Control of hovering manoeuvres in unmanned helicopter for enhanced situational awarenessAstrov, Igor; Pedai, AndrusProceedings of the 2009 IEEE International Conference on Mechatronics and Automation : August 9-12, Changchun, China2009 / p. 143-146 : ill https://ieeexplore.ieee.org/document/5156580 Enhancing situational awareness through multirate control of an autonomous underwater vehicleAstrov, Igor; Pedai, Andrus; RĂ¼stern, EnnuProceedings of the 2009 IEEE International Conference on Mechatronics and Automation : August 9-12, Changchun, China2009 / p. 1184-1189 : ill https://ieeexplore.ieee.org/document/5246459?reload=true&arnumber=5246459