Targeting high-precision satellite pointing, orientation determination, and stabilization requirements in low Earth orbit (LEO), Silicon Sensing Systems Ltd released its new Zenith closed-loop accelerometer on August 24, 2026.
The single-axis micro electro-mechanical systems (MEMS) sensor delivers a radiation-tested hardware alternative to custom space components for commercial smallsat and CubeSat operators.
Technical Specifications and Hardware Architecture
The Zenith sensor series—designated as CAS150 and CAS170—leverages radiation-tested MEMS architecture field-proven across LEO missions. Engineered to operate within severe vacuum conditions, the maintenance-free unit is hermetically sealed and factory-calibrated across its full operating temperature gradient.
Key hardware parameters of the platform include:
- Sensing Configurations: Manufactured in in-plane (CAS150) and orthogonal (CAS170) sensing orientations, enabling multi-axis linear acceleration measurement on a single printed circuit board assembly (PCBA).
- Dynamic Range and Noise Performance: Delivers a dynamic range of ±14g with low noise spectral density, providing significant noise reduction compared to the company’s legacy Gemini sensor series.
- Form Factor and Integration: Surface-mountable, compact physical enclosure optimized for low power consumption without sacrificing signal clarity.
The product introduction expands Silicon Sensing’s spaceflight portfolio, building upon previous spaceborne deployments including CAS accelerometers on Space Forge’s ForgeStar-1 on-orbit manufacturing satellite and tactical-grade gyroscopes for harsh environments.
Executive Leadership Viewpoint
“Zenith represents a valuable new alternative for the space market, particularly in applications such as satellite orientation, stabilisation and pointing,” said Kevin Swain, Head of Sales and Business Development at Silicon Sensing Systems Ltd. “It offers a particularly valuable combination of field-proven technology and low power consumption, packaged in a compact, lightweight and hermetically sealed unit.”
Market Integration Outlook
Silicon Sensing—a joint venture between Collins Aerospace and Sumitomo Precision Products established in 1999—is making the Zenith accelerometer available immediately to satellite manufacturers and attitude determination and control system (ADCS) integrators. The sensor is intended to reduce lead times and non-recurring engineering costs for commercial constellations requiring long-endurance precision guidance and stabilization.
