Design and Fabrication of a Simple Sensor For UAS-based Satellite Calibration/Validation

The satellites we have today are built to function in the harsh environment of space and are capable of doing so. However, over time they may begin to gather their information inaccurately. Therefore, the data must be reviewed and checked independently for accuracy and the methods of doing so include uses of unmanned aircraft systems and high flying airplanes such as the NASA ER2. This project includes the design and fabrication of a sensor that would be used to make goniometric measurements and record the intensities of light at a point on the Earth's surface at selected sites. The data collected by the sensor could then be compared to the data of the NASA ER2 to then validate satellite measurement accuracy. Methods of designing and developing the circuit are shown as well as in-depth circuit analysis. The expected results are variations in voltage that the photodiode based sensor records in response to the sensor sensing varying light intensities that occur when measurements are taken at differing angles. This data in accordance with the data of the NASA ER2 will allow for the targeting of specific areas in which satellites measurements can be independently validated.