Indian Ocean Validation

Abstract : Results from the Indian Ocean validation conducted during 1983 are presented. Existing coverage theories were largely confirmed in the region except that an interference boundary for the use of Japan at night in Western Australia should be relocated. The supported coverage theories indicate potential accuracy of 2 nmi (c.e.p) or better throughout the region on a 24-hour basis except in the important trade route from the Red Sea, around the tip of India, through the Straits of Malacca, and into the South China Sea. On the trade routes accuracies as poor as five miles may occasionally occur.