Tactical HF SIGINT/ Geolocation Systems Tackle Elusive Challenges

摘要

The article reports that high frequency (HF) a band for tactical communications by near-peer adversaries has been used by military and para-military organizations. The task of detecting and geolocating HF signals has posed challenges unlike other radio frequency (RF) signals such as VHF and UHF, HF signals not only follow line-of-sight paths, but also bounce off of the Earth's ionosphere.