| 摘要 |
PROBLEM TO BE SOLVED: To provide an ocean target that the infrared sensor of a flying body is easy to detect, and is a suitable target even in conditions other than fine weather, with a more inexpensive structure than conventional ones.SOLUTION: A heat transfer cardboard sheet has: protective heat transfer layers 17 on both surfaces of front and rear sides, the protective heat transfer layer comprising an aluminum sheet 15 where a resin coating layer 16 is laminated on a surface on a side to be a front surface; and a cardboard layer 11 between the protective heat transfer layers 17. In a lamination sheet 10 for an ocean target, on a surface to be the front side of a heat transfer cardboard sheet, a planar heating element 21 is laminated. |
