A Method of Radar Azimuth Positioning

Abstract

The invention discloses a radar azimuth positioning method, comprising the following steps: setting the value of the rotary encoder to 0 at the first zero positioning point of the radar, and at this time, the main axis of the radar rotates to the point where the auxiliary detector is High level position; establish the rotary encoder reading table when the radar reaches the zero point: │a×n / m│%a, │2a×n / m│%a,...,│(m‑1)a *n / m│%a, where a is the reading of the rotary encoder for one revolution; the main shaft of the radar moves to the position where the auxiliary detector generates a high-level signal, records the reading value of the rotary encoder at this time, and then rotates the encoder The only radar zero point position can be determined by looking up the rotary encoder reading table within the ±first preset width range of the encoder reading value. The present invention realizes the high-precision orientation of the radar main shaft without occupying the installation space of the radar main shaft and cannot use the installation position of the radar main shaft, and breaks through the limitation of the installation of the main shaft encoder.

Description

technical field [0001] The invention relates to the field of radar engineering, in particular to a method for radar azimuth positioning. Background technique [0002] Radar is a device that uses electromagnetic waves to find objects and determine their spatial location. The azimuth and angle measurement accuracy of the radar is composed of two parts. The first part is the north-pointing accuracy, that is, the zero-value accuracy of the radar; Angle measurement error caused by equipment measurement error. With the rapid development of rotary encoder technology, the measurement accuracy of angle measuring equipment is improving rapidly. Therefore, the northing accuracy of the radar has become the bottleneck of the accuracy of the radar azimuth angle measurement. [0003] Faced with the problem of radar northing accuracy, there are currently two conventional solutions: 1. Calibrate the radar pointing immediately after each power-on. Every time the radar is turned on, use th...

AI Technical Summary

Problems solved by technology

This makes the space on the main shaft of the radar insufficient, and it is difficult to install a high-precision rotary encoder or a separate rotary encoder with a large code disc, resulting in insufficient positioning accuracy or complex structure and increased volume

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