Receiving Optical Channel of a Laser Locator with the Rangefinder and Spectroanalyzer Functions

Abstract

The paper considers a possibility of creating an optical system for the receiving channel of a laser locator operating in a wide spectral range with high resolution. To minimize the influence of chromatic aberrations and other types of aberrations on the image quality, a modification of the Gregory mirror system (Korsch scheme) is selected with the aspherical main, secondary and third mirrors. It provides high optical performance in a wide spectral range. Design parameters, and optical characteristics are computed. The optical system image quality is assessed, it satisfies the task set, and ensures obtaining the scattering spot dimensions in the image plane close to the diffraction limit. The resulting scheme optimization makes it possible to reduce significantly values of the main aberrations in the optical system, i.e., field curvature and distortion. High image quality and optical characteristics of the resulting optical system allow expanding the laser locator functions in assessing the temperature of the aircraft flame by analyzing the Stokes and anti-Stokes components of radiation scattered from the flame in the spectral ranges of vibrational transitions of the main hydrocarbons contained in the aviation fuel. The obtained temperature values are the additional parameters for identifying an object when detected by the onboard laser locator

Please cite this article in English as:

Anikyev A.A., Baryshnikov N.V., Yakubovskiy S.V. Receiving optical channel of a laser locator with the rangefinder and spectroanalyzer functions. Herald of the Bauman Moscow State Technical University, Series Instrument Engineering, 2025, no. 3 (152), pp. 4--26 (in Russ.). EDN: SACDSP

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