Development Progress of Ocean Color Sensor Based on UAV : Design and Performance of TMA Optical System

Abstract

Coastal ocean environment monitoring is one of the attractive research field in the remote sensing. Monitoring techniques have been developed with using various instruments. Recently, for overcoming the limitations of field surveys and satellite sensors, an unmanned aerial vehicle (UAV) based sensor is being magnified as a new coastal ocean remote sensing instrument. In the Korea Ocean Satellite Center (KOSC), after launcing the Geostationary Ocean Color Imager (GOCI), the first optical sensor in the geostationary orbit, field survey and UAV monitoring are focusing on the data calibration and validation assignment. In the part of coastal ocean monitoring, a new UAV based sensor has been developed as two type of optical system. One is for multi-channel sensor, and the other is for hyperspectral sensor. In this paper, we deal with a fore-optics for these two types of sensors. This fore-optics is consist of three mirrors and one folding mirror which the entrance pupil diameter is 70mm and effective focal length is 350mm. The optical performance is expected under 1/15λ as a RMS wavefront error. This design will be assembled in this year and the performance test will be performed.llite sensors, an unmanned aerial vehicle (UAV) based sensor is being magnified as a new coastal ocean remote sensing instrument. In the Korea Ocean Satellite Center (KOSC), after launcing the Geostationary Ocean Color Imager (GOCI), the first optical sensor in the geostationary orbit, field survey and UAV monitoring are focusing on the data calibration and validation assignment. In the part of coastal ocean monitoring, a new UAV based sensor has been developed as two type of optical system. One is for multi-channel sensor, and the other is for hyperspectral sensor. In this paper, we deal with a fore-optics for these two types of sensors. This fore-optics is consist of three mirrors and one folding mirror which the entrance pupil diameter is 70mm and effective focal length is 350mm. The optical performance is expected under 1/15λ as a RMS wavefront error. This design will be assembled in this year and the performance test will be performed.