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Rapid anti-disturbance north finding instrument based on transposition north finding technology and north finding method

An anti-disturbance and north-finding instrument technology, applied in the field of north-seeking instruments, to achieve the effects of reducing measurement errors, accurate and fast north-seeking positioning, and rich data collection

Inactive Publication Date: 2015-01-07
BEIJING INST OF SPACE LAUNCH TECH +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In order to extend the service life, a double U-shaped spring is installed between the two limit blocks to prolong the service life, but it can only be extended for several months

Method used

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  • Rapid anti-disturbance north finding instrument based on transposition north finding technology and north finding method

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Embodiment Construction

[0021] Such as figure 1 As shown, an anti-disturbance fast north-finder based on indexing north-seeking technology of the present invention includes a base 1 and an indexing device 2 . The base 1 is fixedly connected with the stator of the indexing device 2 . The front and rear ends of the stator of the indexing device 2 are provided with limit seats, and the rotor of the index device 2 is provided with a limit block matched with the limit seat. The limit block and the limit seat are used to rotate the positioning rotor back and forth relative to the stator. 180°, it also includes a three-axis IMU assembly 21 , an I / F board 4 and a main control board 3 . The three-axis IMU assembly 21 is fixed on the rotor of the indexing device 2, and the three-axis IMU assembly 21 is composed of a three-axis laser gyroscope and a three-axis accelerometer. The three-axis laser gyro is used to measure the angular velocity of the base 1. The three-axis accelerometer is used to measure the ac...

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Abstract

The invention relates to a rapid anti-disturbance north finding instrument based on a transposition north finding technology, which relates to a north finding instrument, in particular to a rapid high-precision north finding instrument for vehicle orientation. The invention aims at providing a rapid anti-disturbance north finding instrument based on the transposition north finding technology, which is simple in structure, fewer in measuring errors, short in measuring time, not afraid of external disturbance and long in service life. The rapid anti-disturbance north finding instrument based on the transposition north finding technology comprises a three-axis IMU (inertial measurement unit) assembly (21), an I / F (current / frequency) plate (4) and a main control board (3), wherein the three-axis IMU assembly (21) is fixed on a rotor of a transposition device (2), the three-axis IMU assembly (21) consists of a three-axis laser gyroscope and a three-axis accelerometer, a signal is transmitted by the I / F plate (4) to the main control board (3), the main control board (3) adopts an architecture of DSP (digital signal processor) and FPGA (field programmable gate array), and the main control board (3) is used for receiving a north finding instruction, calculating a transposition north finding algorithm, acquiring data and controlling peripheral equipment.

Description

technical field [0001] The invention relates to a north-seeking instrument, in particular to a high-precision and fast north-finding instrument for vehicle orientation and a north-finding method thereof. Background technique [0002] Traditional gyro north-seeking technology relies on inertial components to sense the horizontal component of the earth's rotation angular rate to complete the north-seeking function under static conditions. It usually requires at most a two-axis flexible gyro and a two-axis accelerometer, and has no anti-disturbance north-seeking capability. However, due to measurement factors such as instrument errors, the measurement error is 216″ and the measurement time is 5 minutes, which is difficult to meet the high-precision requirements for applications in surveying and mapping, mines, tunnels, military, aviation, aerospace and other fields, especially in the positioning of military vehicle-mounted missiles. In north-seeking devices, that is, in domesti...

Claims

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Application Information

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IPC IPC(8): G01C21/18
CPCG01C17/00
Inventor 王盛白焕旭任建国孙寿才张桃源卫瑞朱燕萍
Owner BEIJING INST OF SPACE LAUNCH TECH
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