Accession Number:

ADA285851

Title:

Backscat Lidar Simulation Version 4.0: Technical Documentation and Users Guide

Descriptive Note:

Technical rept.

Corporate Author:

SPARTA INC LEXINGTON MA

Report Date:

1994-06-10

Pagination or Media Count:

148.0

Abstract:

SPARTAs BACKSCAT software package simulates the performance of lidars for remote sensing and other atmospheric applications. The package accommodates a wide range of lidar systems, viewing scenarios, and atmospheric conditions, plus it contains a user-friendly menu interface system for specifying input parameters. This report gives technical documentation and a Users Guide for BACKSCAT Version 4.0. In this effort, comprehensive and versatile signal-to-noise SNR performance models have been introduced into BACKSCAT. The SNR models give performance and range accuracy estimates for direct detection and coherent Doppler lidar systems, plus estimates of the wind speed accuracy for coherent Doppler systems. The models contain all important noise sources inherent in the detection process and allow the user to select from built-in detectors, as well as define their own detector specifications. In response to the user community, five water clouds have been added to BACKSCAT and they can be clicked-on automatically as built-in cloud models. BACKSCAT version 4.0 also contains an auxiliary software package, MABS, that estimates the molecular absorption profile for a lidar wavelength. MABS generates output that can be used in a simulation. Because MABS performs a broadband calculation, it is not intended to be a complete treatment of the molecular absorption problem. Finally, methods of handling the increased size of the BACKSCAT package have been developed. Lidar simulation, Signal-to-noise models, Lidar backscatter.

Subject Categories:

  • Computer Programming and Software
  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE