Data acquisition and processing of spaceborne lidar system

Ramakrishna Rao Duggirala; Mohankumar Santhibhavan Vasudevan Pillai; Presennakumar Bhargavan; Muraleedharen Nair Sivarama Pillai; Satyanarayana Malladi

doi:10.1117/12.694026

22 December 2006 Data acquisition and processing of spaceborne lidar system

Ramakrishna Rao Duggirala, Mohankumar Santhibhavan Vasudevan Pillai, Presennakumar Bhargavan, Muraleedharen Nair Sivarama Pillai, Satyanarayana Malladi

Author Affiliations +

Proceedings Volume 6409, Lidar Remote Sensing for Environmental Monitoring VII; 64090Z (2006) https://doi.org/10.1117/12.694026
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

Abstract

This paper discusses the various requirements of data acquisition and processing for Space Borne Lidar (Light Detection and Ranging) system being developed in Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum for the study of aerosols and clouds in the troposphere and lower stratosphere (0-40 km). The lidar system will be housed in a polar orbiting satellite at an altitude of 600 km with a period of approximately 90 minutes providing global coverage. The lidar operates by transmitting a laser pulse down (nadir looking) and receiving the backscatter returns from the atmosphere. The laser source operates at dual wavelengths of 1064 and 532 nm with a pulse repetition rate of 5/10 Hz with energy of 100 mJ. The receiving system consists of a 265 mm Fresnel lens telescope followed by backend optics and detector systems. The data acquisition system uses three channels with two types of photo detectors, namely photo multiplier tube and avalanche photo diode and operate either in analog (current) mode or discrete pulse (photon counting) mode. The data acquisition system has to handle signals of wide dynamic range (4-5 decades) and acquire the backscattered signal intensity with good spatial resolution. The analog channel will receive and digitize the 1064 nm signal with 16 bit resolution and the photon counting channels will count the 532 nm signal upto 200 MHz rate. The data backed up onboard is telemetered down to ground station during periods of visibility of satellite.

Citation Download Citation

Ramakrishna Rao Duggirala, Mohankumar Santhibhavan Vasudevan Pillai, Presennakumar Bhargavan, Muraleedharen Nair Sivarama Pillai, and Satyanarayana Malladi "Data acquisition and processing of spaceborne lidar system", Proc. SPIE 6409, Lidar Remote Sensing for Environmental Monitoring VII, 64090Z (22 December 2006); https://doi.org/10.1117/12.694026

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Data acquisition

LIDAR

Photon counting

Analog electronics

Avalanche photodetectors

Clouds

Satellites

Show All Keywords

Keywords/Phrases

Search In:

Publication Years