Phase 4 Flashcards
Which Command Guidance method has the missile looking back at the launcher in order to centre itself on the electro-optical or RF beam being projected on the target?
Line-of-Sight Beam Rider
What input polarization provides the maximum jamming signal strength for a horizontally polarized receiving antenna?
Horizontal
The change in direction and velocity of a propagating wave front due to its passing from a medium of one density into a medium of a different density” describes what propagation effect?
Refraction
What polarization has the E-field of an EM wave orthogonal (90 degrees) to the E-field of its reference EM wave?
Cross
Which portion of the EM spectrum is of the highest frequency?
Electro-Optics
What term refers to a band of frequencies used for a particular purpose?
Channel
Which of the following is not an advantage of digital communications over analogue?
Requires less bandwidth
“The equivalent of the transmitter power distributed over the Pulse Repetition Interval (PRI)” is which of the following?
Average Power
The greatest range from which target returns are expected to arrive, before the next pulse is transmitted” is the definition of which of the following terms?
Maximum Unambiguous Range
Which extra atmospheric effect is important to a LASER but is not common to other EO sources?
Turbulence
Which of the following Electronic Neutralization techniques may cause mechanical damage from intense heat and expanding plasma?
High-Energy LASER
What is the primary objective of Electronic Deception?
Recreate the target signal and then send a modified signal to the target to give false information
This type of RADAR Absorbent Material (RAM) is composed of many millions of tiny ferromagnetic particles (iron filings) suspended in a polymer resin (paint)” is the definition of which of the following terms?
Ablative RADAR Absorbent Material (RAM)
Which shape gives the greatest RADAR Cross Section (RCS)?
Corner Reflector
What technique deliberately spreads the transmitted intelligence over a very wide frequency band?
Direct Sequence Spread Spectrum (DSSS)
Which of the following is a Scan on Receive Only technique?
Conical Scan Receive Only
What are two types of passive Missile Approach Warning System (MAWS)?
Ultraviolet and Infrared
Military action to exploit the EM (electromagnetic) spectrum encompassing: the search for, intercept and identification of EM emissions, the employment of EM energy, including directed energy, to reduce or prevent hostile use of the EM spectrum, and actions to ensure its effective use by friendly forces “is the definition of which of the following terms?
Electronic Warfare (EW)
Actions taken to prevent or reduce an enemy’s effective use of the EM spectrum through the use of electromagnetic energy” is the definition of which of the following terms?
Electronic Attack (EA)
Which type of guidance method is fire and forget?
Passive Homing
The missile is ignorant of the target’s position and depends totally on commands sent from the launcher, is what type of guidance?
Command
The change in direction and velocity of a propagating wave front due to its passing from a medium of one density into a medium of a different density” describes what propagation effect?
Refraction
What is the dominant effect and frequency range for a sky wave?
Refraction and 300 kHz to 30 MHz
Which communications obstacle may be minimized by physically cooling the
equipment?
Noise
Which of the following is not an advantage of digital communications over analogue?
Requires less bandwidth
Which scan involves the use of one beam that cycles between the two or four narrow lobes?
Sequential Lobing
Which scan type is produced by phased array RADAR and is characterized
by a lack of identifiable characteristics?
Agile Beam
Time between the beginning (leading edge) of one pulse and the beginning of the next pulse” is the definition of which terms? the operator, through both visual and aural methods
Pulse Repetition Interval (PRI)
In an infrared missile, where is the modulation done in order to track the target?
Reticle
Where are unwanted wavelengths filtered in an infrared system?
Optics
What component of a Forward Looking infrared (FLIR) is used to cool the detector to the required temperature to reduce internal noise?
Dewar
What two effects are responsible for the attenuation of infrared radiation as it passes through the earth’s atmosphere?
Absorption and Scattering
“Intelligence concerning foreign technological developments, and the performance and operational capabilities of foreign materiel, which have or may eventually have a practical application for military purposes” is the definition of which of the following terms?
Technical Electronic Intelligence (TECHELINT)
- “Intelligence derived from electromagnetic non-communications systems by other than intended recipients. Examples include RADAR, navigation aids, and jamming transmissions” is the definition of which of the following terms?
Electronic Intelligence (ELINT)
To what size is CHAFF cut to optimize its performance?
Half the wavelength of the target RADAR signal
What are the two basic types of flares?
Pyrotechnic and pyrophoric
This type of RADAR Absorbent Materiel (RAM) slows down the RADAR energy and absorbs it or converts it into thermal energy” is the definition of which of the following terms?
Non-Resonant RADAR Absorbent Material (RAM)
etectable measures, such as altering transmitter parameters as necessary, to ensure friendly effective use of the spectrum” is the definition of which of the
following terms?
Active EP
Which of the following are some of the more commonly used IR switch techniques?
Temporal, Kinematic, Spectral, Spatial
Any equipment that enhances the ability of an aircraft to detect, locate, identify, avoid or defeat threats” is the definition of the following terms?
Defensive Electronic Warfare System (DEWS)
