The Air Force Research Laboratory's Information Directorate (AFRL/IF) has established the Concealed Weapons
Detection/Through Wall Surveillance Test & Evaluation (CWD/TWS T&E) Facility to accomplish in-depth analysis of
technologies applicable to identified Law Enforcement (LE) and Corrections operational and situational functional
requirements. This CWD/TWS T&E Facility is capable of performing T&E on all technologies that have been proposed
to accomplish these functions. The current technology focuses are: for CWD, passive and acoustic operations; for TWS,
active radio frequency (RF) and acoustic operations. However, this T&E Facility can be easily adapted for analysis of
other technology application prototypes. The technology prototypes that are in existence have been developed primarily
through direct support from the Department of Justice (DOJ), National Institute of Justice (NIJ) Office of Science &
Technology (OS&T). Additionally, Statements Of Need (SON) from US National and State LE and Corrections
agencies, along with market indicators, have driven commercial institutions to research and investigate the feasibility of
adapting their technology applications for utilization to address the CWD and/or TWS challenges. This paper will
highlight the unique capabilities of this Facility. These being: T&E of CWD/TWS devices against NIJ specified
requirements; Characterization of CWD/TWS devices performance; Characterization of the constructed walls for TWS;
and Representative test setups for CWD/TWS testing.
The Air Force Research Laboratory Information Directorate (AFRL/IF), under sponsorship of the Department of Justice's (DOJ), National Institute of Justice (NIJ) Office of Science and Technology (OS&T), is currently developing and evaluating advanced Through the Wall Surveillance (TWS) technologies. These technologies are partitioned into two categories: inexpensive, handheld systems for locating an individual(s) behind a wall or door; and portable, personal computer (PC) based standoff systems to enable the determination of events during critical incident situations. The technologies utilized are primarily focused on active radars operating in the UHF, L, S (ultra wideband (UWB)), X, and Ku Bands. The data displayed by these systems is indicative of range (1 Dimension), or range and azimuth (2 Dimensions) to the moving individual(s). This paper will highlight the technologies employed in five (5) prototype TWS systems delivered to NIJ and AFRL/IF for test and evaluation. It will discuss the systems backgrounds, applications, current states of evolution, and future plans for enhanced assessment.