Eyes in the Sky & Data Analysis.

Transcription

1 Eyes in the Sky & Data Analysis

2 How can we collect Information about Earth

3 Climbing up Trees & Mountains Gathering Food Self Protection Understanding Surroundings

4 By Travelling Collected Information Converted into maps

5 By Scientific Methods Cameras Aircrafts Sensors Satellites

6 Activity 1 (Group) Compare the Advantages & Disadvantages of 1. Traditional Methods 2. Scientific Methods for Collecting Information about Earth

7 Activity 1 - Consolidation Disadvantages of Traditional Methods for collecting information about Earth Information Gathering is not Possible If Climate is not Favorable If Places are not Reachable It takes more Time to Collect Recent changes may not be Recorded

8 Advantages of using Scientific Methods for collecting information about Earth Vast area can be Analysed Permanent Information is Obtained Same Information can be used for different Subjects Quick Data Collection & Analysis Updating Recent Changes is Easy Even Minute things can be Analysed

9 19 th Cent. The Invention of Photography

10 Used the Possibility of Photography for Remote Sensing Mounting cameras on Hand Pigeons Balloons Aircrafts

11 Camera on Hand Discuss the Advantages & Disadvantages o o o o o o

12 For what Purpose did it use?

13 Camera on Balloons

14 Camera on Aircraft o o Discuss the uses

15 Possibility of Satellites for Remote Sensing Began in 1960s Used Cameras & Scanners

16 Collecting Information about an Object With the help of Satellite Without actual Physical Contact

17 Source of Energy Remote Sensing Factors Platform Sensor

18 Based on Source of Energy Remote Sensing can be Active Remote Sensing Passive Remote Sensing Artificial Source of Energy Solar Energy

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20 Sensors Instrument used for Data Scanners Collection through Cameras Remote Sensing

21 Try to locate the position of the camera when it captured each of these photographs.

22 Based on Platform Remote Sensing can be Terrestrial Photography Aerial Remote Sensing Satellite Remote Sensing

23 Terrestrial Photography From Earth s Surface With Cameras

24 Aerial Remote Sensing

25 Observe the Picture and Write your Findings

26 Observation Aerial Photograph Repeated Portion Ensured Continuity To obtain 3D Vision Overlap Find out These Stereo Pair Stereoscope

27 Stereo Pair Stereoscope

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29 Activity 2 Discuss the Advantages & Disadvantages of Aerial Remote Sensing

30 Limitations of Aerial Remote Sensing Shaking of Aircraft Open Space for Landing & Takeoff Not for Large Area Cost for Refueling

31 Satellite Remote Sensing

32 Artificial satellites can be classified into 2 based on the Orbit Orbit

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34 Geostationary Satellites About km. above Earth 1/3 of Earth comes Under its View Move with the Earth s Rotation Stays on a Specific Place Continuous Data Collection on it Used for Telecommunication, Weather..

35 Sun Synchronous Satellites About 1000 km. below Field of View is Less Move the Earth along the Poles Repetitive Data Collection is Possible Used for Data Collection on Natural Resources, Land use, Ground Water...

36 Activity 3 (Complete the Table) Geostationary Sun Synchronous Orbit Length Field of View Movement Data Collection Uses Other Examples

37 Geostationary Sun Synchronous Orbit Length km 1000 km Field of View More Less Movement Earth s Rotation Polar Data Collection Continuous Repetitive Uses Other Communication, Weather.. Stays on a specific Place on Earth Natural Resources, Land use, Water.. Used for Remote Sensing Examples INSAT 2A, 2B, 2C IRS ID, IC & ID

38 India IRS France SPOT Japan MOS European Space Agency ERS

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40 Spectral Signature Features of Sensor Satellite Imagery Spatial Resolution Amount of Reflected Energy by each Object Objects Recognized by the Sensor are converted into Images with the help of Computers Size of the smallest Object on Earth that can be Recognized by the Sensor

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42 Remote Sensing can be used for

43 Ocean exploration Weather observation

44 Land use Flood and Drought

45 Forest Agriculture

46 Oil explorations Ground Water

47 Activity 4 List the Uses of Remote Sensing Technology

48 Weather observations Ocean explorations Understanding land use Monitoring flood and drought Identifying forest fires Know the extent of crops & spread of pest attack Oil explorations Locate ground water potential

49 Information Hardware GIS Software User

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51 Two kinds of Data are necessary for data analysis in GIS Spatial Data Attributes Latitudinal & Longitudinal Positions of an Objects on Earth Elements of Locations Eg. Platform, Depth, Water (Fresh/Not), Ownership of a Well

52 Can we integrate all these Different Maps? What will be the Advantages? How is it Possible?

53 Layers

54 Different Layers in the Map of India

55 Analytical Capabilities of GIS Network Analysis Overlay Analysis Buffer Analysis

56 What are the Advantages Finding the Shortest Route For Emergency

57 Buffer Analysis

58 Overlay Analysis

59 Applications of Buffer Analysis For Widening Road Buffer Zone for Schools Hospitals Airport Applications of Overlay Analysis For Comparing the Changes Eg. Crops in an area between Landuse

60 Activity 5 (Group Discussion) Different Applications of GIS Collecting Information on Places, Land type, Land use, Parched land, Forest, Soil, Road.. Developmental Activities Better Land use Environmental Activities

61 Uses of GIS o Compile Data o Update the Data o Thematic Studies o Spatial Representation o Visual Model Generation o Prepare Maps, Tables & Graphs

62 Activity 6 by using Qgis Software 1. Finding shortest way 2. Preparing a Buffer zone

63 Does your Mobile has this Facility? What are its Uses? What is it?

64 Helps sensing the Latitudinal & Longitudinal Location and Elevation of Objects on Earth with time GPS

65 GPS Series of 24 Satellites Placed at 6 different Orbits Requires Signals from at least 4 Satellites Can locate places with the help of signals from Satellites

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68 Activity 7 Discuss the Uses of GPS based on the Following 1. Transportation Road, Water, Air.. 2. Security Valuable things VIPs 3. Survey, Map Preparation 4. Communication 5.

69 Additional Activities 1. Remote Sensing can be divided based on Energy & Platform. Which are they? 2. What do you think are the advantages of Satellite remote Sensing when compare with Aerial Remote Sensing? 3. Make a comparison between Geostationary & Sun Synchronous Satellites. 4. Two kinds of data are necessary for data Analysis in GIS. Which are they? 5. What are the uses of GIS?

70 Michael Angelo M.A. MA (Phi., His.) HSA (Social Science) Master Trainer, EKM