PcSenSat was developed for remote sensing applications of passive sensors in the .2-28 um spectral region. PcSenSat is a PC implementation of SENSAT which includes user-friendly input, database features, and screen and hard copy graphics. Typical remote sensing applications of PcSenSat include:
design tool for sensor development mission analysis of sensors under different scenarios and on different platforms, e.g. satellite, airplane, and ground-based comparison with measurements radiometric correction of measurements with respect to atmospheric effects sensitivity analysis of atmospheric and object parameters

Simulation results include radiance, brightness temperature, signal to noise ratio, and target/background contrast as a function of target range, visibility, solar zenith angle, etc. These simulations predict sensor performance over a variety of operating conditions and mission scenarios. In addition, SenSAT performs spectral region optimizing, 'maximizing' for instance, the gray level difference between a target and its background. The model allows the computation of the IR signature of up to 3 homogeneous objects in the instantaneous field of view (IFOV) of the sensor. The model accounts for: SENSOR: Optics: transmittance of optics, spectral filters, clear aperture, focal length Detector: size, IFOV, quantum efficiency, spectral detectivity residual noise electrons, detector saturation electrons, responsivity Electronics: noise equivalent electrical bandwidth, integration time, number of TDI detectors, scan efficiency, electrical efficiency, amplifier/ADC noise, modulation transfer function, detector signal amplification number of quantization levels ATMOSPHERE: LOWTRAN 7 is used for atmospheric transmittance and radiance calculations. Some extensions have been made concerning the ground reflecting surface: surface albedo may depend on wavelength and observation angle diffuse and specular (bidirectional reflectance distribution function) reflection of direct solar radiance surface orientations not necessarily horizontal This version of LOWTRAN, called PcSenTran, retains all the calculation, input, and output functions of Ontar's LOWTRAN7. TARGET: PcSenSat allows up to 3 homogeneous targets in the sensor field of view. The objects are characterized by their area, surface temperature, reflectivity, and emissivity. The emissivity may vary as a function of wavelength and aspect angle. In addition, PcSenSat accepts an emitting radiation source (e.g. a plume) to be entered externally as a target. In this way, special target models can be used. Additional features of PcSenSat Wind dependent sea surface model (Cox-Munk) for solar reflection IR clutter model Library of 24 sensors is included, with the ability for user-defined sensors Library of background/target spectrally varying emissivities is included, with the ability for user defined backgrounds and targets All features and ease of LOWTRAN7 retained Compatible with LOWTRAN7 input databases Hardware/Software Requirements IBM PC 80386 or 80486 compatible computer Math coprocessor chip (80387 or 80486) Minimum of 2.5 MB memory One disk drive and one hard disk (about 4 Mbytes available) Disk Operating System (DOS 2.0 or higher) IBM compatible color board (CGA, EGA, or VGA) and monitor for screen graphics Most graphics dot matrix printers, laser printers, or HP pen plotter for hard copy output

Pricing

PcSenSat for DOS is available for $500. This price is for the software only; there is no customer or technical support available for this particular product.

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