Communication is achieved using a gigabit ethernet interface, with extra TTL input/outputs available via the mil-spec power connector.
A number of these modules can be combined using an Ethernet switch and are designed to be daisy chained together to produce larger arrays.
Alternatively arrays can be created using switches within the antenna system however this is only possible with the low peak power signals used in our technology. It is not possible to switch impulse GPR technology due to the high peak voltages involved. This enables the creation of large antenna arrays, even with just one radar module (there is however a compromise with the speed of collection).
External antennas can be switched either using the 4 level controllable DC voltage available on each of the receiver and transmitter output, or the spare TTL output on the mill-spec output connector. These voltages can also power the front end amplifiers for both the transmitters and receivers.