TOpography from Reflectometric Measurements:an Experiment from the Stratosphere
The REXUS/BEXUS programme allows students from universities and higher education colleges across Europe to carry out scientific and technological experiments on research rockets and balloons. Each year, two rockets and two balloons are launched, carrying up to 20 experiments designed and built by student teams.
The Global Positioning System (GPS) was first conceived and implemented for navigation purposes, but it has also been used for Earth Observation. Recently, new applications explore the possibility to use the GPS signals scattered off the Earth’s surface and sensed by an airborne or spaceborne receiver in a bistatic radar geometry, as a means of performing altimetry and scatterometry. At present, the ultimate influence of the different GNSS‐R (Global Navigation Satellite Systems Reflectometry) parameters in the precision and accuracy of the altimetric products is still being analyzing. The impact of different noise sources as well as the theoretical height precision expectations and the corrections of different bias terms must be correlated with results obtained in a real scenario. The main goal of this experiment is to test PYCARO (P(Y) & C/A ReflectOmeter). PYCARO is a new reflectometer developed at UPC (Universitat Politècnica de Catalunya‐Barcelona Tech), which takes full advantage of the latest developments in GNSS technology.