Remote Sensing Image Analysis - PUC RIOraul/RS/ELE2769_00_Introduction.pdf · Remote Sensing...
Transcript of Remote Sensing Image Analysis - PUC RIOraul/RS/ELE2769_00_Introduction.pdf · Remote Sensing...
Remote Sensing Definitions
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“Sensoriamento Remoto é a ciência e a arte de obter informação sobre um objeto, área ou fenômeno através da análise de dados adquiridos por um sensor que não está em contato direto com o objeto, área ou fenômeno sob investigação.”
“Remote Sensing is the science and art of obtaining and interpreting information about an object, area, or phenomenon through the analysis of data acquired by a sensor that is not in contact with the object, area, or phenomenon being observed.”
T. Lillesand e R. W. Kiefer, 1994
Remote Sensing Definitions
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“The use of electromagnetic radiation sensors to record images of the environment, which can be interpreted to yield useful information'
“The measurement and analysis of electromagnetic radiation reflected from, transmitted through, or absorbed and scattered by the atmosphere, the hydrosphere and by material at or near the land surface, for the purpose of understanding and managing the Earth’s resources and environment.
L. Morley, 1986
P. J. Curran, 1985
Remote Sensing Applications
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Automatic Interpretation of Remote Sensing Images
rocha mangueurbano floresta solo águacampo
Remote Sensing Applications
Change Detection and Monitoring
No change
Low Impact
Medium Impact
High Impact
Very high impact
Water
Wet Land
Poor Vegetation
Moderate Vegetation
1998 Classification 2002 Classification Change
Settlement
Orchard
Dry Agriculture Land
Bare Land
Wet Agriculture Land
Remote Sensing Applications
Change Detection and Monitoring
Deforestation in the Amazon Forest (Rondônia)
1975 1989 2001
Imagens Landsat
Remote Sensing History
Current remote sensing technology derives from the development of photography (phos – light, graphien – writing), aviation and satellite technologies.
Joseph Nicephore Niépce (~1820)
Remote Sensing History
Current remote sensing technology derives from the development of photography (phos – light, graphien – writing), aviation and satellite technologies.
Flyer II - Irmãos Wright (1903)
14 Bis – Santos-Dumont (1906)
Remote Sensing History
Current remote sensing technology derives from the development of photography (phos – light, graphien – writing), aviation and satellite technologies.
V2 (1942) Sputnik-1 (1957)Sputnik-2 (1957)
Remote Sensing History
Current remote sensing technology derives from the development of photography (phos – light, graphien – writing), aviation and satellite technologies.
Gasper Felix Tournachon - Nadar (1858)
Remote Sensing History
First image from a rocket (1946)
Altitude of 65 miles by a 35-millimeter motion picture
camera riding on aV-2 missile launched from the
White Sands Missile Range (New Mexico)
Current Earth Observation (EO) SystemsPassive (Optical) Systems
Do not have their own source of radiation, so they depend on solar radiation as the energy to illuminate/capture the scene.
They measure the reflected solar radiation and/or the radiation emitted by the targets.
Current Earth Observation (EO) SystemsActive Systems
Have their own source of electromagnetic radiation, usually working in narrow bands of the electromagnetic spectrum (microwave).
Current Earth Observation (EO) SystemsActive Systems
Have their own source of electromagnetic radiation, usually working in narrow bands of the electromagnetic spectrum (microwave).
Current Earth Observation (EO) SystemsUnmanned Aerial Vehicle (UAV)
CTA/IPqM/CTEx/AVIBRAS
Marinha do Brasil
Exército Brasileiro
Current Earth Observation (EO) SystemsPassive (Optical) Systems
SPOT 1 (1986-2003)SPOT 2 (1990-2009)SPOT 3 (1993-1997)SPOT 5 (2002-2011)SPOT 6 (2012)SPOT 7 (2015)
SPOT 6/7 (1.5; 5m)
IKONOS2 March 2008 (late Summer) IKONOS2 June 2009 (late Autumn)
Solar Elevation 57,3° Off-nadir 13,0° Solar Elevation 37,8° Off-nadir 14,5°
Current Earth Observation (EO) SystemsPassive (Optical) Systems
Quickbird-2 (0.61; 2.4m)
(2001-2015)
Current Earth Observation (EO) SystemsPassive (Optical) Systems
WorldView 1,2 (0.46; 1.84m)
(2007, 2009)
Current Earth Observation (EO) SystemsPassive (Optical) Systems
SkySat Constellation (0.9; 1.4m)
12 mini-satellites launched since 2013100kg, 80cm height
Current Earth Observation (EO) SystemsPassive (Optical) Systems
SkySat Constellation (0.9; 1.4m)HD Videos (1.1m; up to 90s)
12 mini-satellites launched since 2013100kg, 80cm height
Current Earth Observation (EO) SystemsPassive (Optical) Systems
Flock Constellations (3-5m)CubeSats (10x10x30cm; 4kg)
Flock 1: 28 satellitesFlock 2e: 20 satellitesFlock 2p: 12 satellitesFlock 2k: 48 satellitesFlock 3m: 4 satellitesFlock 3p: 4 satellites
Current Earth Observation (EO) SystemsActive Systems
Have their own source of electromagnetic radiation, usually working in narrow bands of the electromagnetic spectrum (microwave).
Current Earth Observation (EO) SystemsActive Systems
SRTM (Shuttle Radar Topography Mission)
28/10/2001
Current Earth Observation (EO) SystemsActive Systems
SRTM (Shuttle Radar Topography Mission)
28/10/2001
Mapped 80% of Earth’ssurface (2000)
90m resolution(30m in the EUA)
ASTER GDEM (2009)30m resolution
Current Earth Observation (EO) SystemsActive Systems
28/10/2001
RADARSAT-2 (C Band; up to 1m)
28/10/2001
Current Earth Observation (EO) SystemsActive Systems
28/10/2001
Sentinel 1A, 1B (C Band; up to 1.5m)
Current Earth Observation (EO) Systems
List of Earth Observation Satellites (Wikipedia)
28/10/2001
https://en.wikipedia.org/wiki/List_of_Earth_observation_satellites