Mechanical design and thermal analysis of a 12U CubeSat MTCW lidar based optical measurement system for littoral ocean dynamics

Guentchev, George; Bayer, Mustafa Mert; Li, Xun; Boyraz, Özdal

doi:10.1117/12.2597709

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…Jitter-induced pointing errors of less than 2 arcsec were reported. Relatively low disturbance frequencies were chosen, where order-of-magnitude or greater frequencies are common for an ADCS system [79]. The coarse pointing system consumed up to 5 W of electric power and weighed 280 g [80].…”

Section: Piezo-stack Stagementioning

confidence: 99%

A Review of Mechanical Fine-Pointing Actuators for Free-Space Optical Communication

Milaševičius,

Mačiulis

2023

Aerospace

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This paper presents a state-of-the-art overview of fine beam steering mechanisms for free-space optical communication on satellites. Precise beam pointing is a critical task for the successful operation of free-space optical communication systems. Based on past research and ongoing projects, the use of fast steering mirrors (FSMs) is still the most popular solution for free-space optical communication applications. Although a variety of commercial off-the-shelf (COTS) FSM solutions exist, there is limited publicly available data on these solutions in the space environment. Three main actuation principles are considered (electro-static force actuated, magnetic force actuated, piezo-effect actuated) and reviewed using available data from past space missions. The article describes the most important criteria in the choice of a fine beam steering solution for free-space optical communication in space.

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Section: Piezo-stack Stagementioning

confidence: 99%

A Review of Mechanical Fine-Pointing Actuators for Free-Space Optical Communication

Milaševičius,

Mačiulis

2023

Aerospace

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Demonstration of Optical Clock-Free Localization and Navigation (CLAN)

Bayer,

Atalar,

et al. 2023

J. Lightwave Technol.

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Single-shot ranging and velocimetry with a CW lidar far beyond the coherence length of the CW laser

Bayer

Guentchev

et al. 2021

Opt. Express

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The spectral linewidth of the continuous-wave (CW) lasers is one of the key limitations on the coherent lidar systems, which defines the maximum detection range. Furthermore, precise phase or frequency sweeping requirements are a deterrent in many applications. Here, we present the Phase-Based Multi-Tone Continuous Wave (PB-MTCW) lidar measurement technique that eliminates the necessity of using high coherence laser sources as well as any form of phase or frequency sweeping while employing coherent detection. In particular, we modulate a CW laser source with multiple radio-frequency (RF) tones to generate optical sidebands. Then, we utilize the relative phase variations between the sidebands that are free from laser phase noise to calculate the target distance via post-processing and triangulation algorithms. We prove that the PB-MTCW technique is capable of performing single-shot ranging and velocimetry measurements at more than 500× the coherence length of a CW laser in a benchtop experimental demonstration. Overall, precise phase or frequency sweeping requirements and the spectral linewidth of CW lasers, which defines the maximum detection range, are the key limitations of long-distance coherent lidar systems. The proposed approach overcomes these limitations and enables single-shot ranging and velocimetry measurements, especially for long-range applications such as spacecraft and airborne coherent lidars.

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Mechanical design and thermal analysis of a 12U CubeSat MTCW lidar based optical measurement system for littoral ocean dynamics

Cited by 4 publications

References 6 publications

A Review of Mechanical Fine-Pointing Actuators for Free-Space Optical Communication

A Review of Mechanical Fine-Pointing Actuators for Free-Space Optical Communication

Demonstration of Optical Clock-Free Localization and Navigation (CLAN)

Single-shot ranging and velocimetry with a CW lidar far beyond the coherence length of the CW laser

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