Mobile Sound Ranging Array
The Mobile Sound Ranging Array (MSRA) is a modular passive acoustic system which detects and locates weapons passively by looking for an acoustic emission (like an explosion of grenades or a mortar round leaving the tube) caused by a Rockets, Artillery and/or Mortars (RAM) fired. This in combination with an input of meteorological and terrain data.
The MSRA comprises of at least 10 remotely operated ground Acoustic Multi-Mission Sensors (AMMS Sensor Posts) and a Command Post. A sensor post consists of a single, lightweight, man portable sensor, which is equipped with a Geo-boom. That makes the quick, automatic positioning and orientation possible.
The MSRA is a highly mobile and lightweight system which can be installed quickly anywhere. It has low Size, Weight and Power (SWaP) . The small footprint of the system allows a sensor node to be used on various platforms, such as : reconnaissance vehicle, Perch & Listen Multicopter or as an unattended ground sensor. Typical use would be for the protection of fixed perimeters such as border lines and forward operating bases (FOBs). As the sensors are mobile, fast deployable and modular, they can be configured to work in all areas and environments.
MSRA works in all weather conditions (fog, rain, snow, dust storms, and in the dark). Being in operation, the system provides 24/7 situational awareness.
The passive MSRA can be combined with a narrow beam radar. The two systems can compliment each other well, as unlike radars, acoustics do not require line of sight and is not affected by the weather conditions. Using the radar will only be necessary when a sector alert has been triggered by the MSRA. Crucially, MSRA can be provided with a cabled network that will make it a complete passive system which cannot be detected and jammed like radar.
Although designed as a stand-alone system it will add value to any other sensor-suit. Combining it with a PTZ-camera or ground-surveillance radar means is considerable improvement of the 360 capability of the overall combination. Detection and visual confirmation of an acoustic event provides good input for counter actions within the rules of engagement.
The small footprint of the sensor node allows for alternative ways of deploying. One can think of deploying a network on a vehicle or multi-copter. Ideally one flies a multi-copter to a forward observation position thus improving (acoustic) situational awareness (“Perch and Listen”).
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