Receiver and transmitter design criteria in coherent Doppler wind lidar

A. Masdea; G. Benedetti-Michelangeli; Alberto Cosentino

doi:10.1117/12.195862

9 December 1994 Receiver and transmitter design criteria in coherent Doppler wind lidar

A. Masdea, G. Benedetti-Michelangeli, Alberto Cosentino

Proceedings Volume 2310, Lidar Techniques for Remote Sensing; (1994) https://doi.org/10.1117/12.195862
Event: Satellite Remote Sensing, 1994, Rome, Italy

Abstract

In this paper an overview is given of some of the problems to be faced and the approaches to their possible solutions, in the design of a Doppler wind lidar. The emphasis is devoted to the causes of degradation of the heterodyne efficiency and to the line purity requirements for the local oscillator. Both the above aspects directly influence the signal to noise ratio and, as a consequence, the performance of the system. In particular, the first aspect refers to the number of speckles, to the alignment required between signal and local oscillator and to the beams matching characteristics in terms of wavefront and polarization; the second refers to the relative intensity and phase noise of the local oscillator and to the constraints in terms of its power level and in the position of the intermediate frequency stage. Although the receiver design characteristics are responsible for the system sensitivity, in the heterodyne system there are some direct links to the transmitter design specifications like the divergence and the tunability, that must be evaluated for the optimization of the overall system performance. For this reason a few aspects of the transmitter specifications are evidenced, in order to obtain a good trade-off between performance and real feasibility. A few suggestions are given in order to potentially improve the performance of a spaceborne Doppler wind lidar, considering that the technological impact on the system is at the boundary of the feasibility.

Citation Download Citation

A. Masdea, G. Benedetti-Michelangeli, and Alberto Cosentino "Receiver and transmitter design criteria in coherent Doppler wind lidar", Proc. SPIE 2310, Lidar Techniques for Remote Sensing, (9 December 1994); https://doi.org/10.1117/12.195862

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