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Dynamic positioning system of total station combined inertial measurement unit

An inertial measurement unit and dynamic positioning technology, applied in the direction of measuring devices, navigation through speed/acceleration measurement, instruments, etc., can solve problems such as areas where it is difficult to apply and where marker points cannot be set

Inactive Publication Date: 2019-09-10
武汉新瑞通达信息技术有限公司
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Problems solved by technology

GNSS and its inertial integrated navigation system have been widely used. However, the satellite navigation method is too dependent on the information of the satellite system. No areas, structures such as dams and bridges, catastrophic environments, satellite navigation and positioning equipment and areas where personnel cannot reach, areas where marker points cannot be set) are difficult to apply

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  • Dynamic positioning system of total station combined inertial measurement unit
  • Dynamic positioning system of total station combined inertial measurement unit
  • Dynamic positioning system of total station combined inertial measurement unit

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Embodiment Construction

[0012] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0013] refer to figure 1 , The dynamic positioning system of the total station combined with the inertial measurement unit includes five parts: the inertial measurement unit, the total station, the time synchronizer, the odometer, and the data processing unit. The data processing unit can be realized by a computer.

[0014] According to the deployment relationship of each part, the integrated navigation system of total station and inertial measurement unit can be divided into two parts: observation station and rover. Among them, the total station, time synchronizer and computer are fixedly placed at known control points as part of the observation station, and the inertial measurement unit, total reflection prism and odo...

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Abstract

The invention discloses a dynamic positioning system of a total station combined inertial measurement unit, and the system comprises an inertial measurement unit, a total station, a time synchronizer,an odometer and a data processing unit. When the system works, the total station body tracks a reflecting prism in real time, and gives observation information of the position of the prism after timesynchronization is carried out by the time synchronizer, wherein the observation information refers to an oblique distance, a course and a pitch angle; after the inertia data measured by the inertiameasurement unit and the increment information of the odometer are subjected to time synchronization by the time synchronizer, the inertia data and the increment information of the odometer are in a unified time reference with the observation information of the total station, and the data are sent to a Kalman filter in a data processing unit to be subjected to data calculation in a unified manner,so that the positioning information is obtained. The invention discloses a high-precision automatic tracking total station / inertial measurement unit combined measurement system for special use environments such as ports, wharfs and airport runways, and realizes navigation positioning precision of 10 cm in a complex electromagnetic environment.

Description

technical field [0001] The invention relates to the field of positioning, in particular to a combination of an automatic tracking total station and an inertial measurement unit, so as to realize a high-precision positioning system under vehicle dynamic conditions in a local area. Background technique [0002] At present, the commonly used dynamic high-precision positioning method adopts the combination of satellite positioning and inertial positioning. In practical applications, for example, receivers in the military field often face complex and changeable environments such as high dynamics, weak signals, strong interference or signal occlusion. At the same time, in a complex electromagnetic environment, satellite navigation and positioning systems such as GPS / Beidou are extremely vulnerable to suppression and spoofing interference (see "Research on Satellite Communication Interference Technology", "Research on Anti-Spoofing Interference Methods for Satellite Navigation Recei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01C21/20
CPCG01C21/005G01C21/165G01C21/20
Inventor 张庆
Owner 武汉新瑞通达信息技术有限公司
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