RS lecture3.pdf


Aperçu du fichier PDF rs-lecture3.pdf

Page 12314




Aperçu texte


11/19/2012

Outline
Satellite-based Systems LANDSAT & SPOT



Introduction



Spacecraft



Orbit



Instruments

Introduction

Introduction (cont)



Film vs. digital capture



EMR at sensor is recorded as analog electrical signal



Film products vs. digital images



Analog signal is converted to digital – quantized



A i l platforms
Aerial
l tf
vs. satellites
t llit



Image data collected





Wide variety of satellite systems





Commercial and government
Platforms
Resolution – spectral, spatial,radiometric, temporal
Applications





Aircraft – film
Satellite system - transmitted to receiving station

Raw data are generally corrected for systematic
geometric/radiometric distortions
Additional processing

1