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Closed-loop laser illumination algorithm using return photon counts.

Lanlan Li, Lei Zhou, Ge Ren

|October 26, 2020

Summary

This summary is machine-generated.

This study introduces a triangular-scanning algorithm to precisely estimate laser boresight errors for improved closed-loop laser illumination (CLLI) of non-cooperative targets. The method demonstrates high accuracy and approaches theoretical performance limits.

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Area of Science:

Optical Engineering
Laser Systems
Precision Measurement

Background:

Boresight and jitter are critical pointing errors in laser illumination systems, impacting accuracy.
Accurate pointing is essential for effective laser illumination, especially for non-cooperative targets.

Purpose of the Study:

To propose and validate a novel triangular-scanning algorithm for boresight estimation.
To realize closed-loop laser illumination (CLLI) for non-cooperative targets.
To analyze the performance of the proposed algorithm against theoretical limits.

Main Methods:

A three-step maximum boresight estimation and laser beam deflection procedure.
Development of a closed-loop laser illumination (CLLI) system.
Monte Carlo simulations to evaluate algorithm performance and compare with Cramer-Rao lower bounds (CRLB).

Main Results:

The triangular-scanning algorithm accurately estimates boresight direction.
The developed CLLI system effectively illuminates non-cooperative targets.
Simulation results closely match theoretical estimations and approximate CRLB.

Conclusions:

The triangular-scanning algorithm is effective for precise boresight estimation.
CLLI for non-cooperative targets is achievable with the proposed method.
The algorithm's performance is validated and approaches theoretical lower bounds.