【单选题】You have another ship overtaking you close aboard to starboard. You have 3 radar targets bearing 090° relative at ranges of 0.5 mile, 1 mile, and 1 .5 miles. In this case, the unwanted echoes are call...
【单选题】You have another ship overtaking you close aboard to starboard. You have 3 radar targets bearing 0900, 0. 5 mile, 1 mile, and 1. 5 miles. In this case, the unwanted echoes are called________.