Abstract
A Radar Aspector which is a equipment to instantly identify aspect angle of another ship concerned was reported before. It could be greatly advantageous for navigators to avoid collision. In this paper, the new type of the Radar Aspector is described. This equipment can provide of manoeuvring information such as course, speed and another information. The equipment utilizes interval time of digitally encoded pulse of radar. For example, each group of intervals corresponds to specific meanings such as ship's course, speed and so on as the following table. [Table] If a ship receives following sequence of pulse interval from another ship's radar, 1, 001μs, 1, 010μs, 1, 023μs, 1, 006μs and 1, 034μs, these are decoded as course 103゜and speed of 24K't. The theory, the fabrication and the results of experiment are reported in this paper.
