Reduction of the Uncertainty of Radar Range Correction.
- 1 June 1977
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
A correction for the range error induced by the ionosphere is examined for a representative 425 Mhz radar. A technique has been developed to update the basic prediction of the median so that the residual day-to-day variability of the range correction is reduced. This technique is examined over a descending phase of a solar cycle using measurements of total electron content from Hamilton, Massachusetts. The results show that hourly updating can reduce the residual error in range correction by 60 percent, and three-hourly updating will provide a 30 percent reduction in day-time when the absolute error in range correction is greatest. During periods of rapid changes in TEC such as, sunrise and sunset, and periods of sever magnetic disturbance updating in 15-30 minute intervals is recommended to significantly reduce error. (Author)Keywords
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