Passive radar systems are currently under development in several commercial organizations.

In a passive radar system, there is no dedicated transmitter.

The key processing step in a passive radar is cross-correlation.

Passive radar depends upon the object sending a signal to the receiver.

The smudge on the passive radar display held its relative position, slowing as they did.

The Block 0's passive radar homing capabilities have been retained.

Passive radar says there's something following us, about thirty thousand klicks astern.

Passive radar systems have been developed that exploit the following sources of illumination:

Passive radar performance is comparable to conventional short and medium range radar systems.

A passive radar typically employs the following processing steps:

Any radar which does not send active electronic magnetic pulse is known as passive radar.

A passive radar system must detect very small target returns in the presence of very strong, continuous interference.

Without careful processing, the net result for a passive radar is like multiple repeater jammers.

Kh-31P passive radar seeker missiles are used as anti-radiation missiles.

Also, passive radar and maybe lider might be used, avoiding the power and legal issues of sending a signal.

Alim is the first Iranian passive radar.

Passive radar is applicable to electronic countermeasures and radio astronomy as follows:

A passive radar is characterised by not emitting any form of radiation, i.e., it uses the signals present in the environment.

Passive radar systems use digital receiver systems which output a digitized, sampled signal.

Several passive radar systems make use of multiple spatially diverse transmitters and hence may be considered to operate multistatically.

The missile used a 2PRG-11 passive radar seeker.

The concept of passive radar detection using reflected ambient radio signals emanating from a distant transmitter is not new.

"Passive radar.

Short-range missiles, for example, can be guided by laser, active or passive radar, infrared, millimetre waves, fibre optics, and so on.

Normally the missile would use a passive radar seeker and home on shore-based and ship-based radars.