DeSousa Labs — Engineering Notes & SignalsIndependent engineering lab exploring autonomy, navigation, embedded systems, simulation, and verification.https://desousalabs.ca/en-usUnderstanding DVL Velocity Measurementshttps://desousalabs.ca/notes/understanding-dvl-velocity-measurements/https://desousalabs.ca/notes/understanding-dvl-velocity-measurements/A practical introduction to Doppler Velocity Log measurements used in underwater navigation.Fri, 21 Aug 2026 00:00:00 GMTNavigationAUVSensorsAdvances in Underwater Navigation Without GNSShttps://desousalabs.ca/signals/advances-in-underwater-navigation-without-gnss/https://desousalabs.ca/signals/advances-in-underwater-navigation-without-gnss/A research consortium has published results on a terrain-relative navigation method that reduces long-duration drift for AUVs operating without GNSS fixes.Wed, 19 Aug 2026 00:00:00 GMTMarine AutonomyNavigationNew Approaches to High-Fidelity AUV Simulationhttps://desousalabs.ca/signals/new-approaches-to-high-fidelity-auv-simulation/https://desousalabs.ca/signals/new-approaches-to-high-fidelity-auv-simulation/A new open-source simulation framework claims closer-to-real acoustic sensor modelling for underwater vehicles, including simulated multipath and reverberation effects.Sat, 15 Aug 2026 00:00:00 GMTSimulationMarine AutonomyError-State Kalman Filters for Navigationhttps://desousalabs.ca/notes/error-state-kalman-filters-for-navigation/https://desousalabs.ca/notes/error-state-kalman-filters-for-navigation/Why error-state formulations are a common choice for embedded inertial navigation.Fri, 14 Aug 2026 00:00:00 GMTNavigationSensor FusionEmbeddedEmbedded Sensor Fusion Moves Toward Edge Processinghttps://desousalabs.ca/signals/embedded-sensor-fusion-moves-toward-edge-processing/https://desousalabs.ca/signals/embedded-sensor-fusion-moves-toward-edge-processing/A newly announced low-power microcontroller line integrates a hardware-accelerated Kalman filter block aimed at IMU and GNSS sensor fusion on embedded navigation boards.Mon, 10 Aug 2026 00:00:00 GMTEmbeddedSensor FusionSimulation-First Development for AUVshttps://desousalabs.ca/notes/simulation-first-development-for-auvs/https://desousalabs.ca/notes/simulation-first-development-for-auvs/Notes on why simulation fidelity, not just simulation existence, determines its usefulness for underwater vehicle development.Fri, 07 Aug 2026 00:00:00 GMTSimulationAUVEngineering Practice