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Lecture 10 Content

Other Satellites

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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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Moderate resolution land satellites

– Examples:IRS System

Resurs-01

ADEOS

JERS-1

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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

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… The End …