Under Close Watch | Baltimore's video surveillance
Tele-Tector of Maryland Inc., Columbia, Md., designed the fiber backbone of the system and served as project manager. Many of the city's surveillance cameras and all of its housing cameras are wireless. “We don't have optic fiber running under the streets with our expansion outside the main downtown area,” Hart says. “We cannot be trenching for blocks and blocks, so DVTel's combination of wired and wireless technology was very appealing to us.” Wireless camera signals from groups of cameras are brought back to a fiber node, and then video signals travel by fiber back to the DVTel head end.
All camera feeds are available at the central command center via an 800-MHz ring around the city, to which all the neighborhood and housing cameras are connected. The fiber ring has a portion solely dedicated to surveillance use.
In addition to the permanent PTZ cameras, Baltimore police have another innovative tool in their surveillance arsenal, the Portable Overt Digital Surveillance System (PODSS) cameras from RMS Technology Solutions, Buffalo Grove, Ill. The temporary, “in-a-box” cameras can be deployed in a short time to monitor any location. A visit with Baltimore Police Officers Ed Mendez and John Corona found them monitoring a PODSS camera fixed high upon a light pole focused on Mama's Grocery in the Eastern District. Lt. Matthew J. Bauler, who has been with CitiWatch since its inception, says that in the days prior to the camera installation, the area outside of Mama's Grocery was teeming with drug activity. Once the PODSS unit was installed and the blinking purple lights on top of the cameras were visible, the camera feed showed no one outside of the store.
Officers Mendez and Corona demonstrated how they are able to park their squad car a few blocks away from the PODSS unit and, by maintaining line-of-sight for their wireless receiver, monitor the activity shown by the camera from within their car. The police department's 107 PODSS units receive power from the light pole and come equipped with a digital hard drive that can be swapped out for downloading and review.