The precision of the least squares method of fitting time-distance data from an observed trajectory is considered for the case where time is assumed to be a polynomial in distance. A relation between the variances of time and distance errors, assumed in a previous work, is derived. With this relation and a model of digital chronographs, the variance of the timing error is found for selected chronograph arrange¬ments;in a favorable arrangement, this variance is only one-twelfth as large as the squared counter resolving time. A comparison of time and distance errors is made.
展开▼
