Improving distance imaging accuracy through temporal position correction with phase difference compensation.

Area of Science:

• Optics and Photonics
• Remote Sensing Technologies
• Signal Processing

Background:

• Decoherence effects degrade performance in optical heterodyne detection systems.
• Accurate distance imaging and remote sensing are crucial applications limited by detection fidelity.
• Existing methods often require complex hardware or lack comprehensive solutions for decoherence.

Purpose of the Study:

• To introduce a novel time-domain-based phase compensation method.
• To mitigate decoherence effects in optical heterodyne detection.
• To enhance the accuracy and reliability of remote sensing and distance imaging.

Main Methods:

• Development of a time-domain phase compensation algorithm.
• Numerical simulations to evaluate localization bias and probability distributions.
• Experimental validation using distance imaging at 10 meters.

Main Results:

• Localization bias reduced from 6.56 to 2.85 in simulations.
• Probability of bias values below 2 increased from 21.6% to 70.5% in simulations.
• Distance imaging accuracy at 10m improved to 91.7% within a 10-12m range, a significant enhancement from 2.3%.

Conclusions:

• The proposed phase compensation method effectively reduces localization bias and improves detection accuracy.
• The technique enhances intensity image quality and mitigates decoherence phenomena.
• This hardware-independent method offers a practical solution for improving optical heterodyne detection systems.