Sounding of the environment by means of the un-impulse of the low-power continuous source

Yury Polkanov

doi:10.1117/12.738737

26 September 2007 Sounding of the environment by means of the un-impulse of the low-power continuous source

Yury Polkanov

Proceedings Volume 6681, Lidar Remote Sensing for Environmental Monitoring VIII; 668111 (2007) https://doi.org/10.1117/12.738737
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

At the present time laser systems for atmospheric remote sensing assume the use of powerful pulse lasers in most cases and a signal backscattered from a medium is recorded with a certain step digitization corresponding to the required spatial resolution. Moreover a distance extension of sounding requires essentially disproportionate increase in radiation power and use of complex methods to extend a dynamic range of receiving devices; it also causes the multiple scattering effects which can be difficult to take into account. Qualitatively new approach which allows many by-effects to be avoided is proposed. The approach is based on use of a low-power radiation source (for example, white light) with specified gating, when time of source radiation interruption is equal to a pulse duration of an ordinary lidar (about 10^-8 c), and frequency corresponds to a propagation time of radiation in a zone where the multiple scattering can be neglected. Digitization of the recorded backscattered signal can produce by ordinary digital systems as a discrete readout of signals with the same duration. However to increase a reconstruction accuracy for the medium characteristics we propose to reconstruct the average values of these characteristics over the parts commensurable with the sounding path length. The algorithm proposes creation of recording system with corresponding gating for incoming signal. Estimations1 have shown that the measurements with accuracy of ~ 1...10 % become possible in the single scattering over the wide range of atmospheric conditions and for safety source power up to 10-20 watt. Moreover, a linear operating mode for photoelectric multiplier can be easily provided and measurements can be carried out in the daytime with the specified accuracy. Such an approach allows us to increase a precision of measurements and can be applied in various areas from the lidar and radar systems to biological and medical devices.

Citation Download Citation

Yury Polkanov "Sounding of the environment by means of the un-impulse of the low-power continuous source", Proc. SPIE 6681, Lidar Remote Sensing for Environmental Monitoring VIII, 668111 (26 September 2007); https://doi.org/10.1117/12.738737

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
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

LIDAR

Image registration

Dispersion

Multiple scattering

Pulsed laser operation

Environmental sensing

Remote sensing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years