'''Бистатический гидролокатор''' — [[гидролокатор]], [[приёмник]](и) и [[передатчик]](и) которого разнесены в пространстве на расстояния, сравнимые с расстоянием до цели.
==Bistatic vs monostatic==
===Propagation (transmission) loss===
This is a loss in sound level which happens while the sound pulse travels from projector to target and from target to receiver. There are 3 different mechanisms causing transmission loss: spherical (or cylindrical in shallow water) spreading, absorbing and scattering by ocean media inhomogeneities. Transmission loss (TL) is proportional to range, (the longer the sound travels the more the loss), and to sound frequency.
In monostatic sonar the sound first travels from projector to target, then the same way back from target to receiver, so two-way loss is just 2TL, where TL is one-way loss.
In bistatic sonar the total loss (in decibels) is a sum of TL<sub>pt</sub> (from projector to target) and TL<sub>tr</sub> (from target to receiver).
[[Image:Bistatic sonar dead zone.png|thumb|right|Bistatic sonar dead zone]]