Method for testing azimuthal angle of base station antenna

Abstract

The invention provides a method for testing an azimuthal angle of a base station antenna. The method comprises steps as follows: a good magnetic field position A with a magnetic field value in an interval of 35-55 is searched from the side edge or the back of the base station antenna; test equipment is vertically lifted and stays in the position A for 2-3 s, and when vertical deviation of a pitch angle and step amplitude of an azimuthal value are both in a reasonable range, the azimuthal value a is locked by the test equipment, and a tester is prompted; after the tester acquires the prompt, a meter is slowly translated and attached to the back position B of the base station antenna at a constant speed; the condition that the test equipment is in a non-moving or micro-moving state for 3-5 s is acquired through comprehensive monitoring for a gyroscope, a three-axis acceleration sensor and a magnetic sensor, then a specific rotating angle is locked automatically, a translation angle value b is obtained, and an accurate azimuthal value c of the base station antenna is obtained according to a calculation formula shown in the specification. Therefore, the optimal test is realized through optimization of various sensors and filtering of data.

Description

technical field [0001] The invention relates to a method for testing the azimuth angle of a base station antenna. Background technique [0002] Traditionally, a compass is used to measure the azimuth angle of the base station antenna. At a position with a relatively large vertical / horizontal distance from the measured antenna, (human) single-eye aim the compass aiming at the direction of the base station antenna, and then read the azimuth value from the scale facing the N pole of the magnetic needle. Limited by being far away from the antenna under test, the tester can only make judgments on the basis of experience when aligning, and the stability of the hand-held instrument cannot be guaranteed, and the sensitivity of the pointer itself is very unfavorable for accurate measurement of the azimuth value; therefore, in The industry believes that the test deviation of the compass is above ±15°, while the mutual deviation of the test results of the same test object and differen...

AI Technical Summary

Problems solved by technology

Limited by being far away from the antenna under test, the tester can only make judgments on the basis of experience when aligning, and the stability of the hand-held instrument cannot be guaranteed, and the sensitivity of the pointer itself is very unfavorable for accurate measurement of the azimuth value; therefore, in The industry believes that the test deviation of the compass is above ±15°, while the mutual deviation of the test results of the same test object and different testers is even greater

The method of testing the azimuth with the compass is limited by the interference of the magnetic field and cannot be tested within the close range of the antenna

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