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122348

Performance Analysis of Avalanche Photodiode for Direct Detection LADAR Receivers.

Article

Last updated: 04 Jan 2025

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Subjects

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Tags

Electrical Engineering

Abstract

LADAR systems constitute a direct extension of the conventional radar techniques. Because they operate at much shorter wavelengths, LADARs have the unique capability to generate 3D images of objects. These laser systems have many applications in the defense gelds concerning target detection and identification. The extraction of these features depends on the processing algorithms, target properties and 3D images quality. Our scope in this research is to use the Avalanche photodiode as a basic detector in three dimensional imaging LADAR systems and analyze its behavior against different operating conditions. Avalanche photodiode in its linear mode gives good performance only for high count rate of photo-electrons. In the case of low count rates (extremely weak signals), this device must be biased above its breakdown voltage in order to have higher sensitivity. This situation is known in the literature as Geiger-mode operation. This mode of operation suffers from mean primary noise rates in the measured interval. This in turn may cause the detector not respond before receiving the desired signal. When the Avalanche photodiode is biased below its breakdown voltage with highest achievable gain value, and followed by an ultra low noise amplifier, it becomes sensitive to the single photo-electron. This operating mode is called Linear-mode single photon. The operation of the detector in this mode overcomes the drawbacks of the Geiger-mode. Detection and false alarm probabilities are analyzed for each one of these operating situations. 

DOI

10.21608/bfemu.2020.122348

Keywords

Avalanche photodiode, Three-Dimensional Imaging, Direct detection, Ladar

Authors

First Name

Mohamed

Last Name

El_Mashade

MiddleName

-

Affiliation

Professor of Electrical Engineering Department., Faculty of Engineering., Al Azhar University., Nasr City., Cairo., Egypt.

Email

elmashade@yahoo.com

City

Cairo

Orcid

-

First Name

H.

Last Name

Konber

MiddleName

-

Affiliation

Electrical Engineering Department., Faculty of Engineering., Al-Azhar University., Nasr City., Cairo., Egypt.

Email

-

City

Cairo

Orcid

-

First Name

M.

Last Name

Ashour

MiddleName

-

Affiliation

Department of Electrical Engineering., Faculty of Engineering, Al_Azhar University, Nasr City , Cairo, Egypt

Email

-

City

Cairo

Orcid

-

First Name

A.

Last Name

AboElEzz

MiddleName

-

Affiliation

Electrical Engineering Department., Faculty of Engineering., Al-Azhar University., Nasr City., Cairo., Egypt.

Email

-

City

Cairo

Orcid

-

Volume

36

Article Issue

4

Related Issue

17858

Issue Date

2011-12-01

Receive Date

2011-09-19

Publish Date

2020-11-09

Page Start

53

Page End

69

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 36_Issue 4_Pages 53-69.pdf

PDF . 20.9MB

Link

https://bfemu.journals.ekb.eg/article_122348.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=122348

Order

15

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Performance Analysis of Avalanche Photodiode for Direct Detection LADAR Receivers.

Details

Type

Article

Created At

22 Jan 2023