Model Question and Answers for APSC | Discuss role of remote sensing in development. (APSC 2015)

Model Question and Answers for APSC | Discuss role of remote sensing in development. (APSC 2015)

Ans : Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance (typically from satellite or aircraft). Special cameras collect remotely sensed images, which help researchers "sense" things about the Earth.
Major Applications of Remote sensing in Agriculture
 Soil Properties Sensing: Soil Texture, Structure, and Physical Condition Soil Moisture; Soil Nutrients.
 Crop Sensing: Plant Population; Crop Stress and Nutrient Status.
 Yield Monitoring Systems: Crop Yield; Harvest Swath Width; Crop Moisture:
 Variable Rate Technology Systems: Fertiliser flow; Weed detection, pressure sensors
Major Applications of Remote sensing in Health
 Information from remote sensing technologies is, for instance, applied to study the epidemiology of infectious diseases. 

 Data is used to monitor disease patterns, understand environmental triggers for the spread of diseases, predict risk areas and define regions that require disease-control planning.
 This tele-epidemiology is of particular relevance in developing countries, where infectious diseases remain among the top causes of death.
Major Applications of Remote sensing in Environment
Protection:
 Space-based technologies, such as remotely sensed data, have enhanced scientific understanding of water cycles, air quality, forests and other aspects of the natural environment.
 These surveying and monitoring tools provide valuable information on the state of ecosystems, which offers objective support for positive environmental action, including conservation and sustainable resource management.
Applications of Remote sensing in the disaster
management cycle
 Space-based technologies can contribute to all phases of the disaster management cycle, including prevention, preparedness, early warning, response and reconstruction.
Earth observation from space is a cost-effective way of obtaining unbiased and essential data on the physical world. Decision makers use this information to understand trends, evaluate needs, and create sustainable development policies and programmes in the best interest of all populations.