Rutgers University MS 552 - Lectures 1 and 2: Satellite orbits and Measurement Geometry (18 pages)

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Lectures 1 and 2: Satellite orbits and Measurement Geometry



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Lectures 1 and 2: Satellite orbits and Measurement Geometry

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Pages:
18
School:
Rutgers University- The State University of New Jersey
Course:
Ms 552 - Remote Sensing Ocean & Atmosphere

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11 670 451 16 712 552 Remote Sensing Ocean Atmosphere John Wilkin SST John Wilkin 609 630 0559 jwilkin rutgers edu IMCS Room 214C Lectures 1 and 2 Satellite orbits and Measurement Geometry Satellite Remote Sensing Systems The flow of information from land ice and ocean surface to satellite to user depends on features of the Earth surface phenomena the atmosphere and the satellite observing system 1 ocean and land phenomena affect color temperature roughness albedo emissivity terrain vegetation canopy wave height sea level 2 water land leaving signal WLR water leaving radiance and land surface reflectivity can depend on relative position of Sun and satellite therefore time of day and field of view affect signal 3 satellite sensor the observation may be from a passive or active system 11 670 451 16 712 552 Remote Sensing Ocean Atmosphere John Wilkin SST measurement may be an image or point wise data scan geometry depends on satellite trajectory remote sensing instruments are not in physical contact with the phenomena under investigation properties are inferred from the received radiation 4 field of view and ground track sampling frequency depend on orbital period trajectory and altitude 5 orbit determination and satellite pointing information determine the geographic location of observation time place averaging period The range to data may be the observation of interest Satellite position Critical to several aspects of the data set acquired by the sensor Sub satellite ground track and pointing data coordinates Altitude and field of view FOV resolution errors atmospheric interference sun satellite angle illumination of land sea surface satellite velocity and sensor image forming and scan pattern signal to noise repeat period repeat sampling interval for timevarying phenomena Operational issues Higher altitude more energy required from launch vehicle less drag more stable orbit On orbit and getting to orbit don t smack into anything else Sun satellite angle affects



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