الفهرس 
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Abstract
This thesis describes the design and development of TOF (time-of-flight) laser range finder techniques for industrial measurement applications in the measurement range of zero to a 10-20 km to diffusely reflecting targets. The main goal is design and build a TOF laser rangefinder and with at least 0.6 mrad divergence in order to get the echo signal to count the acquisition time and calculate the distance on the display module with accuracy up to ±5m. A TOF laser range finder consists of a laser transmitter, receiver and range counter , a power supply , control unit and the optical assembly for the transmitter and receiver. In order to improve single-shot precision the slew-rate of the measurement pulse should be increased, so the optical pulse of the laser transmitter should be narrower and more powerful and the bandwidth of the receiver should be higher without increasing the noise level too much. In the transmitter a Q-switch Nd:YAG laser was designed and build to short and powerful pulses for the solid state laser. Using a laser cavity consists of the Nd-YAG rod and Xenon flashlamp generate energy up to 10 J which generate output energy between (0.7–1.5 MW) at 1064 nm wavelength . The transmitted beam generates and transmitted into the target and part of the beam converted to the detector to generate the start signal to start the counter processes. In the receiver, the reflected beam passed through the optical assembly to the photodiode to stop the range count. The time delay between the laser emitting a pulse and detection of reflected radiation from distinct objects and to present this data as a range in meters in form suitable for the display unit. Using a simulation test station to validate our system to insure the design is correct and the calculation of the system valid to measure distance up to 10 km . In our design it possible to use the transmitter in other application using its compact dimension and power supply mobility by using batteries and also for the narrow angle of the output transmitter with the power reaches distance up to 10-15 km.