Ocean color monitoring on the coastal water is still under study because of an incomplete atmospheric correction
over the turbid water like over the coastal water along the China main land. Currently available sensors for science as
MODIS on Terra or Aqua will terminate their service in the near future and the NPOESS Preparatory Project (NPP) will
be the next satellite to support the satellite oceanography on the coastal water. The Tokyo University of Information
Sciences (TUIS) has updated the MODIS receiving system to capture and ingest the Visible/Infrared Imager/Radiometer
Suite (VIIRS) data from NPP, which will be launched in 2008. Data processing software from the Direct Readout
Laboratory (DRL), such as the Real-time Software Telemetry Processing (RT-STPS), Simulcast, and DB algorithms,
will be core programs in our system. VIIRS has seven bands in VIS&NIR, which are for ocean color research. The
spatial resolution is 0.742×0.259 meters at nadir. While the MODIS spatial resolution of the nine ocean color bands is
1000m. The higher spatial resolution MODIS data (250 meters) is used to illustrate the advantage of the higher spatial
resolution remote sensing data, such as data from VIIRS. In this study, we propose to combine the higher spatial
resolution data with the traditional products of chlorophyll-a and sea surface temperature in the low resolution so as to
extract further information on the coastal ocean.
KEYWORDS: LIDAR, Signal processing, Data acquisition, Data processing, Doppler effect, Signal to noise ratio, Data analysis, Backscatter, Optical engineering, Wind measurement
This paper describes the realization of the wind lidar data acquisition system, and a method of denoising signal based on empirical mode decomposition (EMD). The paper proposes a method for raveling out the edge problem that comes with EMD. It has been proved to be a good method for solving the edge problem in analyzing lidar data. We can improve the ratio of signal to noise by using the EMD method three times more than the original's. It has been proved to be better than adjacent averaging in data processing.
By using aerosols as tracers, lidar or laser radar can be applied to study aerosols in the atmosphere that directly or indirectly effect the air quality. The pulsed Nd:YAG lidar system operating at the Ocean Remote Sensing Institute (ORSI), Qingdao, China has been used to get aerosol profiles. The results of the experiments performed on the days with different sky conditions at Qingdao during March-May 2002 indicated significant day-to-day variation in the aerosol profiles. These results are found to be consistent with the aerosol index, which is measured with TOMS (Total Ozone Mapping Spectrometer) and is an index of air quality over a place.
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