REQUIRED ENERGY FOR A LASER-RADAR SYSTEM INCORPORATING A FIBER AMPLIFIER OR AN AVALANCHE PHOTODIODE

被引：34

作者：

OVERBECK, JA ^{[1
]}

SALISBURY, MS ^{[1
]}

MARK, MB ^{[1
]}

WATSON, EA ^{[1
]}

机构：

[1] USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433

来源：

APPLIED OPTICS | 1995年 / 34卷 / 33期

关键词：

FIBER AMPLIFIERS; AVALANCHE PHOTODIODE; IMAGING; LASER RADAR;

D O I：

10.1364/AO.34.007724

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The transmitted energy required for an airborne laser radar system to be able to image a target at 20 km is investigated. Because direct detection is being considered, two methods of enhancing the received signal are discussed: (1) using an avalanche photodiode (APD) as the detector and (2) using a commercial fiber amplifier as a preamplifier before a photodetector. For this analysis a specified signal-to-noise ratio was used in conjunction with the radar range equation, which includes the effects of atmospheric transmission and turbulence. Theoretical analysis reveals that a system with a fiber amplifier performs nearly the same as a system incorporating an APD.

引用

页码：7724 / 7730

页数：7

共 8 条

[1]

ANDERSON G, 1992, FASCODE VERSION GEO

[2]

Jelalian A.V., 1992, LASER RADAR SYSTEMS, P3

[3] NOISE CHARACTERIZATION OF A NEODYMIUM-DOPED FLUORIDE FIBER AMPLIFIER AND ITS PERFORMANCE IN A 2.4 GB S SYSTEM [J].