| 摘要 |
PURPOSE:To discriminate on measurement position precision instuitionally by differentiating two measurement position lines twice by time and finding their variances respectively, and displaying measurement position precision parameters based on the amounts of position line shifts correlative to the extents of the variations. CONSTITUTION:A position line LOP1 is differentiated by time through the differentiating circuit 1 consisting of a delay circuit 10 and a subtracting circuit 11 and further differentiated again by a differentiating circuit 2. At its output, the variance of th LOP1 appears and is averaged by an averaging circuit 4 after being passed through an absolute value circuit 3 to obtain the amount V1 of the position shift, which is converted by a coordinate converting circuit 5 into an altitude and a latitude value to provide intuition. Similarly, an LOP2 is also processed to display the result on a display 7. |
