On a radarscope, a deflection or spot of contrasting luminescence caused by an echo, i.e., the radar signal reflected back to the antenna by an object. Also called PIP, ECHO, RETURN.



Related Terms

ECHO

  1. A wave which has been reflected or otherwise returned with sufficient magnitude and delay to be perceived. 2. A signal reflected by a target to a radar antenna. Also called RETURN. 3. The deflection or indication on a radarscope representing a target. Also called PIP, BLIP, RETURN.

ANTENNA BEARING

The generated bearing of the antenna of a radar set, as delivered to the indicator

SEARCH AND RESCUE RADAR TRANSPONDER

An electronic device which transmits a homing signal on the radar frequency used by rescue ships and aircraft.

PRIMARY RADAR

  1. Radar which transmits a SIGNAL and receives the incident energy reflected from an object to detect the object. 2. As defined by the International Telecommunications Union (ITU), a radiodetermination system based on the comparison of reference signals with radio signals reflected from a position to be deter- mined.

DOPPLER RADAR

Any form of radar which detects radial motion of a distant object relative to a radar apparatus by means of the change of the radio frequency of the echo signal due to motion.

HORIZONTAL SCANNING

In radar scanning, rotating the antenna in azimuth around the horizon or in a sector. Also known as searching lighting.

MONOPULSE RADAR

Radar in which directional information is obtained with high precision by using a receiving antenna system having two or more partially overlapping lobes in the radiation patterns.

ACQUISITION AND TRACKING RADAR

A radar set capable of locking onto a received signal and tracking the object emitting the signal; the radar may be airborne or on the ground.

ELECTRONICALLY AGILE RADAR

An airborne radar that uses a phased-array antenna which changes radar beam shapes and beam positions at electronic speeds.

RAIN CLUTTER

Clutter on the radarscope which is the result of the radar signal being reflected by rain or other forms of precipitation.

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