DMC-pico: Ultra-Fast North Finding for Time-Critical Military Applications

In many tactical scenarios, systems cannot wait several minutes for north finding initialization or rely on GNSS that may be jammed or spoofed. In such time-critical situations, the DMC-pico Digital Magnetic Compass from Ultisense provides an efficient solution. In the article below, we highlight the extremely short start-up time of the DMC-pico the benefits it offers for complex military systems.

More about GNSS here: No GNSS? Use Digital Magnetic Compass (DMC) as reliable back-up

Why Short Start-Up Time Matters

Many military platforms rely on inertial north finding systems and GNSS-assisted navigation While highly capable, these technologies come with significant limitations, including vulnerability to jamming and spoofing. Additionally, these systems often require long start-up and initialization times. If they are not maintained in standby mode, they may not be ready to provide heading information immediately when needed. In many tactical scenarios, however, time for initialization simply is not available.

Bridging Critical North finding Gaps

The DMC-pico, by contrast, delivers an extremely short start-up time of only 75 milliseconds, enabling to immediately provide reliable azimuth data. It serves as an ideal complement to existing north finding systems, bridging the operational gap while non-magnetic north finding sensors power up or complete their self-alignment procedures. This rapid readiness eliminates delays caused by lengthy initialization processes and ensures that the host system remains mission-ready without interruption.

Power Efficiency: Orientation Only When Needed

Because the DMC-pico is instantly available, there is no need for a power consuming standby mode. Integrators can “power on” the compass only when heading data is required, maximizing battery life and extending the operational time of the host system. This is a crucial advantage for portable and battery-powered equipment where energy efficiency directly impacts mission duration.

Resilience Against electronic warfare and GNSS Disruption

In environments affected by electronic warfare, GNSS signals may become unreliable or unavailable. The DMC-pico provides robust heading independent of GNSS, using magnetic sensors that are unaffected by jamming or spoofing. This ensures reliable heading even in denied or contested electromagnetic environments.

The Benefits of Adding a DMC-pico to Existing North Finding Systems

Even when a system is already equipped with advanced north finding technologies, the DMC pico serves as a valuable backup-solution. It quickly bridges operational “north finding gaps” and minimizes orientation delays during system start-up or alignment phases of a non-magnetic north finding system. With a weight of only 9 grams and a compact form factor, integration into existing systems is straightforward and has minimal impact on payload and power consumption.

Application Example:

Fast Orientation for UGVs in Combat Zone

Consider a scenario in which a drone deploys an unmanned ground vehicle (UGV) to a contested forest clearing in a GNSS-denied environment. In this setting, the UGV cannot afford to wait several minutes for a north finding system to complete initialization. With the DMC-pico, the compass powers on as soon as the UGV lands and it delivers heading data within milliseconds.
This enables immediate maneuvering toward cover, improving the chances of mission success. Rapid orientation is not only advantageous for UGVs, it is equally important also for handheld devices, robotic platforms, and manned/unmanned teams operating in time-critical conditions.

Conclusion

When designing a military north finding solution, it is worth considering how a small, 9 g ultra-fast digital magnetic compass can significantly improve platform readiness and mission success.
The DMC-pico combines rapid start-up, high power efficiency, and resilience in electronically contested environments, making it an ideal complementary sensor for modern electro-optical systems.