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Inertial platform leveling aiming error self-detection method

An inertial platform and aiming error technology, which is applied in the field of self-detection of inertial platform leveling and aiming errors, can solve problems such as complicated process and inability to realize leveling and aiming error detection

Active Publication Date: 2015-07-08
BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1
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Problems solved by technology

This method not only complicates the process, but also cannot achieve accurate leveling and aiming error detection

Method used

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  • Inertial platform leveling aiming error self-detection method
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  • Inertial platform leveling aiming error self-detection method

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Embodiment Construction

[0048] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0049] The leveling and aiming result of the inertial platform is an attitude result of the platform body relative to the local geographic coordinate system, and its detection is to use various information to obtain the true attitude of the platform body relative to the local geographic coordinate system. According to the working characteristics of the inertial platform coordinate system, it can be known that the angular motion and specific force information of the platform body relative to the inertial space can be obtained by measuring the drift and accelerometer under the condition of broken leveling. The attitude information of the platform body relative to the local area is calculated in real time, which provides the basis for the leveling and aiming error detection of the inertial platform. On this basis, the attitude information of the platform body can be calc...

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Abstract

The invention discloses an inertial platform leveling aiming error self-detection method. The method comprises the following steps: allowing an inertial platform to enter a leveling-off state after leveling aiming of the inertial platform, calculating the relatively-local real time attitude of the inertial platform according to measured information of the inertial platform in the state within a period of time, and reckoning the attitude of the platform by combining with a leveling-off time difference until leveling aiming ends in order to realize the method for examining the leveling aiming error of the inertial platform through a self-measurement value. The method has the advantages of simple operation, and realization of accurate leveling aiming error detection.

Description

technical field [0001] The invention relates to a self-detection method for leveling and aiming errors of an inertial platform. Background technique [0002] Inertial platform is a commonly used precision navigation instrument, which is widely used in high-tech fields that require high-precision autonomous navigation and guidance, such as naval ships, strategic missiles, aircraft, and satellites. The leveling and aiming of the inertial platform is the prerequisite for its precise inertial navigation and guidance. [0003] The leveling and aiming error of the inertial platform is an important factor affecting the accuracy of its inertial navigation. The leveling and aiming error of the inertial platform will directly affect the inertial navigation accuracy of the corresponding carrier. For military application backgrounds such as strategic missiles, excessive leveling and aiming Errors can have extremely serious consequences. Therefore, the detection of leveling and aiming ...

Claims

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 张义宋维军董纯韩利军尚腾
Owner BEIJING AEROSPACE AUTOMATIC CONTROL RES INST
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