Instruments
Active Optical
Instrument
The Instrument Module is in charge of simulating the sensor behaviour, from the signal acquisition, instrument noises and analog-to-digital conversion together.
Accordingly, the architecture for active optical instrument the following Blocks are
- The Laser Transmitter Block generates the laser pulse to propagate into the atmosphere down to the surface. The emitted wavelength drives the signal strength through atmospheric and surface scattering properties and atmospheric transmission.
- The Spatial Block performs the spatial resampling along the LOS down to the surface taking into account spatial non-uniformity sources.
- The Spectral Block is in charge of resampling from the finer working resolution of the scene generator to the spectral configuration of the sensor. The key component is the Front-end optics.
- The Radiometric Block converts the radiance into digital numbers. It also introduces the radiometric errors Photonic Noise, PRNU, DSNU and defective pixels.