Remote sensing satellites are placed above the earth surface at a height of
Show Hint
Always distinguish the two main orbit classes:
- Remote sensing (imaging): Polar orbits at low altitudes (\(\approx\) 800 km).
- Weather/Communication: Geostationary orbits at high altitudes (\(\approx\) 36,000 km).
Step 1: Understanding the Concept:
Satellites are launched into specific orbital configurations based on their intended mission (such as meteorology, global positioning, or high-resolution surface imaging). Step 3: Detailed Explanation:
Let us review standard satellite altitudes:
1. Low Earth Orbit (LEO) Polar Sun-Synchronous Orbit: Standard earth observation and agricultural remote sensing satellites (such as Landsat, IRS, and Sentinel) operate in sun-synchronous orbits.
These satellites are placed at altitudes ranging from 700 km to 900 km (nominally averaged around 800 km) to capture high-resolution imagery under consistent solar illumination angles.
2. Geostationary Earth Orbit (GEO): Meteorological and communication satellites are placed at approximately 36,000 km to match the Earth's rotation, remaining stationary over a single coordinate.
Therefore, remote sensing satellites are typically placed at a height of approximately 800 km. Step 4: Final Answer:
The correct option is 1, which corresponds to 800 km.
