Shipboard HF Interference - Problems and Mitigation

Co-site HF interference on shipboard is becoming more acute because of emerging requirements that call for simultaneous transmissions with anti-jam and frequency-hopping formats. This paper quantifies several interferers and suggests ways to improve transmission. They include self steering, low-level filters, linearized transmitters, intermod cancellation, improved transmitter-antenna coupling, time-disciplined data transmission, and the exploitation of other new HF hardware developments.