equency (SHF) and extremely high frequency (EHF). 1.5 REFERENCES [1] G. M. Dillard, "A moving-window detector for binary integration," IEEE Trans. Inform. Theory, IT-13, no. 1, pp. 2-6, January 1967. R. A. Dillard, "Vulnerability of low detectability communication to energy detection," Naval Electronic Laboratory Center, San Diego, California, January 26, 1971. [3] J. D. Edell, "Wideband noncoherent frequency-hopped waveforms and their hybrids in low-probability-of-intercept communications," Naval Research Laboratory, Washington, D.C., technical report No. 8025, November 8, 1976. Appendix 1A. Conditions for Viable Multichannel Detector Performance [4] D. G. Woodring, "Performance of optimum and suboptimum detectors for spread spectrum waveforms," Naval Research Laboratory, Washington, D.C., Technical Report No. 8432, December 1980. [5] R.A. Dillard, Detectability of spread spectrum signals," IEEE Trans. Aerospace and Electronic Systems, AES-15, no. 5, pp. 526-537, July 1979. [6] J. E. Ohlson, "Efficiency of radiometers using digital integration," Radio Science, vol. 6, no. 3, pp. 341-345, March 1971. [7] M. Skolnik, ed., Radar Handbook, New York: McGraw-Hill, 1970. [8] L. Kleinrock, "Detection of energy peak of an arbitrary signal," MIT Lincoln Laboratory, Lexington, Mass., Technical Report No. 325, August 23, 1963. [9] A. Polydoros and C.L. Weber, "Optimal detection considerations for low prob- ability of intercept," MILCOM'82 Conference Proceedings, Boston, Mass., pp. 2.1-1-2.1-5, October 17-20, 1982. [10] N.F. Krasner, "Optimal detection of digitally modulated signals," IEEE Trans. Commun., COM-30, no. 5, pp. 885-895, May 1982. [11] N. F. Krasner, "Maximum likelihood parameter estimation for LPI signals," MILCOM'82 Conference Proceedings, Boston, Mass., pp. 2.3-1-2.3-4, October 17-20, 1982. [12] A.B. Glenn, "Low probability of intercept," IEEE Commun. Mag., vol. 21, no. 4, pp. 26-33, July 1983. APPENDIX 1A. CONDITIONS FOR VIABLE MULTICHANNEL DETECTOR PERFORMANCE Assume that a K-channel detector is to be realiz