10/12/2015 gem 3366 1 lecture 10 content other satellites
TRANSCRIPT
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Moderate resolution land satellites
High resolution land satellites
Hyperspectral satellite systems
Meteorological satellites
Ocean monitoring satellite
Earth Observing system
Space station remote station
Lecture content:
In this lecture the group of satellites in white text are presented in your text book while those in yellow text are briefly summarized in this lecture
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IRS System– Indian Remote Sensing (IRS) program– IRS-1A launched in 1988 and IRS-1B in
1991– Satellites are equipped with MSS– Second generation of IRS satellite
operation began with the launch of IRS-1C and IRS-1D, 1995 and 1997 respectively
Carry three sensors
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RESURS-01– Russian satellite– Launched first series in 1985– Operated for 3 years and a second
satellite launched in 1988 which served for 7 years
– Third satellite began in 1994
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– Satellites carry MSS with spatial resolution of 170m in four visible and near IR bands
– From 678km, the system has a revisit interval of 4 days
– Size of the scene is 600x600km
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ADEOS– Japanese satellite– Advanced Earth Observing Satellite (ADEOS),
launched in 1996– Carry two primary sensing systems
Advanced Visible and Near Infrared Radiometer (AVNIR)
Ocean Color and Temperature Sensor (OCTS)
– AVNIR data collected in four-band MS mode– OCTS records 8 bands in the visible and near IR
and 4 bands in the thermal region
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JERES-1– Primarily as a radar remote sensing
mission– Launched in 1992– Carried an Optical Sensor (OPS) which
captures spatial resolution of 18x24m– Employs pushbroom scanning in 7 bands
in the visible, near IR, and mid-IR
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High Resolution land satellites– Numerous launched, or are in
development– Examples:
SPIN-2
IKONOS
QuickBird
OrbView-3
EROS
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SPIN-2– Russian (first mission in 1998)– Space Information-2 (SPIN-2)– Data is produced by digitizing
panchromatic photographs taken by a particular camera called KUR-1000
– Altitude of 220km– Individual scenes of 40x160km
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IKONOS– Launched in 1999– Repeats every 11 days– Image coverage is 11x11km– Collects data in four bands at a ground
resolution of 4m– System is highly maneuverable (can
zoom in and out)
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QuickBird– By EarthWatch Inc. – Launched in 2001– High resolution data obtained at an
altitude of 600km– Average revisit time is 1 to 5 days– 1m resolution panchromatic sensor and
the four band sensor with a resolution of 4m
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OrbView-3– By ORBIMAGE– Launch in mid-2000– Altitude of 420km– Repetition is less than 1.5 days with
OrbView-3 and OrbView-4 operating simultaneously
– Includes panchromatic band (1m resolution), and four MS bands (3m resolution)
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EROS– By ImageSat International– Joint between Israel Aircraft Industries
and Core Software Technologies– Two EROS A+, launched in 2000, and
2001– Pushbroom scanning by these
panchromatic systems – Resolution of 1.8m and 16km swath width
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Meteorological satellites– Assist in weather prediction and monitoring– Use sensors that have coarse spatial resolution– Various countries have launched various
metsats– Three well known metsats (US based are:
National Oceanic and Atmospheric Administration (NOAA)
Geostationary Operational Environmental Satellite (GOES)
Defense Meteorological Satellite Program (DMSP)
– All carry a range of meteorological sensors
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Ocean monitoring satellites– 2/3 of the earth is covered by water– Satellites provide synoptic views of the oceans
over large areas and extended over time– Examples:
Seasat– Operate in the microwave portion of the spectrum
Nimbus-7– Also called Coastal Zone Color Scanner (CZCS)
– Measures color and temperature of coastal zones
– Carry ocean specific sensors