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Evaluating the Feasibility of a Radar Separation Minimum for a Long-Range SSR

  • Sakae Nagaoka (a1), Osamu Amai (a1) and Yasuo Watanabe (a1)

Extract

This paper deals with an analytical method for establishing a separation minimum for air traffic control using a monopulse SSR (Secondary Surveillance Radar), namely the Long Range SSR (LSSR), of which coverage is extended to 250 n.m. The azimuth estimation accuracy of the monopulse SSR was significantly improved compared with that of conventional SSR.

As an index of a collision risk due to azimuth errors of the LSSR, the close approach probability (CAP) associated with the probability of overlap of aircraft in azimuth is used for evaluating the safety of the surveillance system. The CAPs for both the LSSR and the conventional SSR are estimated by modelling and comparing distributions of azimuth errors. The CAP for the LSSR is significantly smaller than that for the conventional one under 5 n.m. separation minimum.

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References

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1van der Kraan, P. (1983). An Engineering View on the Relation between the Radar Separation Minimum and Certain Performance Characteristics of Digitized Radar Data. Eurocontrol Report 3E1030.
2Akaike, H. (1974). A new look at the statistical model identification. IEEE Trans. Autom. Contr. AC–19, 716723.
3Rhodes, D. R. (1959). Introduction to Monopulse. New York: McGraw-Hill.
4Ozawa, J.et al. (1979). Tracking algorithm development in the RDP system. Japan Telecommunications Review, pp. 275281.
5Reich, P. (1966). Analysis of long range air traffic systems. This Journal, 19, 88, 169, 331.
6Takano, H.et al. (1988). Monopulse SSR System. NEC Research and Development, no. 88, PP. 5764.

Evaluating the Feasibility of a Radar Separation Minimum for a Long-Range SSR

  • Sakae Nagaoka (a1), Osamu Amai (a1) and Yasuo Watanabe (a1)

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