Chapter 6 Terms

Question 1

The first Earth observation satellite

Answer 1

1. TIROS- Television and Infrared Observation Satellite

2. Launched in 1960

Question 2

Origins of Landsat

Answer 2

1. Landsat 1 launched in 1972, first satellite for broad-scale observation of Earth’s land areas
2. Landsat 1-8 have been launched, with Landsat 9 being prepped for 2019
3. Have used RBV, Multiple Spectral Scanners (MSS), and TM sensors

Question 3

Different Satellite Systems

Answer 3

1. SPOT
2. India Remote Sensing (IRS)
3. IKONOS
4. QuickBird
5. WorldView-1 and 2-
6. Geo-Eye-1
7. RapidEye

Question 4

Landsat atmospheric windows

Answer 4

1. Band one= .45um-.52um
2. Band two= .52um-.60um
3. Band three= .63um-.69um
4. Band four= .75um-.90um
5. Band five= 1.55um-1.75um
6. Band six= 10.4um-12.5um
7. Band seven= 2.09um-2.35um

Question 5

Planimetric

Answer 5

feature extraction involves the creation of maps that show only the horizontal position of features on the Earths’ surface

Question 6

Three Types of Polynomial Equations

Answer 6

1. Linear- first order, 3 GCP
2. Quadratic- second order, 6 GCP
3. Cubic- third order, 10 GCP

Question 7

Nearest Neighbor Approach

Answer 7

1. uses the value of the closest input pixel
   for the output pixel value.
2. Output values are the original input values. Since
   original data are retained, this method is recommended
   before classification.
3. Easy to compute and therefore fastest to use

Question 8

Bilinear Interpolation Approach

Answer 8

1. uses the distance-weighted average of the nearest
   four pixels to the output pixel.
2. Makes the image look smooth
3. Alters original data and reduces contrast by averaging neighboring values together.