Method for aligning base line of two-dimensional rotating table

Abstract

The invention discloses a method for aligning a base line of a two-dimensional rotating table, and the method uses radar equipment and low-cost equipment to realize rapid alignment of the base line ofthe two-dimensional rotating table under the environment of field testing. Mainly used auxiliary measuring equipment are GPS machine equipment, a geomagnetic sensor and a gradienter. The enforcementmode of the method includes the steps that firstly, the radar equipment is fixed to the rotating table, and the rotating table is leveled; secondly, a reference point is set beyond the distance being400m from the rotating table, an angle reflector is placed, and the longitude, latitude and height of the rotating table position and the reference point position are measured by GPS; thirdly, the rotating table is adjusted to align the forward-looking direction of a radar base with the position of the reference point, and thus the base line of the rotating table coincides with a reference base line; and fourthly, the azimuth angle and pitch angle of the rotating table base line are calculated and fused with a measurement value of the geomagnetic sensor to obtain a final measurement value of the rotating table base line. According to the method for aligning the base line of the two-dimensional rotating table, under the condition of field testing, the angle measurement characteristics of the radar equipment are fully utilized, the low-cost and easily purchased auxiliary equipment is adopted, and the simple, convenient and fast method for aligning the base line of the rotating table is achieved.

Description

technical field

[0001] The invention relates to a two-dimensional turntable baseline alignment method, in particular to a method for realizing the two-dimensional turntable baseline alignment by using low-cost equipment in the field test environment of radar equipment. Background technique

[0002] In the process of radar anti-jamming and anti-clutter research, it is necessary for radar equipment to record the echo data of targets and clutter in different scenarios in the test field. In this process, the beam pointing of radar equipment requires guidance information from external equipment. It boots. In order to achieve precise guidance of the radar beam direction, it is first necessary to accurately align the baseline of the radar equipment, that is, the baseline of the two-dimensional turntable where the radar is placed, with the local geographic coordinate system (northeast sky coordinate system) of the experiment. Under normal circumstances, the baseline alignment of th...

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