Abstract: A CBRNE detection system and method for operating same are disclosed. The method provides a relatively increased Probability of Detection and a relatively decreased Probability of False Alarms for a networked system of detectors. In the illustrative embodiment, a central controller of the system is capable of receiving information from individual CBRNE detectors and of determining whether or not to issue an alarm indicating that a CBRNE event has occurred. Data obtained from individual CBRNE detectors is evaluated based on one or more “sensor alert-to-system alarm” processing modes. The various processing modes specify the requirements that must be satisfied before a system-wide “alarm” is issued.

Abstract: An apparatus and methods for improving the ability of a detection system to distinguish between a “true attack” as opposed to a nominal increase in a monitored environmental characteristic.

Abstract: A CBRNE detection system and method for operating same are disclosed. The method provides a relatively increased Probability of Detection and a relatively decreased Probability of False Alarms for a networked system of detectors. In the illustrative embodiment, a central controller of the system is capable of receiving information from individual CBRNE detectors and of determining whether or not to issue an alarm indicating that a CBRNE event has occurred. Data obtained from individual CBRNE detectors is evaluated based on one or more “sensor alert-to-system alarm” processing modes. The various processing modes specify the requirements that must be satisfied before a system-wide “alarm” is issued.

Abstract: An apparatus and methods for improving the ability of a detection system to distinguish between a “true attack” as opposed to a nominal increase in a monitored environmental characteristic.

Abstract: An autonomously-cleaned conditioning system conducts a routine purge cycle to clear accumulated particulates from a filter, concentrator, or both. The purge cycle is conducted by reversing air flow through the filter and/or concentrator. Air flow is reversed on a periodic basis or on the occurrence of a condition, such as a reduction in air flow exiting the concentrator.

Abstract: A shell structure for a collinear coaxial element array antenna is made of electrical conducting material and includes first and second circular sections separated by a web. The first circular section has an inner diameter that is slightly larger than the diameter of an inner conductor in a coaxial line element of the array antenna, while the second circular section has an inner diameter that is equal to that of an outer conductor of a coaxial transmission line element. The separations of the centers of the first and second circular sections are established by the wed to be equal to the distance between the centers of two adjacent coaxial transmission line elements in the array antenna. The inner conductor of a coaxial transmission line element is inserted in the first circular section and is electrically connected thereto.