Question

Indian satellite sensor that can be used for very high resolution mapping of urban areas is

• A. LANDSAT.
• B. CARTOSAT.
• C. RESOURCESAT.
• D. MODIS.

Hint:

For urban mapping, CARTOSAT provides the necessary spatial resolution to capture fine details, unlike other satellite systems such as LANDSAT or MODIS.

Answer 1

The Correct Option is B

Among the satellite sensors mentioned, CARTOSAT is the most suitable for very high-resolution mapping of urban areas. CARTOSAT is part of the Indian Remote Sensing (IRS) satellite series, specifically designed to capture high-resolution imagery for cartographic applications, urban planning, and detailed land-use mapping. Its spatial resolution allows it to capture fine details that are essential for urban planning and monitoring.
Why is CARTOSAT the correct choice?
- CARTOSAT provides high-resolution images with a resolution of up to 1 meter (for certain modes), which is ideal for mapping urban landscapes and features like buildings, roads, and infrastructure. This high resolution is critical when it comes to mapping urban areas with great accuracy. - CARTOSAT is specifically designed for detailed mapping, making it the best choice for urban areas. It has been extensively used in land-use and urban development studies in India.
Why are the other options incorrect?
- LANDSAT: While LANDSAT satellites are known for providing Earth observation data, their resolution (typically around 30 meters) is not sufficient for very high-resolution urban mapping. - RESOURCESAT: This satellite focuses on resource monitoring and has moderate resolution (around 50 meters), which is not ideal for detailed urban mapping. - MODIS: MODIS provides global coverage with a spatial resolution of around 250 meters, which is useful for larger-scale environmental monitoring but not sufficient for detailed urban mapping.
Thus, the correct answer is Option (B). CARTOSAT is specifically designed for high-resolution mapping, including urban areas.