CN102980590A - Calibration method for ground-to-ground airborne sensor - Google Patents
Calibration method for ground-to-ground airborne sensor Download PDFInfo
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- CN102980590A CN102980590A CN2011102599381A CN201110259938A CN102980590A CN 102980590 A CN102980590 A CN 102980590A CN 2011102599381 A CN2011102599381 A CN 2011102599381A CN 201110259938 A CN201110259938 A CN 201110259938A CN 102980590 A CN102980590 A CN 102980590A
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Abstract
The invention discloses a calibration method for a ground-to-ground airborne sensor. The calibration method realizes rotation of x, y and z directions within three horizontal and vertical axes, meets the requirements of acquiring control points of spot scanning or line scanning airborne sensors through simulating flying attitude in a flying track at a height of 50 m and employing a tackle with a controllable speed ranging from 0.5 meter/second to 5.0 meters/second and a digital control system to simulate different speeds, directions and attitudes; then realizes calibration of the ground-to-ground airborne sensor by scanning and shooting high-density control points below a suspension arm, and applying a compound multi-reflection header and radiation features adapting to a plurality of types of the airborne sensors such as optical cameras, laser scanners and the like, and realizes a calibration precision with 1 : 500 map of the optical cameras such as SWDC, etc.
Description
Technical field:
Patent of the present invention is a kind of ground-to-ground airborne sensor calibration method, belongs to photogrammetric measurement and remote sensing technology field.
Background technology:
Airborne sensor calibration method is mainly by indoor fixedly calibration field and aeronautical experiment a kind of dynamic, the surface-to-surface airborne sensor calibration method that the basis of air to surface calibration field invents of flying at traditional airborne sensory equipment ground-to-ground.Traditional calibration method mainly contains two kinds, and a kind of is to adopt mode that indoor horizontal and static scanning take to control wall or control panel, and the reference mark by regular shape distributes or has the coordinate of degree of precision to carry out the calibration of sensor.Subject matter is that the horizontal scanning shooting is different from sensor real work pattern, can not altitude simulation working sensor state under mechanical features, calibration parameter and duty have larger difference.Another kind is the method that adopts aeronautical experiment flight, and this method utilizes flying platform lift-launch airborne sensor to carry out actual remote sensing operation, carries out the calibration of each parameter of sensor by the reference mark of the operating area being laid different densities.The method has the repeatability of good actual job, but owing to flight attitude, speed almost can not be controlled, comparatively applicable for film size formula optical sensor; But to obtaining the airborne sensor of data in the mode of spot scan or line sweep, the difficult identification of ground control point.Mainly be that the reference mark can not determine that one fixes on analyzing spot or the line because the flying platform flying speed is very fast.Airborne sensor calibration method can be used in the high precision calibration of the equipment such as photogrammetric measurement front end, aerial remote sensing load ground-to-ground, and main application fields is the departments such as territory, mapping, calamity emergency, water conservancy, highway, railway, urban construction, environmental protection.
Summary of the invention:
Patent of the present invention is a kind of ground-to-ground airborne sensor calibration method of deficiency proposition for the calibration mode of traditional indoor horizontal and static scanning and flight experiment calibration mode.Its objective is the calibration for the airborne sensor that adapts to the various modes such as film size formula, line sweep formula, spot scan formula.Be the airborne platform simulation that tower crane arm simulated flight track and digital control system by adjustable speed carry out friction speed, orientation, attitude, scanning shoot is carried out at the highdensity reference mark of arm below, realize ground-to-ground airborne sensor calibration.Main invention comprises: the flight track that 1) design-build is high 50 meters is simulated, and controls simulated flight platform state of flight by the digital radio of digital control system realization speed, orientation, attitude; 2) utilize the coaster of controlled speed, speed is controlled from 0.5 meter per second-5.0 meter per second.Friction speed overcomes the deficiency that spot scan and profile scanner set sensor are difficult to catch the reference mark simultaneously to the calibration of film size formula airborne sensor, spot scan and profile scanner set sensor; The reference mark of 3) encrypting and high-precision reference mark can realize that the calibration precision adapts to mapping requirement in 1: 500.Adopt combined type multiple reflection header, the radiation feature of polytype airborne sensor equipment such as adaptive optics camera, laser scanner; 4) the aerial guide rail of calibration (tower crane arm) length is 50 meters, highly is 50 meters, and the calibration field size is 90 meters * 120 meters, can realize the stereogram of main flow film size formula optical camera (such as SWDC, DMC) etc.
Embodiment:
A kind of ground-to-ground airborne sensor calibration method is the airborne platform simulation of carrying out friction speed, orientation, attitude by the tower crane arm simulated flight track of adjustable speed and digital control system, scanning shoot is carried out at highdensity reference mark to the arm below, realizes ground-to-ground airborne sensor calibration.Principal character comprises: 1) carry out the flight track simulation by reequiping tower crane for building, and realize the simulation of speed, orientation, attitude by digital control system; 2) the rail upper pulley of employing controlled speed, utilize the multi-usage link block can realize the inspection effect of film size formula airborne sensor, spot scan and profile scanner set sensor, utilize simultaneously and can carry out the rotation that horizontal vertical three axles are realized x, y, z direction, overcome the deficiency that spot scan and profile scanner set sensor are difficult to catch the reference mark; 3) calibration field reference mark density is encrypted regional reference mark at 2 meters * 2 meters simultaneously at 5 meters * 5 meters, and combined type multiple reflection header, the radiation feature of polytype airborne sensor equipment such as adaptive optics camera, laser scanner are adopted in the reference mark; 4) the aerial guide rail of calibration (tower crane arm) length is 50 meters, highly is 50 meters, and the calibration field size is 90 meters * 120 meters, can realize the stereogram of main flow film size formula optical camera (such as SWDC, DMC) etc.5) coordinate precision at the millimetre-sized reference mark of employing, the calibration precision of 1: 500 mapping of optical camera such as realization SWDC.
Claims (1)
- One kind ground-to-ground airborne sensor calibration method be the airborne platform simulation that tower crane arm simulated flight track and digital control system by adjustable speed carry out friction speed, orientation, attitude, scanning shoot is carried out at highdensity reference mark to the arm below, realizes ground-to-ground airborne sensor calibration.Principal character comprises: 1) carry out the flight track simulation by reequiping tower crane for building, and realize the simulation of speed, orientation, attitude by digital control system; 2) coaster of employing controlled speed is realized the inspection effect to film size formula airborne sensor, spot scan and profile scanner set sensor, overcomes the deficiency that spot scan and profile scanner set sensor are difficult to catch the reference mark; 3) calibration field reference mark density is encrypted regional reference mark at 2 meters * 2 meters simultaneously at 5 meters * 5 meters, and combined type multiple reflection header, the radiation feature of polytype airborne sensor equipment such as adaptive optics camera, laser scanner are adopted in the reference mark; 4) the aerial guide rail of calibration (tower crane arm) length is 50 meters, highly is 50 meters, and the calibration field size is 90 meters * 120 meters, can realize single stereograms such as main flow film size formula optical camera (such as SWDC, DMC).5) coordinate precision at the millimetre-sized reference mark of employing, the calibration precision of 1: 500 mapping of optical camera such as realization SWDC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102599381A CN102980590A (en) | 2011-09-05 | 2011-09-05 | Calibration method for ground-to-ground airborne sensor |
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| CN2011102599381A CN102980590A (en) | 2011-09-05 | 2011-09-05 | Calibration method for ground-to-ground airborne sensor |
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| CN102980590A true CN102980590A (en) | 2013-03-20 |
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| CN2011102599381A Pending CN102980590A (en) | 2011-09-05 | 2011-09-05 | Calibration method for ground-to-ground airborne sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506930A (en) * | 2011-11-10 | 2012-06-20 | 中国测绘科学研究院 | Checking device and method of aerial remote sensing integrated system |
| CN103337215A (en) * | 2013-06-13 | 2013-10-02 | 苏州科技学院 | Simulation teaching system for digital photogrammetry of UAV (unmanned aerial vehicle) |
Citations (2)
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| US20100265329A1 (en) * | 2006-10-06 | 2010-10-21 | Doneker Robert L | Lightweight platform for remote sensing of point source mixing and system for mixing model validation and calibration |
| CN102168989A (en) * | 2010-12-20 | 2011-08-31 | 北京航空航天大学 | Ground testing method for position accuracy and orientation accuracy of POS (Position and Orientation System) |
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2011
- 2011-09-05 CN CN2011102599381A patent/CN102980590A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100265329A1 (en) * | 2006-10-06 | 2010-10-21 | Doneker Robert L | Lightweight platform for remote sensing of point source mixing and system for mixing model validation and calibration |
| CN102168989A (en) * | 2010-12-20 | 2011-08-31 | 北京航空航天大学 | Ground testing method for position accuracy and orientation accuracy of POS (Position and Orientation System) |
Non-Patent Citations (3)
| Title |
|---|
| 关艳玲等: "虚拟现实技术的航空摄影测量地对地检校场选址研究", 《测绘科学》, vol. 35, no. 6, 30 November 2010 (2010-11-30), pages 52 - 53 * |
| 关艳玲等: "高精度轻小型航空遥感系统集成技术与方法", 《测绘科学》, vol. 36, no. 1, 31 January 2011 (2011-01-31), pages 84 - 86 * |
| 李瑞芳等: "高精度轻小型航空遥感集成系统室外检校场建设方案研究", 《测绘科学》, vol. 35, no. 6, 30 November 2010 (2010-11-30), pages 65 - 66 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506930A (en) * | 2011-11-10 | 2012-06-20 | 中国测绘科学研究院 | Checking device and method of aerial remote sensing integrated system |
| CN103337215A (en) * | 2013-06-13 | 2013-10-02 | 苏州科技学院 | Simulation teaching system for digital photogrammetry of UAV (unmanned aerial vehicle) |
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Application publication date: 20130320 |
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