Sound ranging

The sound measurement technique is a method for locating artillery by measuring the transit time differences of sound between microphone measurement locations.

The measuring system is based on a measurement base width of about 10 km, where the captured through accurate microphones sound events are transmitted to a central analysis, where they are held in place with a storage oscilloscope, which is similar to an ECG device.

The measurement of the time differences leads to localization of the sound event. The range of sound measurement is (weather permitting) up to 20 km. The method of sound measurement is an essential reconnaissance for the " general fire fight ", ie the fight against enemy artillery in combat.

This localization methods ( incorrect called locating method ) provides a "passive " Enlightenment means is that compared to the mostly used " active " Enlightenment has the advantage of "non- emmissiv " and thus by the enemy not to be fernaufklärbar because no private signal as the active Radar system, is transmitted. The arrival times and in particular their difference from each other, coupled with precise measurement of the own position, permit from the measured variables of the sound velocity at measured temperature and pressure at the measurement time, both the exact distance measurement ( echolocation ) and the direction detection, and from this the origin of the target size.

The development and mass production of the system was completed as early as World War II and was in the front line in terms of sound and light measurement units in addition to the artillery reconnaissance and in the air defense coordination in the Wehrmacht first probation.

This system, used by the German army in a modernized form, and the Dutch army.

This one comes in a reconnaissance battery integrated Schallmesszug used. This consists of two Schallmessvorwarntrupps with two Mercedes (Wolf) - terrain vehicles.

This Vorwarntrupps solve six lying behind microphones that are built a few kilometers away (6 cabins measuring Daimler -Benz 5 -ton LG 315). The thus collected signals are transmitted by radio to a Auswertekabine (Mercedes- Benz NG) and evaluated there.

The system can ( gun etc. ) locations to within a meter exactly the position of a bang.