EO 9 Flashcards
(48 cards)
Electronic Warfare (EW)
Ensure the effective use of the electromagnetic spectrum to friendly forces while denying its use to the enemy.
What are the 3 methods, or divisions, of EW?
Electronic Attack (EA), Electronic Protection (EP), Electronic Support (ES)
Electronic Attack (EA)
involves the use of EM-directed energy, or anti-radiation weapons to attack personnel, facilities, or equipment with the intent of deceiving, disrupting, denying, or destroying an adversary’s combat capability.
Electronic Protection (EP)
Actions taken to attempt to retain use of its electromagnetic equipment, despite the attacking force’s use of EW
Electronic Support (ES)
The actions taken to search for, detect, localize, and identify sources of radiated electromagnetic energy for tactical purposes
EA includes attacks on all types of enemy radars and communications such as;
Jamming, Chaff, Anti-Radiation weapons, and high power radiation.
Jamming
Involves the transmission of undesired signals into enemy recievers with power levels and modulations such that the ability of the receiver to receive and process it’s desired signals is degraded.
What are the types of jamming targets?
Radar and Communications
Where can the jammer be located?
On the radar target or remote from target
What are the approaches of jamming?
Cover jamming and deceptive jamming
Cover Jamming
Reduces adversary radar’s ability to detect target
What type of noise modulated signals are used in both radar and communications jamming applications?
Cover Jamming signals
Deceptive Jamming
Adversary radar sees the return as good, but calculated range or angle is incorrect.
What 2 concepts deal with the effectiveness of jamming?
Jamming-to-Signal Ratio (J/S), Burn-Through Range
Self-Protection Jamming
Involves the transmission of jamming signals from an asset to protect itself from detection, tracking, or fusing by hostile radar.
Jamming-to-Signal Ratio (J/S)
The ratio between the receive power of the jammer and the desired signal in the target receiver.
Remote Jamming
Involves the transmission of jamming signals from some other location than that of the target of the hostile radar.
Burn-Through Range
The distance from the radar at which the radar can reacquire a target which has been protected by jamming.
Chaff
Refers to small metal pieces of aluminum foil or metalized fiberglass that are cut to lengths which allow them to optimally rebroadcast radar signals.
Flares
Expendable devices which protect aircraft from heat seeking missiles.
Anti-radiation weapons
Home in on signals transmitted from hostile emitters.
High Power Radiation
A technique that involves extremely high levels of transmitted power; three or more orders of magnitude greater than would be required to jam a reciever. (Can be either from lasers or RF transmitters)
What is the purpose of high power radiation?
To destroy a hosile platform or to destroy an enemy sensor.
Noise Jamming (Confusion Jamming)
Techniques are used to change the EM environment by transmitting large amounts of power (i.e. noise) within a portion of the spectrum.
