CN204269826U - Airborne scanning laser ranging system - Google Patents
Airborne scanning laser ranging system Download PDFInfo
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- CN204269826U CN204269826U CN201420347013.1U CN201420347013U CN204269826U CN 204269826 U CN204269826 U CN 204269826U CN 201420347013 U CN201420347013 U CN 201420347013U CN 204269826 U CN204269826 U CN 204269826U
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Abstract
The utility model relates to a kind of airborne scanning laser ranging system, laser distance measuring system comprises laser instrument (1), sampling thief (3), counter (4), detector (5), primary mirror (6), prism (8), scanning prism (9), scan module (10) and scrambler (11), turning mirror (2) is provided with between described laser instrument (1) and sampling thief (3), the light beam that laser instrument (1) sends road after turning mirror (2) arrives target through prism (8), another road arrives detector (5) after oversampler (3) sum counter (4), the light beam that objective emission returns through scanning prism (9) laggard through primary mirror (6) reflection after after secondary mirror (7), arrive detector (5).The airborne scanning laser ranging system that the utility model provides adds optical prism, condenser in traditional laser range finder, by the adjustment of optical system, improve the precision of range measurement system and the stability of system, ensure that the properties of range finding when high-speed motion.
Description
Technical field
The utility model relates to a kind of airborne scanning laser ranging instrument optical system and laser distance measuring system merged mutually, particularly relates to a kind of airborne scanning laser ranging system, belongs to laser scanning field.
Background technology
The laser beam error in pointing that the change of scanning machine bone laser radar platform speed, attitude jitter, scanning mirror vibration and the departure etc. of load inner scanning mechanism cause offsets causing the coordinate of cloud data, and then causes the Severe distortion of imaging.Carry out Error Tracing & for the imperfect motion of platform and random vibration, set up airborne laser radar laser beam error in pointing dynamic model, significant to the imaging of high precision real time kinematics.
The appearance of three-dimensional laser measuring technique and development, for the acquisition of space three-dimensional information and spatial information digital development provide brand-new technological means.Along with the development of correlation technique and the promotion of application demand, lidar measurement technology is also progressively developed into by the laser ranging system of point-to-point and adopts noncontact Active measuring mode, the laser scanning measurement technology of a large amount of sampled point three dimensional space coordinate of quick obtaining body surface.
External comparatively deep to laser distance measuring system research at present, but the precision of hardware device generally all only paid attention to by domestic laser ranging instrument, algorithmically also there is certain research, but how to improve precision and stability further, not in conjunction with the further complementary advantage of optical technology.
Utility model content
In order to overcome the deficiencies in the prior art, resolving the problem of prior art, making up the deficiency of existing existing product in the market.
The utility model provides a kind of airborne scanning laser ranging system, laser distance measuring system comprises laser instrument, sampling thief, counter, detector, primary mirror, prism, scanning prism, scan module and scrambler, turning mirror is provided with between described laser instrument and sampling thief, the light beam that laser instrument sends road after turning mirror arrives target through prism, another road arrives detector after oversampler sum counter, and the light beam that objective emission returns arrives detector through scanning prism is laggard after primary mirror reflects after secondary mirror.
Preferably, above-mentioned sampling thief is main wave sampler.
Preferably, above-mentioned counter is range counter.
Preferably, above-mentioned detector is sounder.
The airborne scanning laser ranging system that the utility model provides adds optical prism, condenser in traditional laser range finder, by the adjustment of optical system, improve the precision of range measurement system and the stability of system, ensure that the properties of range finding when high-speed motion.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Reference numeral: 1-laser instrument; 2-turning mirror; 3-sampling thief; 4-counter; 5-detector; 6-primary mirror; 7-secondary mirror; 8-prism; 9-scanning prism; 10-scan module; 11-scrambler.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
Due to the high-speed motion of airborne platform, there is deviation in outgoing beam direction and the design direction of laser beam after scanning mirror reflection, i.e. generation laser beam error in pointing.The source of laser beam error in pointing is a lot, comprises laser-beam divergence and pulse strenching, Light Electrical scanning system error, atmospheric turbulence and disturbance etc.Analyzing different reason, and study their impact, is the basis of complicated high-order multi-module machine bone laser radar systematic error and random error model under setting up motion state.
The laser distance measuring system composition that the utility model provides as shown in Figure 1, comprise laser instrument 1, sampling thief 3, counter 4, detector 5, primary mirror 6, prism 8, scanning prism 9, scan module 10 and scrambler 11, turning mirror 2 is provided with between described laser instrument 1 and sampling thief 3, the light beam that laser instrument 1 sends road after turning mirror 2 arrives target through prism 8, another road arrives detector 5 after oversampler 3 sum counter 4, the light beam that objective emission returns through scanning prism 9 laggard through primary mirror 6 reflect after after secondary mirror 7, arrive detector 5.Scrambler 11 is connected with scan module 10, and scan module 10 drives scanning prism 9.Wherein, primary mirror 6 is concave solar heat collecting mirror, and secondary mirror 7 is convex mirror, and prism 8 is right-angle prism, and sampling thief 3 is main wave sampler, and counter 4 is range counter, and detector 5 is sounder.
Scanning prism rotates under the drive of scan module, and meanwhile, also along with scanning prism synchronous axial system, synchronous trigger pulse is sent in the electronic system such as laser controller and laser acquisition scrambler.When scanning prism is in the some field ranges in nadir direction, laser instrument is output laser pulse under the triggering of controller, and detection circuit is reached certain duty by synchronized-pulse control.Emission Lasers Shu Shouxian arrives prism through turning mirror, again through scanning prism arrival point Area Objects, then the backscattering echo of terrain object arrives receiving telescope primary mirror by scanning prism, and last telescope secondary mirror is echo pulse signal beams converge to sounder obtaining terrain object.The effect of turning mirror allows most of energy of Emission Lasers bundle reflex on prism, and allow number of poles energy transmission in main ripple sampled detector, to obtain the main wave impulse of Emission Lasers.The main wave impulse of Emission Lasers and ground return pulse are all received by range counter, thus achieve airborne scanning laser ranging.
The airborne scanning laser ranging system that the utility model provides adds optical prism, condenser in traditional laser range finder, by the adjustment of optical system, improve the precision of range measurement system and the stability of system, ensure that the properties of range finding when high-speed motion.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection domain of the present utility model.
Claims (4)
1. an airborne scanning laser ranging system, it is characterized in that: described laser distance measuring system comprises laser instrument (1), sampling thief (3), counter (4), detector (5), primary mirror (6), prism (8), scanning prism (9), scan module (10) and scrambler (11), turning mirror (2) is provided with between described laser instrument (1) and sampling thief (3), the light beam that laser instrument (1) sends road after turning mirror (2) arrives target through prism (8), another road arrives detector (5) after oversampler (3) sum counter (4), the light beam that objective emission returns through scanning prism (9) laggard through primary mirror (6) reflection after after secondary mirror (7), arrive detector (5).
2. airborne scanning laser ranging system according to claim 1, is characterized in that: described sampling thief (3) is main wave sampler.
3. airborne scanning laser ranging system according to claim 2, is characterized in that: described counter (4) is range counter.
4. airborne scanning laser ranging system according to claim 1, is characterized in that: described detector (5) is sounder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347013.1U CN204269826U (en) | 2014-06-21 | 2014-06-21 | Airborne scanning laser ranging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347013.1U CN204269826U (en) | 2014-06-21 | 2014-06-21 | Airborne scanning laser ranging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204269826U true CN204269826U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420347013.1U Expired - Fee Related CN204269826U (en) | 2014-06-21 | 2014-06-21 | Airborne scanning laser ranging system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204269826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044703A (en) * | 2015-06-01 | 2015-11-11 | 中国工程物理研究院激光聚变研究中心 | Laser range finding optical system and dominant wave signal sampling method thereof |
-
2014
- 2014-06-21 CN CN201420347013.1U patent/CN204269826U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044703A (en) * | 2015-06-01 | 2015-11-11 | 中国工程物理研究院激光聚变研究中心 | Laser range finding optical system and dominant wave signal sampling method thereof |
| CN105044703B (en) * | 2015-06-01 | 2018-06-01 | 中国工程物理研究院激光聚变研究中心 | A kind of laser ranging optical system and its main ripple signal sampling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI DUNJIE ELECTRONIC + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XIANGSHAN XINGQI ELECTRIC APPLIANCE SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20150625 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150625 Address after: 201713, room 493, zone 4, zone 98, Lane 901, Zhujiajue Road, Zhenkang, Qingpu, Shanghai, Patentee after: SHANGHAI DUNJIE ELECTRONIC & TECHNOLOGY CO., LTD. Address before: In the village of new town 315700 Zhejiang County of Xiangshan Province Patentee before: Xiangshan Xingqi Electric Appliance Science and Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |