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Flashcards in Ch.9-12 Deck (59)
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1

NOAA

NASA

MSS-

National Oceanic and Atmospheric Administration

Established in 1958, National Aeronautics and Space Administration.

Multi Spectral Scanner abroad Landsat 1-5

2

SPOT-

EROS-

Satellite Pour I'Observation de la Tierra

Earth resources Observation Science center, Souix Falls South Dakota. Downlink for satellite imagery.

3

UV-
IR-

Ultraviolet light- .01-.4 micrometers

Infrared .7- 100 micrometers\

4

NIR-

MIR-

TIR

Near infrared - .7- 1.3 micrometers (satellite remote sensing)

Middle Infrared 1.3- 3.0 micrometers (water content)

Thermal Infrared 3- 14 micrometers (heat sources)

5

NDVI-

Normalized Difference Vegetation Index, measures health of vegetation using NIR and Red Energy measurements.

6

EOS-

Nasa's Earth Observation System mission Program

7

Terra

MOPITT,
MODIS,
ASTER
1999- Flagship, 5 sensors , purpose is to measure the process involved with Earths Land and Climate

8

Aqua

MODIS,
AMSU-A,
AIRS,
AMSR-E
2002, 6 sensors, examine multiple facets of earth water cycle

9

Arura

HSB
HIRDLS
TES
OMI
2009, 4 sensors, examine elements in air and earths chemistry.

10

WAAS-

Wide Area Augmentation System

11

What is Sputnik

first man made satellite to achieve orbit around earth.

12

What was the name of the first U.S. remote sensing satellite?

Corona

13

What is an example of a geostationary satellite?

WAAS, EGNOS

14

What are the 4 characteristics of satellite sensors?

Spatial resolution
radiometric resolution
temporal resolution,
and spectral resolution.

15

What year was the first Landsat launched?
the last?
What was the number of the last Landsat launched?

1972
Feb 13, 2013
8

16

What happened to landsat 6?

What failed on landsat 7?

it launched in 1993, failed to achieve orbit and was lost

the SLC(scan line indicator), causes missing data

17

Name 2 for profit companies that operate remote sensing satellites-

Glovis
Landsat Look

18

What is an example of Active remote sensing?

an active sensor is a radar instrument used for measuring signals transmitted by the sensor that were reflected, refracted, or scattered by earth surface or its atmosphere.

19

What is passive remote sensing?

can only be used when naturally occurring energy is present.

20

Two units used when measuring wavelengths?
What 3 colors do we see

Meters, Micrometers
red,Blue, Green

21

What three things can happen to electromagnetic energy when it hits a target on the ground?

Transmission
Absorption
Spectral reflectance

22

How does energy that is sensed in remote sensing become an image for us to view and analyze?

Spectral Signature
it reflects back in its own unique form

23

Three key satellites to the EOS-

Terra, Aura, Aqua

24

What is blue marble -

showing the entire earth from space.

25

Visable Earth-

A website operated by NASA to distribute EOS images and animations of eos satellites or databases

26

World Wind-

the global system of paths and rows that is used to identify what area on Earth’s surface is present in which Landsat scene.

27

A-Train-

another term for the Afternoon Constellation

28

Incident energy

total amount of energy (per wavelength) that interacts with an object

29

Spectral reflectance-

% of the total incident energy that was reflected from that surface

30

Spectral signature-

a unique identifier for a particular item, generated by charting the percentage of reflected energy per wavelength against a value for that wavelength

31

Brightness value-

energy measured at a single pixel according to a pre-determined scale.

32

Atmospheric windows-

those wavelengths of electromagnetic energy in which most of the energy passes through Earth’s atmosphere

33

Rayleigh scattering-

scattering of light caused by atmospheric particles smaller than the wavelength being scattered

34

Mie scattering-

scattering of light caused by atmospheric particles the same size as the wavelength being scattered

35

Nonselective scattering-

scattering of light caused by atmospheric particles larger than the wavelength being scattered

36

Electromagnetic spectrum-

light energy wavelengths and the properties associated with them.

37

Visible spectrum-

the portion of the electromagnetic spectrum with wavelengths between 0.4 and 0.7 micrometers.

38

Wavelength-

the distance between the crests of two waves

39

Swath width-

the width of the ground area the satellite is imaging as it passes over the Earth’s surface

40

Near-polar orbit-

an orbital path close to the North and South poles that carries an object around Earth at an unvarying elevation.

41

Geo-stationary orbit-

an orbit in which an object follows precisely the direction and speed of Earth’s rotation and is therefore always directly above the same point on Earth’s surface.

42

Sun-synchronous orbit-

an orbital path set up so that the satellite crosses the same areas at the same local time.

43

Across-track scanner-

a scanning method using a rotating mirror to collect data by moving the device back and forth across the width of the satellite’s swath.

44

Along-track scanner-

a scanning method using a linear array to collect data directly on a satellite’s path

45

Spatial resolution-

the size of the area on the ground being represented by one pixel’s worth of energy measurement.

46

Radiometric resolution-

the degree of a sensor’s ability to determine fine differences in a band of energy measurements.

47

Temporal resolution-

the length of time a sensor takes to come back and image the same location on the ground.

48

Spectral resolution-

the bands and wavelengths measured by a sensor

49

Pan-sharpening-

the technique of fusing a higher-resolution panchromatic band with lower-resolution multispectral bands to improve the clarity and detail seen in the image.

50

Panchromatic-

black and white aerial imaging

51

Hyperspectral sensor-

a sensor that can measure hundreds of different wavelength bands simultaneously.

52

Principle point-

Center of the photograph

53

Nadar Point

point directly below the observer

54

Relief displacement-

shift in objects appearance caused by distance

55

Orthophoto-

effects of relief displacement have been corrected

56

Oblique photo-

photo taken at an angle

57

Verticle photo-

photo taken at the nadir point

58

tone-

site association -

pattern-

grey scale

location of an object based on the features near it.

physical arrangements of an object

59

photoscale-

book method-

like mapscale, dependent on the focal length of the camera. determined by dividing distance on photo by distance in real life.

a= h/L