Point cloud plane precision detecting device of airborne laser radar
An airborne laser radar and plane precision technology, which is applied in the directions of measuring devices, radio wave measurement systems, electromagnetic wave reradiation, etc., can solve the problem that the plane precision of the airborne laser radar point cloud cannot be accurately detected, so as to ensure accuracy and Accuracy, improved accuracy, and the effect of easy detection
Active Publication Date: 2013-01-23
CHINA RAILWAY DESIGN GRP CO LTD
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Problems solved by technology
[0010] Aiming at the problem that the plane accuracy of the airborne lidar point cloud cannot be accurately detected in the prior art, the present invention introduces a device for accurately detecting the plane accuracy of the airborne lidar point cloud, which uses the point cloud reflection antenna to enable the airborne lidar to obtain intersections The detection points on multiple straight lines at the same point, through the processing of these points, the precise detection of the laser radar point cloud plane accuracy can be realized
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[0032] The technical scheme of the device of the present invention will be further described in conjunction with the accompanying drawings. figure 1 and image 3 Show the basic structure of the airborne lidar point cloud planar accuracy detection device, figure 2 and Figure 4Shows the structure of its antenna holder. As shown in the figure, the airborne laser radar point cloud plane precision detection device involved in the present invention includes a tripod 4, a telescopic single rod 3, a point cloud reflection antenna, an antenna holder, and a circular level bubble 2, which are fixed as a whole. The tripod 4 is made of a metal round tube, the upper end of the tripod 4 is fixed to the lower part of the telescopic single pole 3, and the top of the telescopic single pole 3 is fixed with the antenna holder to install the point cloud reflective antenna, which is composed of multiple equiangular intersecting antennas. The single antenna poles 1 are arranged, and the single ...
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The invention discloses a point cloud plane precision detecting device of airborne laser radar, comprising a tripod, a telescopic single rod, a point cloud reflection antenna, a circular level bubble and an antenna fixator which are fixed integrally by screws. The upper end of the tripod is fixed together with the lower part of the telescopic single rod, the point cloud reflection antenna is installed fixedly at the top of the telescopic single rod by the antenna fixator and the circular level bubble is arranged on the telescopic single rod. The point cloud reflection antenna is composed of aplurality of antenna single rods which are in equiangular arrangement; the antenna single rods are arranged at different heights at a plane perpendicular to the telescopic single rod; and the projections of all antenna single rods on the horizontal plane pass through one same intersection point. The telescopic single rod includes the outer rod of non-telescopic part at the lower part and the inner rod of telescopic part at the upper part; the telescopic length of the telescopic single rod ranges from 1.4 m to 2.5 m. The device solves the problem that the laser point cloud plane precision cannot be detected accurately and causes the precision detection of the laser point cloud plane precision to be relatively easier.
Description
technical field [0001] The invention relates to an aerial survey device, in particular to a device for plane accuracy detection of an airborne laser radar. Background technique [0002] Airborne Lidar (LIDAR, Light Detection and Ranging) is a software and hardware system based on the integration of laser ranging technology, GPS technology, inertial navigation technology, and CCD technology. High-precision and high-density three-dimensional point coordinates (point cloud for short) can be obtained through the airborne lidar, and a high-precision digital ground model (DEM, Digital Elevation Model) can be obtained after processing. LIDAR technology can quickly obtain high-precision DEM, and has the characteristics of simple data acquisition, high degree of automation, high production efficiency, high precision, and little weather influence. [0003] The process of airborne lidar to obtain space three-dimensional point coordinates is as follows: the airborne lidar measures the ...
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IPC IPC(8): G01S17/88G01S7/481
Inventor 高文峰赵海韩祖杰王长进李平苍张丽
Owner CHINA RAILWAY DESIGN GRP CO LTD