Measuring atmospheric turbulence along folded paths using a laser-illuminated differential image motion monitor

被引：4

作者：

Hanna, Randall ^{[1
]}

Brown, David M. ^{[1
]}

Brown, Abdrea ^{[1
]}

Baldwin, Kevin ^{[1
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA

来源：

APPLIED OPTICS | 2022年 / 61卷 / 32期

关键词：

Compendex;

D O I：

10.1364/AO.468597

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A laser-illuminated differential image motion monitor (DIMM) is presented that is able to measure the atmos-pheric coherence length r0 along horizontal ground paths. This is accomplished by implementing a mono-static setup in which the transmitter and receiver are co-located and transmit to a retroreflective target. The impact of propagating along a folded path through the same volume of turbulent atmosphere is investigated in detail and the overall impact to angle-of-arrival measurements described. In addition, an outdoor test campaign was conducted to validate the findings by testing two commercial scintillometers and the laser DIMM side by side in both bi-static and mono-static configurations. Both analytical and experimental results show that under certain conditions, folded-path propagation can be treated identically to traditional single-path propagation.(c) 2022 Optica Publishing Group

引用

页码：9646 / 9653

页数：8

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