AIM+ GNSS Technology
The Core Intelligence Behind Resilient GNSS
AIM+ (Advanced Interference Mitigation and Monitoring) is Septentrio’s built-in system that combines hardware and software methods to detect, analyse and mitigate GNSS jamming and spoofing — the goal is continuous, truthful positioning and timing even in hostile radio environments.
To achieve this, multi-frequency, multi-constellation tracking plus a layered set of detection and mitigation tools (spectrum monitoring, anomaly detection, crypto-based authentication where possible) are applied that address both accidental/unintentional RF interference (e.g., nearby radios) and deliberate attacks (jammers, spoofers).
The Big Picture: Why Resilience Matters
Modern GNSS signals arrive at Earth extremely weak — tiny whispers among a loud radio crowd — so when other transmitters push energy into nearby frequencies, or when malicious actors try to feed a receiver false signals, the result is the same: position or time you can’t trust. AIM+ is Septentrio’s strategy for keeping GNSS useful and truthful in those environments. It’s not a single gadget — it’s an approach built into the receiver core that continuously watches the RF input, analyses anomalies, and uses a combination of signal-level techniques to preserve correct positioning or loudly flag when it cannot.
GNSS signals operate in a contested electromagnetic environment
© Septentrio
Think of AIM+ as two simultaneous jobs the receiver must do: first, clear the channel — remove or suppress interfering signals that would drown satellites; second, verify the message — check whether the signals that remain are authentic or a convincing fake. Those two jobs are distinct but tightly coupled: successful spoofing often begins with jamming to break the receiver’s lock, so strong anti-jamming is the first line of defence for authentic positioning. AIM+ implements both lines of defense at the RF and signal-processing core, then produces clear, reliable status flags so the rest of the system can act.
Monitoring a truthful spoofing flag for reliable operation
© Septentrio
AIM+ for Africa
Imagine a surveying crew near a busy telecom tower getting erroneous RTK fixes because the tower spills into L2 — or a wildlife-monitoring drone losing its RTK fix because a local action camera or self-installed jammer knocks L1 down. AIM+ helps keep those operations running, or at least notifies operators when positioning is no longer trustworthy so safety logic (return-to-home, stop-work, or inertial fallback) can engage. The technology is built to support multi-band, multi-constellation receivers so when one band is impaired, solutions can gracefully fall back to other signals instead of silently failing.
This matters in Africa where GNSS is not a luxury but a backbone: tractors steering straight irrigation lines, survey teams pegging mine expansion, shipping lanes requiring dependable timing. Lost GNSS here doesn’t just inconvenience — it disrupts logistics, increases safety risk and costs money. A receiver without AIM+ may see perfect signal strength while being fed a perfectly wrong position. A receiver with AIM+ understands context, cross-checks signals, filters interference and surfaces trust indicators so automation knows when to proceed and when to stop.