The most widely used antenna in GPS is Horn antenna Slotted antenna Parabolic antenna Microstrip antenna TRUE ANSWER : ? YOUR ANSWER : ?
Earth observations from a satellite platform provide: Synoptic view of a large area Constant solar zenith angles and similar illumination conditions All of these Repetitive observations of the same area with intervals of a few minutes to a few weeks TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called: None of these Reflectance Reflectance factor Albedo TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following factors does not affect the scale of the air photographs? Flying height None of these Focal length Ground elevation TRUE ANSWER : ? YOUR ANSWER : ?
A perfectly black body: Is a diffuse emitter Absorbs all the radiations of every wave lengths Emits power of every wave length All listed here TRUE ANSWER : ? YOUR ANSWER : ?
Spatial variation in horizontal and vertical directions is caused due to: Biological weathering of rocks Chemical weathering of rocks Physical weathering of rocks All of these TRUE ANSWER : ? YOUR ANSWER : ?
The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is : 24 12 16 8 TRUE ANSWER : ? YOUR ANSWER : ?
'A time varying electric field produces a magnetic field.' This phenomenon is called: Faraday's law Hertz's law Kirchoff’s law Ampere Maxwell's law 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, 4, 3, 1 3, 1, 2, 4 2, 3, 4, 1 1, 2, 3, 4 TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following errors is produced by platform characteristics of the sensor? Altitude Orbit drift All of these Altitude variation TRUE ANSWER : ? YOUR ANSWER : ?