Atmospheric Scatter Models

Atmospheric Scatter Models

Eritek has developed and validated hard surface and atmospheric scatter models.  Continued development of additional capabilities and features to these models is currently funded under a classified Government contract

The Matlab-based atmospheric scatter model generates radiometrically accurate frames of the light returned from Mie scatter of aerosols (and Rayleigh molecular scatter) from an optical beam. The model also handles polarization of the light from the transmitter to the sensor.  The user defines a transmitted beam direction and locates the camera anywhere in 3D space and pointed in any direction.  The created simulated scene accurately represents the field-of-view seen by the sensor.  The camera characteristics, sensor characteristics and bandpass filter are also defined.  The user inputs the atmospheric conditions to be modeled which consists of the concentrations of several aerosol particle sizes along with their complex indices of refraction and the humidity of the air for water vapor absorption.  The program also generates phase functions for each of the particle types providing insight into which particles dominate the scatter for various configurations.

These models have been validated over the last several years under various configurations (ranges, times of day, weather conditions, etc.) with several field tests using a computer automated LabView camera collection and analysis program.