Distance measuring device

Abstract

Abstract PURPOSE:To improve the long distance distance measuring performance, while securing the safety to eyes by adding synchronously a receiving video whenever a laser having low peak power and a high repeat rate is emitted and improving the S/N. CONSTITUTION:A high repeat rate laser transmitter 15 has a repeat rate of about 1Kpps, but on the other hand, its peak power is such low power as about 10kW. In this state, laser video data 17 obtained by bringing a laser video signal 10 reflected by a target to A/D conversion 16 is written if a first memory 18 in a real time at every start pulse 5. Also, before the next emitted pulse, past data of the memory 18 and a second memory 19 are added 22, and stored in the memory 19 again. Subsequently, an (n) field portion is added by the number of times determined by a timing circuit 27, a read-out pulse 26 is outputted to a switching circuit 23 and added data 24 of the memory 19 is inputted to a deciding circuit 25, address data for showing an hourly position of the data exceeding a threshold is detected, and it is outputted as range data.

Inventors

• 👤 Hiroshi Higuchi
• 👤 博 樋口

Bibliographic Details