| 激光测距森林罗盘仪的研究 |
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| 引用本文： | 赵彤堂,赵绥堂.激光测距森林罗盘仪的研究[J].林业科学,1993,29(3):266-270. |
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| 作者姓名： | 赵彤堂 赵绥堂 |
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| 作者单位： | 吉林省林业科学研究所 长春130021(赵彤堂)，北京大学 北京100871(赵绥堂) |
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| 摘 要： | 使用光学罗盘仪和测绳进行森林勘测存在着诸多弊端。为此,有必要研制一种体积小、重量轻、操作简便,而且造价低,能胜任森林勘测的新型测量仪器。一、原理氦氖激光器发射出的波长为633nm的红色可见光,在一定蔽荫条件下,人眼可以分辨,尤其在逆光观察时更为清晰。试验证明,在测量环境照度低于50Lx便可观察到光束或光斑。利用氦氖激光器把罗盘仪望远镜的视线用红色光束描述出来,罗盘方位角决定的方向就落实为现地的可见测线。这样,持测杆者就可以在可见测线上选定测站,砍线员就可以在红色光斑的指示下砍伐测线,从而使以往的盲目被动作业变为有目的的主动作业。若将激光器发射出的红色光束分为具有一定夹角的两束光,在测量空间内这两束红
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| 关 键 词： | 激光 罗盘仪 森林勘测 |
A STUDY ON FOREST COMPASS FOR MEASURING DISTANCE USING LASER |
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| Zhao Tongtang.A STUDY ON FOREST COMPASS FOR MEASURING DISTANCE USING LASER[J].Scientia Silvae Sinicae,1993,29(3):266-270. |
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| Authors: | Zhao Tongtang |
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| Abstract: | A new measuring tool is developed by appling laser technique for forest survey, which has three main functions i. e. visible light direction guidan-ce, measuring distance and horizontal distance measuring by slope measuring.This compass is consisted of two parts, a projecting system and a receivingsystem. The red laser beam is shot from the projecting system, which canset up the visible direction line of fixed position in the forest surroundings,and then the operators can fell trees along the direction. The laser beam isseparated into two beams by a semi-wedge lens, there is a fixed angle bet-ween the two beams, the actual value of measured distance will be showndirectly on the receiving pole. The reading will be the value of a inclinedistance when the receiving pole is vertical to the horizontal plane, and thevalue of horizontal distance when it is vertical to the slope plane. From nowon, the horizontal distance of a slope plane can be obtained directly withoutany conversion of incline distance sin he receiving pole can be vertical to incline plane with the help of lens hood and orientation device. |
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| Keywords: | Laser Compass Forest servey |
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