1. The MITRE Corporation, 1155 Academy Park Loop, Colorado Springs, CO 80910, USA
2. Physics and Energy Sciences Department, University of Colorado at Colorado Springs, 1420 Austin Bluffs Parkway, Colorado Springs, CO 80918, USA
3. Electrical and Computer Engineering Department, U.S. Air Force Academy, 2354 Fairchild Dr., Suite 2F6, Colorado Springs, CO 80840, USA