In which of the following activities are Indian Remote Sensing (IRS) satellites used?
- Assessment of crop productivity
- Locating groundwater resources
- Mineral exploration
- Telecommunications
- Traffic studies
Select the correct answer using the code given below
Detailed Explanation:
✅ Statement 1 – Correct: IRS satellites use multispectral and hyperspectral imaging to monitor crop health, growth patterns, and productivity assessment through vegetation indices like NDVI.
✅ Statement 2 – Correct: Remote sensing data from IRS helps identify groundwater potential zones by analyzing geological structures, lineaments, and soil moisture patterns.
✅ Statement 3 – Correct: IRS satellites provide spectral signatures of surface minerals, aiding in mineral exploration and geological mapping through techniques like lithological discrimination.
❌ Statement 4 – Incorrect: Telecommunications require geostationary communication satellites (INSAT/GSAT series), not IRS (earth observation) satellites which are designed for remote sensing, not signal relay.
❌ Statement 5 – Incorrect: Traffic studies require high temporal resolution and real-time monitoring; IRS satellites have limited revisit times and are not optimized for dynamic traffic flow analysis.
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