✅INTRODUCTION:-
πThe science of acquiring information about an object, without entering in contact with it, by sensing and recording reflected or emitted energy and processing, analysing, and applying that information.
πAccording to India’s National Remote Sensing Agency, “Remote Sensing is the technique of acquiring information about objects on the earth’s surface without physically coming into contact with them.”
✅PRINCIPLE:-
- The energy comes down to the earth and a part is reflected and detected by a sensor;
- The detection is captured as data, which is sent to the receiving station;
- Some pre-processing takes place in the receiving station, and then the pre-processed data is handed over to the users;
- The users analyze the data for their own application.
✅ TYPES:-
πPassive Remote Sensing.
πActive Remote Sensing.
πActive remote sensors create their own electromagnetic energy that is transmitted from the sensor towards the terrain interacts with the terrain producing a backscatter of energy and it’s recorded by the remote sensor’s receiver.
πPassive sensor detects the naturally transmitted microwave energy within its field of view.
- Identification of pest and disease infestation.
- Irrigation monitoring and management
- Identification, area estimation and monitoring.
- Crop condition assessment.
- Soil mapping.
- Crop yield modeling and production forecasting.
- Crop nutrient detection.
- Agricultural drought assessment.
- Identification of planting and harvesting dates.
✅ADVANTAGES OF REMOTE SENSING:-
- Good spectral and spatial resolution.
- Allows broad regional coverage.
- Allows continuous acquisition of data.
- Provides cost effective and map accurate data.
- Provides large archive of historical data.
✅DISADVANTAGES OF REMOTE SENSING:-
- Cost of data collection and data purchase is high.
- Problems with data analysis and interpretation.
- Problems with all weather capability as all sensors cannot see through clouds.
- Potential limitations with spatial, spectral and temporal resolutions of the various sensors.
✅CONCLUSION:-
πRemote sensing technology has developed from balloon photography to aerial photography to multi-spectral satellite imaging.
πSome of the benefits that can be gained from the use of remote sensing-
- Early identification to crop health and stress.
- Ability to use this information to do remedial work on the problem.
- Improve crop yield.
- Crop yield predictions.
- Reduce costs.
- Reduce environmental impact.
- Crop management to maximize returns through the season.
VIVEK KUMAR
B.Sc.agriculture.
(GEHU-DOON)
iamvivekagriculture.blogspot.com
vesaliusvivek.blogspot.com
very informative and useful
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