HF Canceller

MagiQ Technologies is ideally positioned to develop a system to cancel the co-site transmissions the Navy is experiencing at HF frequencies (2-30MHz).  In order to maximize transmission of data and generally promote multidirectional connectivity between many points there is an urgent need to receive weak signals at frequencies that are interspersed closely in frequency between active powerful transmitters on the ship.  Unfortunately, the receive antennas pick up these co-sited transmissions at extremely powerful levels, and they tend to overwhelm the receive chains and their analog-to-digital converters, leaving them unable to receive the weak signals they could normally receive if the transmitters were off.    The best solution to this problem is to use a cancellation system. MagiQ Technologies has more than 10 years of development expertise in this area.  We have executed on 4 Phase II SBIRs in directly related topics.  We have also executed on two RIF programs to cancel signal both with and without a tapped reference. The use of a referenced canceller provides a great operational advantage in that much more of the received spectrum can actually be utilized for reception. This is mainly because large chunks of received spectrum do not have to be obliterated by notches intended to block unwanted noise from local transmitters.  At the same time the transmitters can continue the important work of relaying critical messages without having to stop to allow the receivers to listen.