An Evaluation Method of an Overall Accuracy of an ARSR System by an RNAY aircraft
1977 Volume 1977 Issue 16 Pages 1-14
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1977 Volume 1977 Issue 16 Pages 1-14
This paper describes a method to evaluate an overall accuracy of radar, especially ARSR, by using an RNAV aircraft.
In performing this method, the radar positions obtained from the PPI scope are compared with the airborne data, the position data computed out by the RNAV system. As the result, it was found that the RNAV aircraft (Gulfstream-2) with the Collins' ANS-70A system was an able and available tool to evaluate the display accuracy of the PPI when the aircraft was 50 nautical mile or more away from the ARSR station. This is due to some measurement errors in data collection. The magnitude of a total measurement error was 0.69 nautical mile in a 95 percent probability. The measurement errors are shown in Figure 11 and 12 by short dotted lines out of each point which indicates the magnitude of deviation of the ground data.
The overall accuracy of HAKANE ARSR (JCAB-62) was satisfactory at those points where data were obtained, because all effective data were within 1.5 degree in azimuth, and 3.0 percent in range. And the flight technical error obtained in this analysis was 0.08 nautical mile in a 95 percent probability.
