"Gene Storey" writes:

If multistatic radar was deployed and operational, then how come the
US, NATO, France, UK, Japan, and Saudi Arabia invest so much
money in maintaining a "monostatic" AWACS fleet?

As others have pointed out, multi-static radar has its advantages and
disadvantages, in the same way that a large and several small ships
have theirs: and the crucial area that makes the latter of both
examples effective is reliable and instantaneous communications.

That, plus the issues of redundancy and never placing all your eggs in
one basket. No matter what secret frequencies you devise, chances are
about 100% that during system testing stage even these will be picked
up and analyzed by other major powers.

Mitsubishi's bistatic/multistatic radar system currently under
development here at Kyoto University/Amagasaki Mitsubishi has shown
several critical performance problems at closer ranges for given
detection and tracking relaiance criteria, and of course the tecnhical
issues such as pulse-chasing and synchronization are not easy.

But once such issues are removed, then as has been pointed out, any EM
source and receiver could be integrated.
--
G Hassenpflug * IJN & JMSDF equipment/history fan