![]() ![]() When the rising edge of the echo signal is distorted by noise. The theoretical maximum accuracy with which a distance can be measured depends on the accuracy of the runtime measurement. Interval required, taking into account siting and exposure.įigure 1: Falsification of the pulse edge due to superimposition of noise Accuracy in range determination The variable to be measured/observed over the representative time, area and/or volume The true value is that value which, under operational conditions, characterizes perfectly In the reported values will have a mean value (or bias) close to zero.Īny residual bias should be small compared with the stated accuracy requirement. The assumption that all known correction is taken into account implies that the errors To 2 standard deviations of the mean for a normal (Gaussian) distribution of the variable. ![]() The recommended probability level is 95 percent, which corresponds ![]() Respect to the true value and indicates the interval in which the true value lies with a stated The stated value of required accuracy represents the uncertainty of the reported value with To another (by neglecting all possible errors). Relative: The accuracy which a user can determine one position relative.Repeatable: The accuracy in which a user can return to a position whoseĬoordinates have been measured at a previous time with the same navigation system.Predictable: The accuracy of a position in relation to the geographic.Radio navigation performance accuracy is usually presented as a statistical measure of system error The velocity of a platform at a given time and its true position or velocity. Accuracy is the degree of conformance between the estimated or measured position and/or ![]()
0 Comments
Leave a Reply. |