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Measuring method for calibration of north direction of phased array antenna based on gyro orientation

A phased array antenna, measurement method technology, applied in directions such as direction finders using radio waves, gyroscopes/steering induction equipment, radio wave direction/bias determination systems, etc. Accurate results and convenient results

Active Publication Date: 2015-05-20
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a measurement method for calibrating the north direction of a phased array antenna by using a gyro total station in view of the deficiencies in the above-mentioned prior art. The traditional installation and calibration method of phased array antenna is time-consuming, labor-intensive and poor in accuracy

Method used

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  • Measuring method for calibration of north direction of phased array antenna based on gyro orientation
  • Measuring method for calibration of north direction of phased array antenna based on gyro orientation
  • Measuring method for calibration of north direction of phased array antenna based on gyro orientation

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Embodiment

[0030] The first step is to select a ground point A in the open space around the phased array antenna, so that point A can see through the center point O of the phased array antenna, place a gyro total station at point A and aim at point O, point O and point A The horizontal distance is equal to 25m; the azimuth α of the measurement line AO AO ;

[0031] Table 1 Observation results table of gyro total station

[0032]

[0033] alpha AO =358°32′00″

[0034] In the second step, according to the azimuth α of the survey line AO AO Back-calculated azimuth angle of survey line OA, α OA = α AO -180°=178°32′00″;

[0035] The third step is to install the total station at point O, and aim the mirror at point A. At this time, register the horizontal dial of the total station so that the actual reading of the total station in the direction of A is the azimuth α of the survey line OA OA =178°32′00″

[0036] The fourth step is to rotate the aiming part of the total station so tha...

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Abstract

The invention discloses a measuring method for calibration of north direction of a phased array antenna based on gyro orientation. The measuring method comprises the following steps of 1, selecting a ground point A around the phased array antenna, arranging a gyro total station at the point A, and measuring the azimuth alphaAO of a measuring line AO; 2, calculating to obtain the azimuth of a measuring line OA; 3, arranging a total station at a point O, enabling a front mirror of the total station to sight the ground point A; configuring a horizontal dial of the total station, and setting the reading of the horizontal dial of the total station as alphaAO; 4, rotating a sighting part of the total station, setting the reading of the horizontal dial along the sighting direction of the total station as 0 (degree)-00 (minute)-00 (second), and selecting any point N on a true north direction line as a calibration reference point; 5, arranging the total station at the point N, enabling the total station to sight a point O, horizontally rotating the phased array antenna by using the point O as the center of a circle, and positioning the main axis of the phased array antenna on a sight line direction, so as to complete the measuring on the calibration of the true north direction of the phased control antenna. The measuring method can effectively solve the problems of waste of time and labor and low calibration accuracy of the existing conventional calibration method.

Description

technical field [0001] The invention belongs to the technical field of geodesy, and in particular relates to a measurement method for calibrating the north direction of a phased array antenna based on gyro orientation. technical background [0002] The phased array antenna is an antenna that changes the shape of the pattern by controlling the feeding phase of the radiating unit in the array antenna. It is often used in the fields of ground-to-air signal reception and transmission, ballistic missile defense, and satellite signal transmission and reception. Controlling the phase can change the direction of the maximum value of the antenna pattern to achieve the purpose of beam scanning. The pointing algorithm uses the true north as the reference of the antenna rotation angle. If the main axis of the antenna is installed away from the true north, it will cause pointing errors. Therefore, the installation of the phased array antenna needs to strictly point to the true north dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14
CPCG01C1/00G01C19/00
Inventor 石震杨志强武继峰
Owner CHANGAN UNIV
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