RESULTS
We completed the first order of digital signal processing and the FFT of the signal was taken. Figure 6 shows the preliminary results of this.


Figure 7: The air over snow interface and the snow over ice interface


The figure above shows that the radar is clearly capable of resolving the air/snow interface and the snow ice interface. We can determine the thickness of the snow by taking the difference of the two interfaces.

Figure 8: The amplitude and magnitude of scope 386

Figure 8 shows scope 386, this sample number is located in Figure 7 between 380-400. The example for this is shown in Figure 8, the return from the air snow interface appears at approximately 212.5 meters, and the return from the snow ice interface is at approximately 212.8 . The thickness of the snow at this spot is 3 centimeters.

CONCLUSIONS
The University of Kansas developed an ultra-wideband radar that has a frequency range from 2 to 8 GHz. This system was use to collect airborne measurements for determining the thickness of snow over sea ice in Alaska. The results from these experiments show that we can measure snow thickness with (3 cm) with this radar. The airborne radar help to validate the Advanced Microwave Scanning Radiometer retrievals, it will also provide provides a higher resolution than currently possible from satellites.