MARK X (SIF) ATCRBS Computer Processing
U.S. Department of Defense
<a rel="nofollow" class="external text" href="http://www.dtic.mil/dtic/tr/fulltext/u2/619956.pdf">The IFF Mark XII System (DABS/ATCRBS/AIMS) Performance Prediction Model</a>, Page 4-4 (46), Figure 4-2