Challenges to using ground based sense and avoid (GBSAA) for UAS operations

• What is Sense and Avoid (SAA) • What is Ground Based Sense and Avoid (GBSAA) — Intended Function — Where GBSAA may be useful — GBSAA Terminology • Display options and issues • Sensors and Data Sources • SAA Airworthiness • Safety Assessment for SAA systems/equipment • Discussion — Army GBSAA Concept at El Mirage CA — USMC GBSAA Concept at Cherry Point NC