Remote Sensing Image Acquisition. Supplement to Lecture 1 material prepared by R. Lathrop 9/99 updated 8/03 includes slides previously prepared by S. Madry and C. Colvard Readings: ERDAS Field Guide 5th Ed. Ch 1, 3:56-82. Digital Image Acquisition.
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Supplement to Lecture 1
material prepared by R. Lathrop 9/99
includes slides previously prepared by S. Madry and C. Colvard
ERDAS Field Guide 5th Ed. Ch 1, 3:56-82
Keystone’s Wild RC-10 mapping camera
A large format oblique camera
Aerial Products Description
National Aerial Photography Program (NAPP) Recent,high-quality aerial photos covering the conterminous U.S. on five- to seven-year cycles (1987 - present).
National High Altitude Photography (NHAP) High-altitude aerial photos for the conterminous U.S. (1980 - 1989).
Digital Orthophoto Quadrangles (DOQs)
Digital images of aerial photos which combine the image characteristics of the photo with the georeferenced qualities of a map (1987 - present).
Space Acquired Photography
Photos taken from the International Space Station (ISS), Shuttle, Skylab, Gemini, and Apollo missions (1965 - present).
For more info: http://edc.usgs.gov/products/aerial.html
CCD-Scan Mirror TM
Original Current Future
Aircraft ScannersDigital imagery acquired from several multispectral scanners on board NASA ER-2, NASA C-130B, and NASA Learjet aircrafts (1982 - 1995).
For more info: http://edcdaac.usgs.gov/airborne/air_scan.html
Digital Cameras increasingly aerial imagery is being acquired through digital camera framing systems that can collect multispectral (VIS-NIR) imagery and be quickly corrected through GPS-based navigational systems to produce digital orthophotographic imagery in near-real time
Geostationary sensors orbit with the earth continually viewing the same hemispheric area
Polar orbiters, continually view new areas of the earth as the planet rotates underneath
the sensor. Keeps the same general solar time as it cross the equator on each orbit - called sun synchronous
For more info and images, go to: http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/BRS_SRVR/avhrrbrs_main.html
Began releasing images April 2000. Terra includes MODIS, a 2nd generation “AVHRR-like” instrument, with a number of potential applications in regional to global scale environmental monitoring of the land, ocean and atmosphere. Also includes ASTER, CERES, MISR and MOPITT.
For more info go to: http://terra.nasa.gov/
“Aqua,” Latin for “water,” is a NASA Earth Science satellite mission named for the large amount of information that the mission will be collecting about the Earth’s water cycle, including evaporation from the oceans, water vapor in the atmosphere, clouds, precipitation, soil moisture, sea ice, land ice, and snow cover on the land and ice.
Additional variables also being measured by Aqua include radiative energy fluxes, aerosols, vegetation cover on the land, phytoplankton and dissolved organic matter in the oceans, and air, land, and water temperatures.The AQUA Platform includes the MODIS, CERES and AMSR_E instruments. Aqua was formerly named EOS PM, signifying its afternoon equatorial crossing time.AQUA was launched May 2002.For more info: http://aqua.nasa.gov/
Note: water absorbs IR energy-no return=black
(where we look)
(how finely can we
measure the return)
0-63, 0-255, 0-1023
Landsat TM BAND 1 2 3 4 5 7 6
Water analysis-nuclear power cooling ponds)
Pan 0.51-.73 um
High Resolution Visible (HRV) sensor: 20m GRC
G (.5-.59), R (.61-.68), NIR (.79-.89)
Ground Swath Width of 60 km
For more info go to: http://www.spotimage.fr/home/home.htm
2 side-by-side HRV sensors
1 m panchromatic
4 m multi-spectral
sensor spatial spectral radiometric temporal
AVHRR 1.1 and 4 KM 4 or 5 bands 10 bit 12 hours
2400 Km .58-.68, .725-1.1, 3.55-3.93 (0-1023) (1 day, 1 night)
10.3-11.3, 11.5-12.5 (micrometers)
Landsat MSS80 meters 4 bands 6 bit 16 days
185 Km .5-.6, .6-.7, .7-.8, .8-1.1 (0-63)
Landsat TM30 meters 7 bands 8 bit 14 days
185 Km .45-.52, .52-.6, .63-.69, (0-255)
10.4-12.5, 2.08-2.3 um
SPOT P10 meters 1 band 8 bit 26 days
60 Km .51-.73 um (0-255) (2 out of 5)
SPOT X20 meters 3 bands 8 bit 26 days
60 Km .5-.59, .61-.68, .79-.89 um (0-255) (2 out of 5)
IKONOS 1 and 4 meters 1 and 4 bands 10 bit 1-2 days
11 km .45-.9, .44-.51, .52-.60, (0-1023)
1. Enhanced Landsat Thematic Mapper 7 (ETM+) imagery is available through the U.S. Geological Survey. Go to the USGS’ Earth Explorer web site (http://edcsns17.cr.usgs.gov/EarthExplorer/) or their newer, better web browser (http://glovis.usgs.gov).
A. How many Landsat TM scenes are needed to image the entire state of New Jersey?
B. What are the Path/Row numbers?
C. What is the cost per square km for the ETM+ Level 1G image?
Hint: 1st determine the area of the scene in km2, then divide scene cost by area
D. Using the Search Archive capabilities, determine the date of the most recent cloud-free (<20%) ETM+ image for Middlesex County, NJ. What is the Scene ID, Path/Row and date?
2. The OrbImage Corporation (www.orbimage.com/) markets OrbView and other high resolution imagery. Access the OrbImage site to get up-to-date information on pricing and availability.
A. What is the spatial accuracy and cost per square kilometer for the standard OrbView Cities product? OrbView Cities Plus?
3. DigitalGlobe (www.digitalglobe.com) markets Quickbird imagery. Access the DigitalGlobe site to get up-to-date information on pricing and availability?
A. What types of Quickbird image products are offered?