intro to RS

Question 1

what are digital images composed of?

Answer 1

pixels

Question 2

how does software produce images

Answer 2

converts numbers into images

Question 3

what is the difference between digital and analog

Answer 3

digital is discrete values and analog is continuous range of values

Question 4

what is the natural unit of computer data

Answer 4

binary words

Question 5

what system do computer use

Answer 5

binary systems

Question 6

what is resolution

Answer 6

the fineness of detail in an image “crisp”

Question 7

what are the four resolutions in RS

Answer 7

spatial, spectral, radiometric and temporal

Question 8

what is radiometric resolution

Answer 8

bit depth

Question 9

what does SRC stand for?

Answer 9

spectral reflectance curve

Question 10

what is spectral resolution

Answer 10

the sensor ability

Question 11

higher resolution produces a ____ image

Answer 11

a crisper imager

Question 12

which spectral band would you use to identify mineral deposits?

Answer 12

hyperspectral

Question 13

what two things make up a dem

Answer 13

dsm and dtm

Question 14

what orbit does a gps usually use?

Answer 14

medium orbit- takes 12 hours to orbit and crosses at two spots over equator in 24 hours

Question 15

true/ false: as the number of bits increase the maximum value decreases?

Answer 15

false

Question 16

what is LIDAR?

Answer 16

an active system, uses lasers to determine objects being detected

Question 17

what is the difference between passive and active sensors

Answer 17

passive uses natural sun energy while active produces own energy and pulse.

Question 18

what are point clouds

Answer 18

set of data points that represent a 3d object or shape.