“The range of the sensor is a closely guarded secret by the EuroFirst consortium but confirmed to be more than 74 km.[11] The RAND Corporation reports ranges of 50 nm (93 km) to a subsonic target from the front and up to 90 nm (167 km) from the rear of a subsonic target.[12] However, the weather conditions will affect the performance of the infrared-based target search and target tracking significantly.[13] In 2013, the detection range of PIRATE was said to be further increased by software updates.[14]”
摘錄自： https://en.m.wikipedia.org/wiki/EuroFIRST_PIRATE
