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What is Parallax > 1- Spectral Reflectance > Flashcards

1- Spectral Reflectance Flashcards

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1
Q

Specific per crystal lattice

A

Refractive index

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2
Q

Creates a red sunset

A

Smog scatter waves

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3
Q

Indisputable mineral ID (due to refractive index)

A

XRD, Xray Diffraction

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4
Q

Wave length and Wave frequency belong to

A

Wavelength theory

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5
Q

Theory that states mass has units called photon

A

Particle/Quantum theory

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6
Q

Examples of Active Remote Sensing

A

Radar, LiDar, IfSAR

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7
Q

These regulate the passage of light

A

ISO, Shutter speed, Aperture

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8
Q

Uses shadow to run radar

A

Shadow radar tomography

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9
Q

Relationship between temperature and radiant energy

A

Quadratic (4x increase temp : 1x increase radiant energy)

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10
Q

Relationship between wavelength, frequency and energy

A

Energy is directly proportional to frequency and inversely proportional to wavelength.

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11
Q

Remote sensing in geology is

A

Non-stable

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12
Q

Remote Sensing is

A

No direct contact with the object being observed

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13
Q

Remote Sensing data is usually

A

Radiant data

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14
Q

Data: _____, while Information: _____

A

Data: Numbers, Information: Salient data

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15
Q

This plot usually has more than 3 variables

A

Scatter plot

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16
Q

Types of data used in remote sensing (3)

A

Variations in force distributions,
Acoustic wave distributions,
Electromagnetic distributions

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17
Q

Electromagnetic energy sensors can be

A

Airborne or spaceborne

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18
Q

Remote sensing is used for

A

Inventory, mapping, and monitoring earth resources

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19
Q

The 2 basic processes of remote sensing

A

Data acquisition and Data analysis

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20
Q

Uses sensors to record Electromagnetic (EM) reflection and emission

A

Data acquisition

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21
Q

Use of viewing and interpretation equip to analyze data

A

Data analysis

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22
Q

Main source of radiant energy

A

Sun

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23
Q

It states that light is a wave. Basis for electromagnetic energy

A

Wave theory

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24
Q

Wavelength Formula

A

C = λ v

C = speed of light
λ = wavelength
V = frequency

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25
Nanometer
nm = 1x10(^-9)m
26
Micrometer
μm = 1x10(^-6)m
27
Remote Sensing uses these waves
Visible, Infared (IR), and Microwave waves
28
Used/related to heat sensations
Thermal infared
29
Used for night remote sensing
SWIR, short wave infared
30
It states that waves are composed of discrete units called photons or quanta
Particle theory
31
Microwave emissions are _____ to detect than IR
harder
32
Ultimate source of EM radiation for remote sensing
SUN
33
True or false: all matters above absolute zero continuously emits electromagnetic radiation
True
34
True or false: There is no radiation at absolute zeto.
True, there are no vibrations at absolute zero (i.e. no radiation)
35
Equation used for a blackbody
Stefan - Boltzmann law
36
M = σT(^4)
Stefan - Boltzmann law
37
True or False: increase in temperature results to increase in emitted energy
True
38
A hypothetical material that totally absorbs and re-emits all energy incident upon it
Blackbody
39
General surface temperature
230 Kelvin
40
Energy variation indicates
Variations in spectral characteristics
41
Which equation will give the maximum peak of the wave crest for every given temperature
Wien's displacement law
42
λm = A/T
Wien's displacement law
43
True or false. In Wien's displacement law, below μm is emitted energy/light while above μm is reflected energy/light.
False. Below μm is reflected while above μm is emitted.
44
Distance traveled by radiation from source to remote sensing.
Path length
45
Factors affecting atmospheric effects (4)
1. Path length 2. Magnitude of signal energy 3. Present atmospheric conditions 4. Wavelengths
46
Mechanisms for atmospheric effects: (2)
1. Scattering 2. Absorption
47
Unpredictable diffusion by particles in the atmosphere
Scattering
48
Three types of scattering
1. Rayleight scatter 2. Mie scatter 3. Nonselective scatter
49
Particles are smaller than wavelength
Rayleigh scatter
50
Mie scatter
Particles are the same size as wavelength
51
Particles are larger than wavelength
Nonselective scatter
52
This scattering influences short wavelength and responsible for the blue sky.
Rayleigh scatter
53
This scattering influences longer wavelengths and responsible for the red sky at sunset.
Mie scatter
54
This scatters all wavelengths equally and is associated with clouds.
Nonselective scatter
55
Results to loss of energy to atmospheric constituents
Absorption
56
Most efficient absorbers in the atmosphere
Water vapor (H2O), CO2, and O3
57
Wavelength ranges where radiant energy is transmitted in the atmosphere.
Atmospheric windows
58
True or false. Remote sensing methods are limited to the ranges of these atmospheric windows.
True.
59
True or false. Each sensor only has one one value.
True
60
Sensor design considerations
1. Spectral sensitivity of the sensor 2. Presence/absence of atmospheric windows in the target wavelengths 3. Source, magnitude, and spectral composition of energy in these ranges
61
3 types of energy interactions
1. Reflection 2. Absorption 3. Transmission
62
True or false. Energy is the same in all wavelengths.
False. Energy varies in different wavelengths

What is Parallax (7 decks)

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