Two-dimensional scanning imaging of a dual-pulse coherent system

Area of Science:

• Optical Engineering
• Remote Sensing
• Signal Processing

Background:

• Traditional single-point detection methods in coherent systems have limitations.
• Environmental interference can degrade imaging performance.
• Need for advanced imaging techniques for high-resolution target detection.

Purpose of the Study:

• To propose and simulate a dual-pulse coherent scanning imaging technology.
• To develop a simulation method incorporating atmospheric transmission.
• To evaluate the system's performance in terms of resolution, accuracy, and interference resistance.

Main Methods:

• Developed a simulation method based on dual-pulse coherent system detection theory and atmospheric transmission models.
• Implemented Hilbert transform for signal phase demodulation.
• Utilized surface element subdivision, cubic Bézier interpolation, and heat map principles for image reconstruction.

Main Results:

• Generated dual-pulse scanning intensity, depth, and frequency-shift images.
• Demonstrated the system's ability to resist environmental interference.
• Achieved millimeter-level ranging accuracy and high-resolution imaging with enhanced details.

Conclusions:

• The dual-pulse coherent scanning imaging system overcomes traditional detection drawbacks.
• The developed imaging algorithm accurately reconstructs spatial information.
• This research provides a foundation for advanced high-resolution LiDAR systems.