Modeling the Thermal Signature of Natural Backgrounds
Abstract
Two measuring stations have been established the purpose being to collect comprehensive databases of thermal signatures of background elements in addition to the prevailing meteorological conditions. The databases have primarily been used as a foundation for the development and validation of models for the simulation of thermal signature. The stations consist of a calibrated thermal camera for radiometric measurements, as well as a number of meteorological sensors - i.e. sensors for recording relevant parameters that influence thermal signature. Both stations are remotely controlled via telephone lines and it is possible to transfer the collected data from the stations. At each measuring site 3-4 thermal images are automatically recorded every 15 minutes and every S minutes over 50 meteorological measurements are performed. The stations have been operating successfully over long periods of time and they have delivered reliable meteorological information and radiometric data. Using this data models for simulation of thermal signatures for natural backgrounds have been developed. In addition the measurements have been used for the verification of a model for vehicles. The background signature model is based on plain one-dimensional heat-flow equations. Applied to three different types of background elements, the RMS-deviations from measured temperatures appear to be less than 1.7 K for periods of several days.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2002
- Accession Number
- ADP023081
Entities
People
- Marius Gamborg
Organizations
- Norwegian Defence Research Establishment