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प्रश्न
Distinguish Between Aerial photographs and satellite imageries.
अंतर स्पष्ट करें
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उत्तर
| Aerial photographs | Satellite imageries |
| It covers a small area and needs permission from the authorities. | It allows global coverage and does not require permission. |
| Revisits or repeatability involves extra cost. | Satellites circle the Earth; they can repeat and revisit easily. |
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Remote Sensing as a Source of Map Data
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