| 摘要 |
<p>PROBLEM TO BE SOLVED: To present such data as predicting collision between ships to crews for avoiding collision to secure ship's safety, by providing a calculation device which calculates, using position data of radar target, target's course and speed. SOLUTION: A radar 1 outputs other ship's position data around a ship, and a radar signal conversion device 2 converts the analogue signal of radar target's position data from the radar 1 to digital signal. A radar target course/ speed calculation device 3 calculates the course and speed of radar target using the position data outputted from the radar signal conversion device 2, and a course/speed detection device 4 detects the course and speed of its own ship. A radar target display device 5 displays target's course and speed calculated with the radar target course/speed calculation device 3 and its own course and speed detected with the course/speed calculation device 4 in numeric value and line segment.</p> |
