Elements Of Remote Sensing
The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:

All of these
4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm
0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm
2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm

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Elements Of Remote Sensing
Which one of the following residual biases involves the GPS accuracy?

Signal propagation biases due to the sphere and troposphere propagation
Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
All listed here
Receiver-dependent biases due to clock stability with line

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Elements Of Remote Sensing
Geodimeter is based on:

Propagation of modulated light waves
The visible light as carrier with frequency of the order of 5 × 1014 Hz
Propagation of infrared radiation
High frequency radio waves

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