Study On Short-Range Laser Range Finding

In this paper, according to the error analysis measured by the phase-type laser ranger, put forward the design plan of the phase frequency. Phase locked loop circuit with Negative feedback controlling has been designed through74HC4046to realize auto frequency tracking system, Though measuring phase range with AD8320and using89C51to date processing,the mearured diatance will be presented on the LCD. Its laser distance is15m and accuracy is1mm. This paper will focus on the modulation launching circuit of phase-type laser range finder, and in the last a kind of Single lens has been designed as laser collimator lens based on ZEMAX software.In the last,in this paper,a kind of two-way responsing phase-type laser range finder has been designed through laser range quation and phase-type laser range principle, which long diatance is more than one hunder times than the international trans. The prospects of application is widely in many areas. This design never be found in other literatures.