Q. 4 B5.0( 2 Votes )

Explain the vario

Answer :

● Target – It is an object that is being imaged.

● Energy source – It provides electromagnetic energy to the target. Energy source can be classified into two

1. Passive system – it is the radiance from the sun

2. Active system – it is the radiance from artificially generated energy sources such as radar

● Transmission path – it is used as a medium to transfer the radiance from the energy source to the target

● Sensor – It is a crucial component; it is a device which detects the electromagnetic radiation. There are two types of sensors, passive sensors, and active sensors. While passive sensors detect the natural radiation that is emitted from an object, active sensors transmit their own signal and measure the energy that is reflected.

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