network for storage. The control and i...

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Abstract

The invention discloses a method for calibrating a satellite navigation digital multi-beam launching array antenna phase center. Aiming at the effect of the launching array antenna phase center on satellite navigation high-precision ranging property, the invention provides a method for measuring and marking the array antenna phase center by adopting spread spectrum pseudo code ranging technology. The method for calibrating the satellite navigation digital multi-beam launching array antenna phase center can amend the high-precision ranging application of the satellite navigation field array antenna. The method for calibrating the satellite navigation digital multi-beam launching array antenna phase center has the advantages of being novel, creative, simple and practical.

Description

technical field [0001] The invention relates to a method for calibrating the phase center of a satellite navigation digital multi-beam transmitting array antenna, in particular to realizing the measurement and calibrating of the phase center of the array antenna by wireless spread spectrum pseudo-code ranging technology. Background technique [0002] With the development of communication, radar, and satellite navigation technologies, the requirements for tracking and positioning accuracy of antennas are getting higher and higher. Searching and positioning by amplitude beams alone can no longer meet the requirements, and high-precision measurements must be based on the phase center of the antenna. and positioning. The deviation of the phase center will directly affect the accuracy of measurement and positioning. For precision measurement applications, this effect cannot be ignored. Therefore, it is necessary to test and calibrate the phase center before the antenna is used. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/20
Inventor 翟江鹏蔚保国尹继凯魏海涛李刚王跃
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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