8/6/2019 Fundamental of REMOTE SENSING

1/39

GOKUL.G.S

8/6/2019 Fundamental of REMOTE SENSING

2/39

REMOTE SENSING

It is the science of acquiring information about theearths surface without actually being contact with it.

8/6/2019 Fundamental of REMOTE SENSING

3/39

STEPSy Energy source illumination

y Radiation and atmosphere

y Interaction with targety Recording of the energy by the sensor

y Transmission, reception and processing

y analysis and Interpretation

yApplication

8/6/2019 Fundamental of REMOTE SENSING

4/39

Electromagnetic Radiationy Gamma ray

8/6/2019 Fundamental of REMOTE SENSING

5/39

Scatteringy Rayleigh Scattering

y Mie Scattering

y None selective Scattering

8/6/2019 Fundamental of REMOTE SENSING

6/39

AbsorptionAtmospheric window

The part ofEM radiation which is not influenced byabsorption

8/6/2019 Fundamental of REMOTE SENSING

7/39

ClassificationyActive Remote sensing

y Passive Remote sensing

8/6/2019 Fundamental of REMOTE SENSING

8/39

8/6/2019 Fundamental of REMOTE SENSING

9/39

SENSORy Passive Sensor

yActive Sensor

8/6/2019 Fundamental of REMOTE SENSING

10/39

RESOLUTIONy Spatial Resolution

y Spectral Resolution

y Radiometric Resolution

y Temporal Resolution

8/6/2019 Fundamental of REMOTE SENSING

11/39

SPATIAL RESOLUTION

y It refers to the size of the smallest possible feature thatcan be detected

8/6/2019 Fundamental of REMOTE SENSING

12/39

Spectral resolutiony It describe the ability of a sensor to define fine

wavelength intervals.

yThe finer the spectral resolution, the narrower the

wavelength range for a particular channel or band.

8/6/2019 Fundamental of REMOTE SENSING

13/39

8/6/2019 Fundamental of REMOTE SENSING

14/39

8/6/2019 Fundamental of REMOTE SENSING

15/39

8/6/2019 Fundamental of REMOTE SENSING

16/39

8/6/2019 Fundamental of REMOTE SENSING

17/39

Temporal resolutiony The time taken for a satellite to complete one orbit

cycle is its revisit period

y TR is the ability to image the exact same area at thesame viewing angle a second time is equal to this

period.

8/6/2019 Fundamental of REMOTE SENSING

18/39

8/6/2019 Fundamental of REMOTE SENSING

19/39

SATELLITE AND SENSORS

y Geostationary

y Polar

8/6/2019 Fundamental of REMOTE SENSING

20/39

8/6/2019 Fundamental of REMOTE SENSING

21/39

Polar SatelliteFollow an orbit in conjunction withthe earths rotation ,allows them to

cover most parts of the earths surface

8/6/2019 Fundamental of REMOTE SENSING

22/39

IRS

8/6/2019 Fundamental of REMOTE SENSING

23/39

RISAT (Radar Imaging Satellite)A microwave remote sensing mission with Synthetic

Aperture Radar (SAR) operating in C-band and having

a 6 x 2 meter planar active array antenna based ontrans-receiver module architecture.SAR is an allweather-imaging sensor capable of taking images incloudy and snow covered regions and also both duringday and night. RISAT weighs 1,750 kg.

8/6/2019 Fundamental of REMOTE SENSING

24/39

RESEOURCESAT-3

A follow on to Resourcesat-2, it will carry more advancedLISS-III-WS (Wide Swath) Sensor having similar swath

and revisit capability as Advanced WideF

ield Sensor(AWiFS), thus overcoming any spatial resolutionlimitation of AWiFS.Satellite would also carry

Atmospheric Correction Sensor (ACS) for quantitativeinterpretation and geophysical parameter retrieval

8/6/2019 Fundamental of REMOTE SENSING

25/39

8/6/2019 Fundamental of REMOTE SENSING

26/39

NOAAy National Oceanic and Atmospheric Administration

y Meteorology, Earth observation

yAVHRR(sensor)

8/6/2019 Fundamental of REMOTE SENSING

27/39

AVHRR/3 Channel Characterics

Channel

Number

Resolution at

Nadir

Wavelength

(um) Typical Use

11.09 km 0.58 - 0.68

Daytime cloud and surface

mapping

2 1.09 km 0.725 - 1.00 Land-water boundaries

3A 1.09 km 1.58 - 1.64 Snow and ice detection

3B 1.09 km 3.55 - 3.93

Night cloud mapping, sea

surface temperature

41.09 km 10.30 - 11.30

Night cloud mapping, sea

surface temperature

51.09 km 11.50 - 12.50 Sea surface temperature

8/6/2019 Fundamental of REMOTE SENSING

28/39

LandsatRBV, MSS, TM

Landsat-1 launched in 1972by NASA

8/6/2019 Fundamental of REMOTE SENSING

29/39

MSS BAND

8/6/2019 Fundamental of REMOTE SENSING

30/39

8/6/2019 Fundamental of REMOTE SENSING

31/39

SPOT(System Pour I Observation de la Terre)

Launched by CNES(Centre National dEtudes Spatiale) in1986

HRV(High ResolutionVisible )Imaging System

Capable of sensing in panchromatic mode or multispectralmode

8/6/2019 Fundamental of REMOTE SENSING

32/39

8/6/2019 Fundamental of REMOTE SENSING

33/39

8/6/2019 Fundamental of REMOTE SENSING

34/39

APPLICATION

8/6/2019 Fundamental of REMOTE SENSING

35/39

Agriculture

Crop type classification

Crop condition assessmentCrop yield estimationMapping of soil characteristicsMapping of soil management practices

Farming practices

8/6/2019 Fundamental of REMOTE SENSING

36/39

Forestry

8/6/2019 Fundamental of REMOTE SENSING

37/39

Geology

Surficial deposit/bed rock mappingLithological mappingStructural mappingSand and Gravel explorationMineral explorationHydrocarbon exploration

8/6/2019 Fundamental of REMOTE SENSING

38/39

Flood delineation andmapping

8/6/2019 Fundamental of REMOTE SENSING

39/39

THANKYOU