For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is: 130 km 500 km 230 km 250 km TRUE ANSWER : ? YOUR ANSWER : ?
Who coined the term, ‘Remote sensing’. Wilbur Wright, an Italian scientist Gaspard Felix Tournachon, a French scientist Evelyn L. Pruitt, a geographer None of these TRUE ANSWER : ? YOUR ANSWER : ?
A passive sensor uses: None of these Its own source of energy Flash light as a source of energy Sun as the source of energy TRUE ANSWER : ? YOUR ANSWER : ?
The object of photo-interpretation is: All of these Recognition of objects Judging the significance of objects Identification TRUE ANSWER : ? YOUR ANSWER : ?
Electromagnetic spectrum contains: Ultraviolet rays (wave length < 10⁻⁶ m) Infrared rays (wave length < 10⁻⁴ m) All of these Gamma rays (wave length < 10⁻¹⁰ m) TRUE ANSWER : ? YOUR ANSWER : ?
Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena: Vegetative cover Snow cover All of these Cloud evolution TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following frequency regions is a part of sun's radiation? Radio frequency region Infrared frequency region All of these Ultraviolet frequency region TRUE ANSWER : ? YOUR ANSWER : ?
The coherence length over which there is a strong relationship between amplitudes is; The square of the bandwidth None of these Inversely proportional to the bandwidth Directly proportional to the bandwidth TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct? C = λ/v C = v + λ C = 1/λv C = vλ TRUE ANSWER : ? YOUR ANSWER : ?
The various stages occuring in GPS system are described below:<br/>1. Generation of an output to the user<br/>2. Detection of the GPS signals<br/>3. Processing the data in the built-in-computer<br/>4. Decoding the GPS signal.<br/>The correct sequence of the stages is: 2, 3, 4, 1 3, 1, 2, 4 2, 4, 3, 1 1, 2, 3, 4 TRUE ANSWER : ? YOUR ANSWER : ?