Do Hyun Hwang

Q) How can we measure sea level height in coastal areas using satellite altimetry?

Height can be determined by measuring the round-trip time of radar pulses from satellites to the surface. Sea level height can be calculated as the height from the sea surface to the Earth's reference ellipsoid. In coastal areas, it is difficult to utilize sea level height data because mixed signals from ocean and land occur, and the influences of tides, atmosphere, and other factors are significant. To overcome this, high-resolution sea level height data processing technologies such as SAR mode altimeters and FF-SAR mode altimeters using the Doppler effect are being developed. Therefore, our team tries to develop altimeter data processing methods suitable for coastal areas by utilizing various modes of altimeter data.

• Processing and analysis of high-resolution satellite altimeter waveform signal data applicable to coastal areas
• Coastal environmental analysis using Chl-a satellite imagery and marine factor data
• Research on sea level height and sea surface temperature variations due to climate change