Preliminary DIAL model
Abstract
A unique end-to-end LIDAR sensor model has been developed supporting the concept development stage of the CALIOPE UV DIAL and UV laser-induced-fluorescence (LIF) efforts. The model focuses on preserving the temporal and spectral nature of signals as they pass through the atmosphere, are collected by the optics, detected by the sensor, and processed by the sensor electronics and algorithms. This is done by developing accurate component sub-models with realistic inputs and outputs, as well as internal noise sources and operating parameters. These sub-models are then configured using data-flow diagrams to operate together to reflect the performance of the entire DIAL system. This modeling philosophy allows the developer to have a realistic indication of the nature of signals throughout the system and to design components and processing in a realistic environment. Current component models include atmospheric absorption and scattering losses, plume absorption and scattering losses, background, telescope and optical filter models, PMT (photomultiplier tube) with realistic noise sources, amplifier operation and noise, A/D converter operation, noise and distortion, pulse averaging, and DIAL computation. Preliminary results of the model will be presented indicating the expected model operation depicting the October field test at the NTS spill test facility. Indications will be given concerning near-term upgrades to the model.
- Publication:
-
Presented at the 1994 Caliope Interim Technical Review
- Pub Date:
- 1994
- Bibcode:
- 1994citr.rept...26G
- Keywords:
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- Air Pollution;
- Atmospheric Models;
- Laser Induced Fluorescence;
- Mathematical Models;
- Optical Radar;
- Performance Tests;
- Atmospheric Attenuation;
- Atmospheric Scattering;
- Computer Aided Design;
- Data Flow Analysis;
- Pollution Monitoring;
- Remote Sensing;
- Communications and Radar