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A timing measurement method for high-precision inertial navigation equipment

A technology of inertial navigation equipment and timing measurement, applied in the direction of measuring devices, instruments, etc., can solve problems such as large measurement errors and affecting system accuracy, and achieve the effects of improving heading accuracy, high measurement accuracy, and low cost

Active Publication Date: 2021-11-09
TIANJIN NAVIGATION INSTR RES INST
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AI Technical Summary

Problems solved by technology

When there is a large timing error, it will cause a large measurement error, which will seriously affect the accuracy of the system

Method used

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  • A timing measurement method for high-precision inertial navigation equipment
  • A timing measurement method for high-precision inertial navigation equipment
  • A timing measurement method for high-precision inertial navigation equipment

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Embodiment Construction

[0020] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] A timing measurement method for high-precision inertial navigation equipment, such as figure 1 shown, including the following steps:

[0022] Step 1. The inertial navigation computer in the inertial navigation system adjusts the timing of the accelerometer and the axis angle sensor.

[0023] In this embodiment, the inertial navigation computer in the inertial navigation system is responsible for generating the overall timing of the system. Under the strict control of the timing, the inertial navigation solves the navigation with a cycle T, and the inertial navigation computer collects the data of each component in each cycle. In order to reduce the interference of other factors, it is necessary to adjust the clock edge of the data sampling signal of the accelerometer and the axis angle sensor to the same time, and the synchronization ac...

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Abstract

The invention relates to a timing measurement method for high-precision inertial navigation equipment, and its technical characteristics include the following steps: an inertial navigation computer in an inertial navigation system adjusts the timing sequence of an accelerometer and an axis angle sensor; the data acquisition computer acquires heading data during navigation work; The data acquisition computer calculates the timing error; the inertial navigation computer uses the timing error to correct the overall timing of the system. The present invention calculates the time sequence error between the gyroscope and the axis angle sensor according to the sudden change of course error of the system rotation mechanism when the rotation sequence is switched by the method of recording system navigation data, and the time sequence error is used to correct the overall time sequence of the system to improve the The purpose of the heading accuracy of the system is to effectively improve the accuracy of the inertial navigation system, and the invention can be widely used in the timing error measurement of the inertial navigation system with a rotating mechanism.

Description

technical field [0001] The invention belongs to the technical field of timing measurement of inertial navigation equipment, in particular to a timing measurement method of high-precision inertial navigation equipment. Background technique [0002] With the continuous advancement of inertial navigation system technology and the increasing accuracy of inertial navigation equipment, higher and higher requirements are placed on the timing measurement accuracy of various components in the equipment. Especially for inertial navigation systems with rotating mechanisms such as rotary and hybrid, in order to ensure that the system can exert the accuracy of inertial components under dynamic conditions and achieve higher system accuracy indicators, a more accurate measurement of timing errors between components is proposed. high demands. [0003] Gyroscopes, accelerometers, and axis angle sensors are the core components of an inertial navigation system with a rotating mechanism. Unde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 邰洋胡小毛高峰王桂如李德春吴国强
Owner TIANJIN NAVIGATION INSTR RES INST
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