An Asynchronous SINCGARS (Single Channel Ground and Airborne Radio System) Frequency Hopping Notch Filter Based on Canceller Technology Navy SBIR FY2008.2 Sol No.: Navy SBIR FY2008.2 Topic No.: N08-196 Topic Title: An Asynchronous SINCGARS (Single Channel Ground and Airborne Radio System) Frequency Hopping Notch Filter Based on Canceller Technology Proposal No.: N082-196-0709 Firm: GIRD Systems, Inc. 310 Terrace Ave. Cincinnati, Ohio 45220 Contact: James Caffery Phone: (513) 281-2900 Web Site: www.girdsystems.com Abstract: Navy SIGINT systems are required to receive low level signals in the HF, VHF and UHF frequency bands. The SINCGARS (30-88 MHz) band occupies part of the VHF frequency band where signal reception is required. U.S. Navy ships will have from 2 to 8 SINCGARS transmitters installed, which are used to communicate with shore operational units. SINCGARS (Single Channel Ground and Airborne Radio System) radios use a frequency hopping signal to prevent jamming and interception, which is difficult to remove and prevent electromagnetic interference to the SIGINT receivers. GIRD Systems has developed an innovative approach that is capable of mitigating such SINCGARS interference without needing a copy of the interfering signal. The proposed approach will meet the space and volume requirements. Benefits: The proposed technology will mitigate strong frequency hopping interference without needing a copy of such interfering signal. This technology has direct applications in many military and civilian applications. Simultaneous, co-located operation of communications equipment and sensitive receive systems has been an ongoing problem for the military and private sector for many years. When the program objectives for this SBIR are achieved, the cosite interference mitigation techniques and products developed will be suitable for a wide range of customers, for example the Navy, Army, Air Force, and other military, government and the private sector customers. Return