Method for initializing a sensor array comprising at least four sensors, the sensors being mechanically joined together and being configured to measure the same physical quantity along at least two non-collinear measurement axes, this method comprising: - acquiring first measurements of the physical quantity, these first measurements being measured by the sensors and preceding second measurements, the first measurements of a sensor along each of its measurement axes forming a first measurement vector, - executing (46, 48, 50) a statistical test on a set consisting of the first measurements measured by the sensors, this statistical test being able to detect at least one aberrant measurement in the first measurements caused by a presence of an object, called a disruptor, this disruptor modifying the measured physical quantity nonuniformly, - if the execution of the statistical test detects at least one aberrant measurement, then the method comprises signaling the presence of the disruptor, and - if the execution of the statistical test does not detect at least one aberrant measurement, then the method comprises acquiring second measurements of the physical quantity, these second measurements being measured by the sensors, characterized in that the execution of the statistical test comprises: - for each measurement axis, computing a reference value for the first measurements of the sensors, the reference values computed for each measurement axis forming a reference vector, - for each sensor, computing a distance representative of the discrepancy between the first measurement vector of this sensor and the computed reference vector, this distance depending on: • the discrepancy between the norms of the first measurement vector and of the reference vector, and • the angular discrepancy between the first measurement vector and the reference vector, - verifying that the computed distances meet a preset condition and detecting the presence of at least one aberrant measurement if the computed distances meet this preset condition and, conversely, when the computed distances do not meet this preset condition, not detecting at least one aberrant measurement. - acquiring first measurements of the physical quantity, these first measurements being measured by the sensors and preceding second measurements, the first measurements of a sensor along each of its measurement axes forming a first measurement vector, - executing (46, 48, 50) a statistical test on a set consisting of the first measurements measured by the sensors, this statistical test being able to detect at least one aberrant measurement in the first measurements caused by a presence of an object, called a disruptor, this disruptor modifying the measured physical quantity nonuniformly, - if the execution of the statistical test detects at least one aberrant measurement, then the method comprises signaling the presence of the disruptor, and - if the execution of the statistical test does not detect at least one aberrant measurement, then the method comprises acquiring second measurements of the physical quantity, these second measurements being measured by the sensors, - for each measurement axis, computing a reference value for the first measurements of the sensors, the reference values computed for each measurement axis forming a reference vector, - for each sensor, computing a distance representative of the discrepancy between the first measurement vector of this sensor and the computed reference vector, this distance depending on: • the discrepancy between the norms of the first measurement vector and of the reference vector, and • the angular discrepancy between the first measurement vector and the reference vector, • the discrepancy between the norms of the first measurement vector and of the reference vector, and • the angular discrepancy between the first measurement vector and the reference vector, - verifying that the computed distances meet a preset condition and detecting the presence of at least one aberrant measurement if the computed distances meet this preset condition and, conversely, when the computed distances do not meet this preset condition, not detecting at least one aberrant measurement.