Calibration, precision, and efficiency of optical range finders.

Area of Science:

• Optical Engineering
• Signal Processing
• Photodetector Physics

Background:

• Pulsed optical range finders are crucial for precise distance measurements.
• Transmitter pulse waveshape significantly impacts range finder accuracy.
• Understanding photoemission statistics is key to optimizing performance.

Purpose of the Study:

• To analyze how transmitter pulse shape affects pulsed optical range finder properties.
• To derive probability density functions for range delay time.
• To predict system performance metrics based on signal energy and noise parameters.

Main Methods:

• Derivation of probability density functions for range delay time.
• Analysis of calibration bias, random errors, measurement probability, and entropy versus signal energy.
• Experimental validation, including simulation of geodetic satellite conditions.
• Assumption of Poisson-distributed photoemission.

Main Results:

• Theoretical predictions for range finder performance metrics were developed.
• Experimental results showed good agreement with theoretical predictions.
• The Poisson statistics assumption for photoemission was validated under various conditions.

Conclusions:

• The derived theoretical models accurately predict pulsed optical range finder performance.
• Poisson statistics reliably describe photoemission in optical ranging systems.
• Further experimental work can refine the understanding of these systems.