CN203930068U - Airborne scanning laser radar system - Google Patents
Airborne scanning laser radar system Download PDFInfo
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- CN203930068U CN203930068U CN201420385301.6U CN201420385301U CN203930068U CN 203930068 U CN203930068 U CN 203930068U CN 201420385301 U CN201420385301 U CN 201420385301U CN 203930068 U CN203930068 U CN 203930068U
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- laser radar
- radar system
- scanning laser
- gps receiver
- imaging device
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Abstract
The utility model relates to a kind of airborne scanning laser radar system, comprise measurement mechanism, scanner, imaging device, control, monitoring, pen recorder, GPS receiver and attitude measuring, described control, monitoring, pen recorder respectively with described measurement mechanism, scanner, imaging device, GPS receiver is connected with attitude measuring, and described scanner is also connected with imaging device with measurement mechanism respectively.The airborne scanning laser radar system that the utility model provides is when flight operation, and to not restriction of flying height, the stepping of swing is even, and equipment has reliable stability, and scanning sample rate is higher.
Description
Technical field
The utility model relates to a kind of equipment and system of using laser radar to scan to obtain surveying and mapping data, relates in particular to a kind of airborne scanning laser radar system, belongs to laser radar field.
Background technology
The operation wavelength of airborne laser radar (Light Detection And Ranging, LiDAR) is from the infrared ultraviolet light spectral coverage that extends to.It take aircraft as platform, and laser is carrier frequency, is the product of light, mechanical, electrical combination, is also that radar frequency extends to the more result of high band.It is integrated in one laser ranging (LS) technology, global location (GPS) technology, inertial navigation (INS) technology, for generating exact figure elevation model (DEM) and digital terrain model (DTM).During laser radar work, the pulse of laser instrument transmitting light beam, beats on object and reflects, and received device receives.Receiver is measured light pulse exactly from being transmitted into the travel-time reflecting.In view of the light velocity is known, the travel-time can be exchanged into the measurement of adjusting the distance.In conjunction with the locus of laser instrument and the attitude parameter of flying platform, just can accurately calculate the three-dimensional coordinate of each ground laser pin point.
Along with the development of laser technology, sensor technology, computer technology, airborne laser radar measuring technique becomes a kind of brand new technical means of obtaining high-resolution three-dimension spatial information.Airborne laser radar is measured and not limited by weather condition, therefore the round-the-clock earth observation of energy; Laser pulse energy penetrates the woods and blocks, therefore can obtain the vertical stratification form of earth's surface object; The continuous automatic acquisition detection data of computing machine, makes data processing towards intelligent and automation direction development.These features make airborne laser radar be with a wide range of applications at aspects such as topographic mapping, resource exploration, environmental monitoring, forest survey, disaster monitorings.
Laser radar has been widely used in the fields such as measurement, remote sensing, range finding, domestic laser radar is mainly introduced by the mode from external import at present, on hardware device, there is no more extendability and ability of second development, therefore, common laser radar is often subject to the impact of stability, reliability and airborne platform in use, and service precision is not high.
Utility model content
In order to overcome the deficiencies in the prior art, resolve the problem of prior art, make up the deficiency of existing existing product in the market.
The utility model provides a kind of airborne scanning laser radar system, comprise measurement mechanism, scanner, imaging device, control, monitoring, pen recorder, GPS receiver and attitude measuring, described control, monitoring, pen recorder respectively with described measurement mechanism, scanner, imaging device, GPS receiver is connected with attitude measuring, and described scanner is also connected with imaging device with measurement mechanism respectively.
Preferably, above-mentioned control, monitoring, pen recorder are comprised of control device, monitor and registering instrument.
Preferably, above-mentioned GPS receiver is dynamic difference GPS receiver.
Preferably, the roll of above-mentioned attitude measuring survey aircraft, side direction and three kinds of attitude datas of pitching.
Preferably, above-mentioned imaging device records the space geometry feature of measured zone.
Preferably, above-mentioned GPS receiver is measured the volume coordinate at laser instrument space projection center.
Preferably, above-mentioned measurement mechanism is laser range finder, measures the distance between laser instrument space projection center and ground laser pin point.
The airborne scanning laser radar system that the utility model provides is when flight operation, and to not restriction of flying height, the stepping of swing is even, and equipment has reliable stability, and scanning sample rate is higher.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
For the ease of those of ordinary skills, understand and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
The airborne scanning laser radar system that the utility model provides is obtained the cloud data on earth's surface by point by point scanning, coordinate POS measuring system to obtain three-dimension terrian information.System is comprised of following four parts:
1. laser range finder, its measures the distance between laser instrument space projection center and ground laser pin point;
2. dynamic difference GPS receiver, its measures the volume coordinate at laser instrument space projection center;
3. attitude measuring, its measures three attitude parameters of laser instrument;
4. imaging device, it records the space geometry feature of measured zone.
If there is a vectorial S in space, its mould is S, and direction is (θ, ω, κ), if measure the coordinate (X of this vector starting point G
g, Y
g, Z
g), the coordinate (X of another end points of this vector P
p, Y
p, Z
p) just can uniquely determine.
For airborne laser radar measuring system, starting point G is the space projection center of remote sensor optical system, its coordinate (X
g, Y
g, Z
g) can utilize dynamic difference GPS receiver to measure; The mould S of vector can the distance to ground laser pin point obtain by airborne laser rangefinder reference center; The available high-precision attitude measurement mechanism of deflection (θ, ω, κ) is measured, so arbitrarily geographic coordinate (the X of laser pin point P
p, Y
p, Z
p) can be tried to achieve by following formula:
Airborne laser radar is by fixing interval Emission Lasers pulse on every sweep trace, and on laser pulse slave, remote sensor projection centre has just formed above-mentioned limited vector after being mapped to ground, and on ground, the geographic coordinate of this point can be obtained by above-mentioned formula.In remotely sensed image process, the fixing pixel in interval on each sweep trace, in the moment of this pixel imaging, laser pulse of synchronized transmissions, the geographic coordinate of this pixel can be determined, utilizes the motion of aircraft to realize two-dimensional scan, so just can on remote sensing images, obtain arranging the more sparse two-dimensional image element array with geographic coordinate, last matching interpolating method routinely, can generating digital ground model and geo-referencing image.
The airborne scanning laser radar system that the utility model provides is when flight operation, and to not restriction of flying height, the stepping of swing is even, and equipment has reliable stability, and scanning sample rate is higher.
The embodiment of the above is better embodiment of the present utility model; not with this, limit concrete practical range of the present utility model; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence that all shapes according to the utility model, structure are done changes all in protection domain of the present utility model.
Claims (7)
1. an airborne scanning laser radar system, it is characterized in that: described system comprises measurement mechanism, scanner, imaging device, control, monitoring, pen recorder, GPS receiver and attitude measuring, described control, monitoring, pen recorder respectively with described measurement mechanism, scanner, imaging device, GPS receiver is connected with attitude measuring, and described scanner is also connected with imaging device with measurement mechanism respectively.
2. airborne scanning laser radar system according to claim 1, is characterized in that: described control, monitoring, pen recorder are comprised of control device, monitor and registering instrument.
3. airborne scanning laser radar system according to claim 2, is characterized in that: described GPS receiver is dynamic difference GPS receiver.
4. airborne scanning laser radar system according to claim 1, is characterized in that: the roll of described attitude measuring survey aircraft, side direction and three kinds of attitude datas of pitching.
5. airborne scanning laser radar system according to claim 1, is characterized in that: described imaging device records the space geometry feature of measured zone.
6. airborne scanning laser radar system according to claim 1, is characterized in that: described GPS receiver is measured the volume coordinate at laser instrument space projection center.
7. airborne scanning laser radar system according to claim 1, is characterized in that: described measurement mechanism is laser range finder, measures the distance between laser instrument space projection center and ground laser pin point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385301.6U CN203930068U (en) | 2014-07-01 | 2014-07-01 | Airborne scanning laser radar system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385301.6U CN203930068U (en) | 2014-07-01 | 2014-07-01 | Airborne scanning laser radar system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203930068U true CN203930068U (en) | 2014-11-05 |
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ID=51825865
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420385301.6U Expired - Fee Related CN203930068U (en) | 2014-07-01 | 2014-07-01 | Airborne scanning laser radar system |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199562A (en) * | 2016-07-06 | 2016-12-07 | 山东省科学院海洋仪器仪表研究所 | The sea error calibration method of sea-floor relief is measured based on airborne laser radar |
-
2014
- 2014-07-01 CN CN201420385301.6U patent/CN203930068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199562A (en) * | 2016-07-06 | 2016-12-07 | 山东省科学院海洋仪器仪表研究所 | The sea error calibration method of sea-floor relief is measured based on airborne laser radar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150701 |
|
| EXPY | Termination of patent right or utility model |