Constructive errors of three-coordinate electric field strength sensor
In the given article the question of increase of accuracy of transformation of a three-coordinate sensor of intensity of electric field due to their constructive execution is considered. Previously, this issue was not addressed. There are analyzed instrumental (constructive) errors characteristic for three-coordinate sensors. The error of the resultant sensitivity of the three-coordinate sensor, the parallel error of the pairs of sensing elements and the error caused by the non-orthogonality of the coordinate axes of the sensor are subjected to analysis. It is shown that the error of the resultant sensitivity can be reduced to the desired minimum due to coordinate-wise calibration of the sensor, the parallelism error of the pairs of sensing elements is directly proportional to the square of the deflection angle and for a deviation of Δ = 4° it is only 0,25% and in most cases it can be neglected. The error in the orthogonality of the coordinate axes can be significant and can reach percentages (1,75% / deg). This error can only be reduced by strict observance of the orthogonality of the coordinate axes of the sensor.