The Remotely Monitored Battlefield Sensor System, Version II (REMBASS-II) is the US Army's type-classified
standard Unattended Ground Sensor (UGS) system that passively detects, classifies, and determines
the direction of travel of intruding personnel and vehicles. REMBASS-II sensors offer exceptionally
reliable performance in all environments, day and night.
REMBASS-II uses three basic sensor transducers (seismic/acoustic, infrared, and magnetic) and
sophisticated signal processing to achieve a high probability of detection with a very low false
alarm rate. When used in conjunction with operator display software, the sensors can be used to
determine the type of target, the number and direction of targets, and estimate their location and
speed.
The sensors communicate target data messages up to 15 km using Low Probability of Intercept/Low
Probability of Detection (LPI/LPD) burst transmissions in the VHF band. Optional relay devices
extend this range 15 km via a radio repeater, 150 km via an Unmanned Aerial Vehicle (UAV) relay,
or worldwide via a REMBASS-II Field Processor Unit (FPU) SATCOM relay (a.k.a., REMSAT).
The REMBASS-II system can accommodate new sensor types (e.g., chemical/biological, radio frequency,
meteorological) with no hardware changes and downloadable software updates.
Target detections are received and displayed on a small Hand Held Monitor (HHM) that is easily
connected to a laptop computer to provide a graphical depiction of target activity using National
Imagery and Mapping Agency (NIMA) digital mapping products.
The program is sponsored by the US Army Product Manager-Robotic & Unmanned Sensors (PM-RUS), Ft. Monmouth, NJ.
| Features | Applications | ||||
 | MIL-Qualified | | ISR Operations | ||
| Proven Target Recognition Performance | | Force Protection | ||
| Reduced Size/Weight | | Special Operations Missions | ||
| Flexible Configuration | | Border Surveillance | ||
| COTS Batteries | | Intrusion Detection | ||
| Built-in Test and Alarms | | Counter Drug Missions | ||
| Anti-Tamper | ||||
| Lowest False Alarm Rate | ||||
| Software Upgradable | ||||
| Simple Operation | ||||
Henry 'Skip' Marsh Jr., Business Development Manager, Unattended Ground Sensors
Robert Lisowski, Business Area Director
