Frequency diversity refers to the use of complementary
radar transmissions or multiple radar systems operating cooperatively at different
frequencies. Frequency diversity normally relates to multiple radar
sites coordinated in such a way as to achieve the
frequency management task. Single radar systems operating with multiple beams
can operate with frequency diversity between the beams.
diversity, like frequency agility, forces the jammer into
an undesirable bandwidth situation. The jammer can either attempt to
jam through the entire operating bandwidth of the suite of
radars (barrage jamming) or choose individual radars to jam (spot
or sweep jamming).
There are practical limitations associated with frequency diversity. The cost of operating multiple sites is often
prohibitive. Frequency management is critical and often difficult to achieve.
Failure to manage the frequency diversity results in
powerful mutual interference between the radar sites. The options associated
with frequency diversity are limited by the individual
radar characteristics. The practical operating bandwidth is also limited.
Other topics in our resources on Radar related to Frequency Diversity include: