Remote sensing
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This document discusses remote sensing technology and its history. It describes how remote sensing works by gathering information from objects without direct contact through various components like energy source, sensors, transmission and processing. It outlines different types of remote sensing like passive and active, and systems used like optical, radar and lidar. It provides details on optical remote sensing systems including panchromatic, multispectral, super spectral and hyperspectral imaging. Finally, it lists some application areas of remote sensing like forestry, agriculture, hydrology and land use.
Remote sensing
- 1. REMOTE SENSING TECHNOLOGY Submitted By:-Nishant Chaturvedi MCA Vth Sem MCA-554 Submitted to:-Mrs. Preeti Tiwari Sr.Asst.Professor ISIM Jaipur
- 2. History 1858 Balloonist G.Tournachon made photographs of Paris from his balloon. Systematic aerial photography developed for military and reconnaissance purposes beginning in World War I and reaching a climax during the Cold War . Artificial satellites in the latter half of the 20th century.
- 3. Aerial Photos Balloon photography (1858) Kite photography (1890) Pigeon cameras (1903) Aircraft (WWI and WWII) Space (1947)
- 4. REMOTE SENSING SYSTEM The gathering of information from an object or surface without direct contact.
- 5. Energy Source or Illumination (A) Radiation and the Atmosphere (B) Interaction with the Target (C) Recording of Energy by the Sensor (D) Transmission, Reception, and Processing (E) Interpretation and Analysis (F) Application (G) Remote Sensing Process Components
- 6. Types Passive Remote Sensing Photography Radiometers Active Remote Sensing RADAR LiDAR
- 7. Resolution Techniques Spatial Resolution Spectral Resolution
- 10. System Used Optical System Panchromatic imaging system Multispectral imaging system Super spectral Imaging System Hyper spectral Imaging System RADAR System LiDAR System
- 11. Optical Remote System Optical remote sensing makes use of visible, near infrared and short-wave infrared sensors to form images of the earth's surface by detecting the solar radiation reflected from targets on the ground.
- 12. Panchromatic Imaging System A single channel sensor is used to detect radiation If range of wavelength and the visible range become same then the imagery will appear as a black and white photograph taken from space
- 13. Multispectral Imaging System Uses a multi channel detector and records radiation with a narrow range Brightness and color informatics are available
- 14. Super Spectral Imaging System Finer spectral feature that capture by the sensors.
- 15. RADAR System Radio Detection And Ranging Object detection system which uses electromagnetic waves determine range, direction or speed
- 16. LiDAR System Light Detection And Ranging Measures distance by sending pulses of laser light that strike and reflect from the surface of earth.
- 17. Application Area Forestry Agriculture Hydrology Sea Ice Land Cover & Land Use