Method for limiting baro-inertial speed correction and associated system

A method for limiting baro-inertial vertical speed correction, the baro-inertial vertical speed being calculated by a baro-inertial loop, the baro-inertial loop being implemented by at least one processor included in an airborne system, the airborne system further comprising at least one accelerometer and at least one baro-altimeter, the baro-inertial loop taking as an input at least one vertical acceleration from at least one measurement of the accelerometer and at least one barometric altitude from at least one measurement of the baro-altimeter, the baro-inertial loop being configured to:

• provide, from the vertical acceleration, at least one baro-inertial vertical position and the baro-inertial vertical speed, and
• correct the baro-inertial vertical position and the baro-inertial vertical speed from the barometric altitude and at least one position correction gain, at least one vertical speed correction gain and at least one vertical acceleration correction gain,
• the baro-inertial vertical position undergoing a modification due to a modification in the barometric altitude, the modification in the barometric altitude being due to a modification in local pressure,
• the method being implemented by the processor implementing the baro-inertial loop and comprising at least one step of limiting correction of the baro-inertial vertical speed when the absolute value of the difference between the barometric altitude and the baro-inertial vertical position is greater than a predetermined threshold, the step of limiting correction of the baro-inertial vertical speed comprising modifying the position correction gain.