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A system of wires or other conductors that is elevated above and insulated from the ground to form a lower system of conductors for an antenna. Also known as antenna counterpoise.



Related Terms

CAPACITANCE-OPERATED INTRUSION DETECTOR

A boundary alarm system in which the approach of an intruder to an antenna wire encircling the protected area a few feet above ground changes the antenna-ground capacitance and sets off the alarm.

COMPENSATED LOOP RADIO DIRECTION FINDER

A loop antenna radio direction finder for bearing determination, which incorporates a second antenna system designed to reduce the effect of polarization and radiation error.

FIXED ANTENNA RADIO DIRECTION FINDER

A radio direction finder whose use does not require the rotation of the antenna system

LOOP ANTENNA

A closed circuit antenna in the form of a loop, lying in the same plane, or of several loops lying in parallel planes.

IDENTIFICATION FRIEND OR FOE

A system using pulsed radio transmissions to which equipment carried by friendly forces automatically responds, by emitting a pulse code, thereby identifying themselves from enemy forces; a method of determining the friendly or unfriendly character of aircraft, ships, and army units by other aircraft, ships, or ground force units. Abbreviated IFF.

DIFFERENTIAL PROCESS

A process in which a system is caused to move through a bubble point and as a result to form two phases, the minor phase being removed from further contact with the major phase; thus the system continuously changes in quantity and composition.

CONSOL STATION

A short baseline directional antenna system used to generate Consol signals

COOPERATIVE SYSTEM

A missile guidance system that requires transmission of information from a remote ground station to a missile in flight, processing of the information by the missile-borne equipment, and retransmission of the processed data to the originating or other remote ground stations, as in azusa and dovap.

NUTATING ANTENNA

An antenna system used in conical scan radar, in which a dipole or feed horn moves in a small circular orbit about the axis of a paraboloidal reflector without changing its polarization.

FIRST LAW OF THERMODYNAMICS

The law that heat is a form of energy, and the total amount of energy of all kinds in an isolated system is constant; it is an application of the principle of conservation of energy.

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