Performance Grade
Micro-electromechanical systems engineered for intermediate precision levels offer specific stability and noise characteristics required for short-term navigation and stabilization tasks. A tactical mems device sits between lower cost automotive sensors and high end navigation grade instruments. The class of sensor is widely utilized in guided munitions, autonomous vehicles, satellites and antenna pointing systems.
Bias Stability
Instability usually falls within the range of one to ten degrees per hour for these units. A tactical mems sensor must also demonstrate low angle random walk to ensure that noise does not overwhelm the signal during integration. Manufacturers achieve this performance by using larger proof masses and advanced signal conditioning electronics compared to commercial variants.
The packaging often includes internal damping or specialized potting compounds to protect the delicate silicon structures from external shocks.
Navigation Task
Systems rely on these sensors to maintain a heading for minutes rather than hours. When paired with external references like global positioning systems, a tactical mems package can provide a continuous solution through signal outages.
Sophisticated Calibration
Sophisticated factory calibration procedures characterize the output across the entire operating temperature range. The models are stored in internal memory and applied automatically to minimize the impact of thermal gradients on the reported rate and acceleration.
