Jim Bryan, director of Boeing Cruise Missile Systems, spoke to USNI News and said that the aerospace company had tested electro-optical and infrared sensors on its Harpoon anti-ship missile.
Official U.S. Navy Page from United States of AmericaMC2 Kaleb R. Staples/U.S. Navy [Public domain], via Wikimedia Commons
He added that those sensors are better in bad weather and difficult lighting conditions on the water.