MostaTech has introduced the VG2103SD, a new digital-output Fiber Optic Gyroscope (FOG) that extends the capabilities of its proven VG2103S series.
Built upon the rugged and high-performance platform of the VG2103S, the new VG2103SD offers digital integration while maintaining the same physical size, durability, and precision of the original series. The VG2103S series has been in production since 2021 and was engineered for demanding applications, including flight control, platform stabilization, unmanned vehicles, autonomous agriculture systems, and other inertial platforms requiring high ruggedness and accuracy.
The FOGs in the series feature a compact 60 × 60 × 17 mm aluminum-alloy housing and weigh approximately 80 g. Performance parameters for the original VG2103S include a typical bias stability of around 1°/h and an Angular Random Walk (ARW) of 0.02°/√h. The units are designed for harsh environments, capable of withstanding shocks up to 1200 g and vibration up to 18 g RMS. They operate across a wide temperature range, from -40°C to +70°C, with optional variants extending the upper limit to +85°C or +125°C. The series also features an ITAR-free design, intended to facilitate broader global deployment without export constraints.
A variant, the VG2103S-3000, offers enhanced shock resistance up to 3000 g, slightly increased weight of approximately 85 g, and an ARW of about 0.03°/√h, all while maintaining the same footprint.
The new VG2103SD merges the core optical architecture and robust package of the VG2103S series with a digital output interface designed for real-time platforms. It provides a digital output interface delivering 24-bit data via RS-422, with a data rate of up to 8 kHz. Bandwidth and noise improvements offer an ARW as low as approximately 0.015°/√h and a dynamic range up to ±400°/s. It maintains the 60 × 60 × 17 mm mechanical package and the same mounting footprint as earlier VG2103S models. The environmental endurance for the VG2103SD matches the vibration capability of up to 18 g RMS, although its shock endurance is rated lower, up to 350 g.
