Resilient localisation for Uncrewed Aerial Systems (UAS) is vital if they are to complete their mission.
The UAS needs an onboard sensor that provides positioning while operating in all weather conditions, and especially when satellite navigation systems are temporarily unavailable, occluded by buildings, or have been actively blocked.
Sensoriis have developed and patented Active Radar Cooperating or ARCTM, two or more radars cooperating with each other, that provide a localisation capability based upon direct radar range measurement, that is independent of satellites and resilient to jamming mechanisms.
The system is designed for high visibility between one or more compatible ARCTM radars.
Each ARCTM device is configured with a unique code that is reported over the radar carrier frequency. A primary radar will report the range, bearing and elevation to other ARCs, whilst ignoring all radar reflections from background infrastructure.
This supports ‘Default Silent’ technology as the ARCTM remains silent, non-transmitting, until interrogated by a compatible radar in a recognised encoded band, critical where electronic radio stealth is required. This is extremely useful and much needed in military uses cases.
The micro radar has no moving parts and has fully electronically controlled antennas arrays in a low Size Weight and Power package suitable for battery power. Radar is largely unaffected by poor visibility, lighting, and bad weather, unlike camera-based localisation.
Micro radar on moving vehicles or vessels can support relative positioning during the critical approach and landing phases of UAS flight. The ARC-LandingTM radar system includes a primary micro radar installed onto the UAS, which will report the range, bearing and power to other secondary ARC radars on the landing zone.
A last mile resupply air (or ground) vehicle can locate the endpoint of a mission within centimetres, without the need for satellite positioning at either end, or inter-communication, if the landing position has a Sensoriis ARCTM radar.
This proprietary and patented technology supports resilient, all-weather, multilateration positioning capability, and autonomy for the UAS during the landing phase, whether onto a fixed landing pad or onto a moving vessel.
Our radars also provide assured positioning while a drone surveys infrastructure, or enable a system operator to precisely monitor position of the UAS relative to a travel zone or flight corridor, enabling the restriction of a UAS to defined locations, even when GNSS is unavailable.