Location and Environment Awareness MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Location and Environment Awareness, a fundamental topic in the field of Cognitive Radio. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Location and Environment Awareness MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Location and Environment Awareness mcq questions that explore various aspects of Location and Environment Awareness problems. Each MCQ is crafted to challenge your understanding of Location and Environment Awareness principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Cognitive Radio tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Location and Environment Awareness MCQs are your pathway to success in mastering this essential Cognitive Radio topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Location and Environment Awareness. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Location and Environment Awareness knowledge to the test? Let's get started with our carefully curated MCQs!

Location and Environment Awareness MCQs | Page 5 of 7

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Q41.
In ____ approach, the distance between two cognitive radios is found by estimating ____ information.

a.

cooperative location awareness, triangulation

b.

cooperative location awareness, ranging

c.

composite location awareness, triangulation

d.

composite location awareness, time of flight

Discuss
Answer: (b).cooperative location awareness, ranging Explanation:In cooperative location awareness approach, a cognitive radio transmits a signal through channel environment. Another radio obtains ranging information from the received signal.
Q42.
In cooperative location awareness, the transmitter and the receiver are ____

a.

nottime reliant

b.

not duplex

c.

not co-located

d.

not active

Discuss
Answer: (c).not co-located Explanation:In cooperative location awareness, individual radios are used for transmission and reception. The transmitter and the receiver are not co-located. It is accomplished by cognitive positioning system.
Q43.
____ is the first step in cognitive ranging protocol.

a.

Ranging parameter set up

b.

Angle of arrival set up

c.

Line of sight determination

d.

Meteorological determination

Discuss
Answer: (a).Ranging parameter set up Explanation:Cognitive ranging protocol has three steps namely ranging parameter set up, two-way time of arrival ranging, and time stamp report. The ranging parameter set up stage is otherwise known as a loop stage.
Q44.
What is the minimum number of radios required for cooperative location awareness?

a.

One

b.

Two

c.

Three

d.

Four

Discuss
Answer: (b).Two Explanation:In cooperative location awareness, at least two radios are required for operation. Before ranging, the two radios bargain or offer feedback to each other during the ranging parameter setup stage. The next step is to carry out two way ranging.
Q45.
In ____ approach, transmitter and receiver are co-located.

a.

active self-location awareness

b.

passive self-location awareness

c.

active cooperative location awareness

d.

passive cooperative location awareness

Discuss
Answer: (a).active self-location awareness Explanation:Self location awareness may be active or passive. In active self-location awareness, transmitter and receiver are used. The transmitter and receiver are co-located. Cognitive radar is an example of this approach.
Q46.
____ may be used in passive self-location awareness approach.

a.

Cognitive sonar

b.

Image sensor

c.

Infrared sensor

d.

Hall sensor

Discuss
Answer: (b).Image sensor Explanation:Passive self-location awareness approach involves observing the environment and capturing desired signals without transmitting signals into the environment. Human vision is an example of the approach in nature.
Q47.
The closed loop feedback exists ____

a.

between transmitter and environment

b.

between receiver and environment

c.

between transmitter and receiver

d.

among transmitter, environment, and receiver

Discuss
Answer: (d).among transmitter, environment, and receiver Explanation:The implementation of closed loop feedback is simplified by co-located transmitter and receiver in self-location awareness. Thus achieving feedback loop is simpler in self-location awareness than in cooperative location awareness.
Q48.
Self-location awareness offers ____

a.

only absolute ranging

b.

only relative ranging

c.

only non-relative ranging

d.

only absolute ranging and non-relative ranging

Discuss
Answer: (b).only relative ranging Explanation:Self-location awareness provides only relative ranging information. Cooperative location awareness provides absolute and relative ranging and positioning information because they are not co-located.
Q49.
Bat echolocation systems employ ____ modulation.

a.

amplitude

b.

frequency

c.

phase

d.

amplitude shift keying

Discuss
Answer: (b).frequency Explanation:Bat echolocation system is an example of range accuracy adaption systems. It uses frequency modulation during emission to identify the target in its path.
Q50.
Bat echolocation system _____ on moving close to the target.

a.

increases transmitted signal duration

b.

increases transmitted signal bandwidth

c.

decreases transmitted signal duration

d.

decreases transmitted signal bandwidth

Discuss
Answer: (c).decreases transmitted signal duration Explanation:Bat echolocation systemadjusts emitted sound duration, bandwidth, and repetition rate during the process of target identification. It decreases transmitted signal duration on moving close to the target.
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