Spaceborne laser bathymetry

We want to measure water depth and chlorophyll content on coastal areas from satellite. This should be done using a green laser, which partly is transmitted on the sea surface and partly reflected. We want thereby to detect two return signals by help from a avalanche photodiode. From these two signals, we can determine the depth down to around 70 metres. We think our project should participate in "grøn dyst" because it would be very helpful information for a lot of marine biologist, and not least help ships to navigate through shallow water areas