Positioning method oriented to on-spot measurement of immovable properties

A positioning method and on-the-spot measurement technology, applied in the field of surveying and mapping, to achieve the effect of avoiding error accumulation, compensating error accumulation, and improving accuracy

Active Publication Date: 2016-08-10
SOUTHEAST UNIV
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Problems solved by technology

[0004] Aiming at the problem of accumulation of inertial system errors over time, the present invention proposes a combined positioning method based on an inertial system and a laser ranging module that does not need to move the measuring device, has no error accumulation during the measurement process, and can significantly improve measurement efficiency.

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  • Positioning method oriented to on-spot measurement of immovable properties
  • Positioning method oriented to on-spot measurement of immovable properties
  • Positioning method oriented to on-spot measurement of immovable properties

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Embodiment Construction

[0038] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0039] The core component of the inertial positioning equipment in this embodiment is an inertial sensor, which is composed of a three-axis fiber optic gyroscope and a three-axis quartz flexible accelerometer. The data acquisition module selects a PC / 104 industrial computer, and the data output by the inertial sensor is collected and stored in a memory card. In the process, the handheld computer controls the PC / 104 industrial computer to start or stop collecting and storing data through Bluetooth.

[0040] figure 1 The flow chart of the inertial system / laser ranging module combination positioning method, the overall process of real estate field measurement is as follows:

[0041] (1) Determine the control point and the point to be measured: determine a point to be measured that needs to be measured in the operation area, select a...

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Abstract

The invention discloses a positioning method oriented to on-spot measurement of immovable properties. The method is characterized by measuring via a combined measurement device with an inertia measurement system and a laser distance measurement module. The method comprises the following steps: (1) determining a control point and a point to be measured; (2) measuring the distance between the point to be measured and the combined measurement device via the laser distance measurement module, carrying out four-position north seeking via the inertia measurement system; (3) resolving the four-position north-seeking data of the control point and calculating an attitude angle of the inertia measurement system during laser distance measurement; (4) carrying out distance conversion and calculating east orientation distance and north orientation distance of the point to be measured relative to the control point via the distance measured by the step (2) according to the attitude angle obtained by the step (3); (5) calculating coordinate of the point to be measured; and (6) repeating the steps (1)-(5) to acquire the position information of all the points to be measured. The positioning method is capable of quickly acquiring the position information of the points to be measured; the error accumulation in the measurement process is avoided; the measuring efficiency and the positioning accuracy are improved.

Description

technical field [0001] The invention belongs to the technical field of surveying and mapping, and relates to measurement, strapdown inertial navigation system initial alignment technology and laser ranging technology, in particular to an inertial system / laser ranging module positioning method for real estate field measurement. Background technique [0002] At present, conventional real estate field measurement methods mainly use GPS-RTK technology and total station measurement technology, but are restricted by buildings and structures, electromagnetic interference, and visibility conditions. Inertial Navigation System (INS) does not depend on external information and has good autonomy. Its combined system with GPS is gradually being applied to real estate field surveys. [0003] The existing real estate field measurement method is GPS / INS combined measurement technology. When the GPS signal is blocked, in the face of a complex measurement environment, it is necessary to mov...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01C21/16G01S17/08
CPCG01C21/16G01S17/08
Inventor吴峻闫晶蒋晨瑶王永杰
OwnerSOUTHEAST UNIV