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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Cognitive Radar
RF Cafe Quiz #29

RF Engineering Quizzes - RF CafeAll RF Cafe Quizzes make great fodder for employment interviews for technicians or engineers - particularly those who are fresh out of school or are relatively new to the work world. Come to think of it, they would make equally excellent study material for the same persons who are going to be interviewed for a job. Bonne chance, Viel Glück, がんばろう, buena suerte, удачи, in bocca al lupo, 행운을 빕니다, ádh mór, בהצלחה, lykke til, 祝你好運. Well, you know what I mean: Good luck!

Click here for the complete list of RF Cafe Quizzes.

Note: Some material based on books have quoted passages.

RF Cafe - Cognitive Radar: The Knowledge-ided Fully Adaptive Approach This quiz is based on the information presented in Cognitive Radar: The Knowledge-aided Fully Adaptive Approach , by Joseph R. Guerci. Published by Artech House.

 Note: Some of these books are available as prizes in the monthly RF Cafe Giveaway.

1.  What is meant by "cognitive" radar?

a)  Ability to ignore non-relevant to enhance relevant targets

b)  Ability to display all targets

c)  Using cogs and cams for antenna drive

d)  Using static database for object de-cluttering

2.  What are 3 examples of applications for cognitive radar?

a)  Removal of heterogeneous clutter, manmade structures, non-stationary electronics sources

b)  UAV control, moon-bounce ranging, border protection

c)  Explosives detection, mm-scale measurement, food preservation

d)  Weather forecasting, cancer treatment, active denial

3.  What is an intelligent method to overcome memory access latency problems?

a)  Use faster data bus

b)  Use more memory

c)  Use faster processor

d)  Use look-ahead prediction

4.  What does the acronym SINR stand for?

a)  SIgnal Nulling and Ranging

b)  Signal-to-Interference-plus-Noise Ratio

c)  Static Incidental Noise amelioRation

d)  SImple Nodal Reduction

5.  What is signal "whitening?"

a)  Electronically "bleaching" a signal

b)  Applying the algorithm devised by A.D. White

c)  Making the target brighter on the radar display

d)  Removing the "color," or non-randomness components of noise

6.  How does multipath affect a radar signal?

a)  False range measurements

b)  False speed measurements

c)  Ghost images

d)  All of the above

7.  What is a primary feature of MIMO (Multi-Input-Multi-Output) radar?

a)  Both Tx and Rx are optimized

b)  Multiple inputs

c)  Multiple outputs

d)  Low power requirement

8.  Which channel characteristics generally depend on the transmit spatio-temporal signals?

a)  Transmit-dependent channel estimation

b)  Receive-dependent channel estimation

c)  Channel ordering

d)  Pulse repetition interval (PRI)

9.  What information does Doppler provide?

a)  Direction

b)  Speed

c)  Altitude

d)  Rotation

10.  Who is the author of "Cognitive Radar?" (don't look back at the top of the page)

a)  Alberto Gomez

b)  Arthur Blatt

c)  Joseph Guerci

d)  Robert Pease

Need some help? Click here for the answers and explanations.

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