What is a common effect of GNSS interference on a UAV flight, and which mitigation can help?

What is a common effect of GNSS interference on a UAV flight, and which mitigation can help?

• A. It degrades video quality and requires lowering altitude.
• B. It degrades positioning accuracy; mitigations include RTK/PPK, multi-constellation receivers, field recalibration, and verification of fixes.
• C. It has no impact on flight; mitigations are unnecessary
• D. It only affects radio telemetry; mitigations involve changing channel.

Answer: (B)

GNSS interference mainly harms the drone’s ability to determine its precise position, so navigation, hold, and waypoint accuracy can become unreliable. The strongest way to counter this is to rely on higher-integrity positioning solutions and broader satellite access. RTK or PPK provides precise corrections that greatly reduce positioning error, even in adverse conditions. Using a multi-constellation receiver (accessing GPS, GLONASS, Galileo, BeiDou, etc.) increases satellite visibility and resilience, so the system can maintain a reliable fix if one system is degraded. Field recalibration and verification of fixes help ensure the GNSS solution you’re trusting is valid before and during flight. Together, these mitigations address the root issue—loss of accurate positioning—more effectively than other options.

GNSS interference mainly harms the drone’s ability to determine its precise position, so navigation, hold, and waypoint accuracy can become unreliable. The strongest way to counter this is to rely on higher-integrity positioning solutions and broader satellite access. RTK or PPK provides precise corrections that greatly reduce positioning error, even in adverse conditions. Using a multi-constellation receiver (accessing GPS, GLONASS, Galileo, BeiDou, etc.) increases satellite visibility and resilience, so the system can maintain a reliable fix if one system is degraded. Field recalibration and verification of fixes help ensure the GNSS solution you’re trusting is valid before and during flight. Together, these mitigations address the root issue—loss of accurate positioning—more effectively than other options.