Remote Sensing Platforms and Its types

Types of Platforms
1. Airbrone Platforms
2. Spacebrone Platforms

Platforms are Vital Role in remote sensing data acquisition
Necessary to correct the position the remote sensors that collect data from the objects of interest

1. REMOTE SENSING PLATFORMS M.Senthamizhan Assistant Professor / Civil Alagappa Chettiar Government College of Engineering and Technology, Karaikudi Tamilnadu

2. Vital Role in remote sensing data acquisition Necessary to correct the position the remote sensors that collect data from the objects of interest

3. Air brone Platforms

4. Balloons

5. Used for specific projects Commonly restricted by meteorological factors, such as Wind velocity, direction etc., Two Types (i) Free Balloons (ii) Tethered Balloons

6. Aircraft

7. Dakota Speed:240km/ hr Height : 6km to 7 km

8. Avro Speed:600 km/ hr Height : 8km

9. Cessna Speed:350 km/ hr Height : 9km

10. Canberra Speed:560 km/ hr Height : 5km

11. Used for obtaining aerial photographs Useful for regional coverage and large scale mapping Flexibility of altitude in flying and data acquisition as per need Important : Maximum Stability, Free from vibrations and oscillations, fly with a uniform speed, the height of ceiling. Types: (i) Helicopters (ii) Drones (iii) Sail Planes are also used for low altitude photography and television photography.

12. Helicopters

13. Drones

14. Sail Planes

15. Space brone Platforms

16. Satellites – Use in Natural resource mapping, meteorological and communication applications Free flying orbiting vehicles whose motion is governed by gravity and atmosphere based Kepler’s Law Entire earth or designated portion can be suitably covered at specified intervals Least affected by disturbance in atmosphere and hence their orbits can be properly defined Also helpful in viewing extraterrestrial bodies Types (i) Geostationary Satellites (ii) Sun Synchronous Satellites

17. Geostationary Satellites Also known as Earth Synchronous Satellites and the orbit in which these satellites move is called geosynchronous or geostationary satellite Placed at a distance of 36,000km above the equator At this altitude the orbital speed of the satellite is the same as that of the Earth’s rotation speed. Satellite cover the same area continuously over they are flying and information transmission is rapid Spatial resolution is poor (1 km) Used for Weather forecasting and Communication Purposes

18. INSAT ( INDIA) 94 E

19. GOES 1 ( USA) 131 W

20. GMS ( JAPAN) 140 E

21. Meteosat (ESA) 0

22. Sun Synchronous Satellites Provide Global coverage with high resolution Used for applications in resource surveys and monitoring Also called natural resource or polar satellites Move in low earth orbit at 800-1000km altitude over or near the north and south poles. The orbit is known as polar or sun synchronous orbit, coinciding with the plane of the sun. Normally passes a particular place at the same local time after a regular interval of time, providing repetitive coverage of the place.

23. IRS Series ( INDIA)

24. LANDSAT Series (USA )

25. NOAA Series (USA )

26. SPOT Series (France)

27. some satellite images