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IE = B - A = C - 2ACompare B to A to find Index Error. IE = B - A = C - 2A A(IE)A(IE) Range (A) between own ship and other incorporates Index Error. 1 Error characteristics. Despite of the good performance of cloud radars the accuracy of reflectivity measurements may be crucial. 1. Index error: This is the difference between the actual range between two points on a map and the range detected by the radar. This error can be observed The sextant has an index error if the index mirror and horizon mirror are not parallel when the index arm (alidade) and the drum with minute scale are set Provided is a method for estimating radar system error. The method comprises: (1) dividing grids; (2) dividing node data sets; (3) receiving target data; What are errors of/in Radar ? · Heading marker alignment. · EBL not alignment. · Gyro input with error. · Improper tuning. · Improper range. · Blind sector. Obvious erroneous measurements are excluded from the calculation because the systematic error of the radar unit is to be calculated. This does not mean, however General Info: 2 main frequencies of Radar, 3 GHz (S Band), 9GHz (X Band) Index Error: The difference between the true range between points on a chart and