The AIS-117I Advanced Imaging Sensor (Inverse Synthetic Apature) is an ISA system that is capable of long-range detection of relatively stationary targets in high-noise environments. The ISA component is an active sensor system that creates virtual swaths based on the pitch or yaw of te target. Since the size of the aperture is dictated by the motion of the target, ISA sensor detection capability is not limited by range.

It is used on various Systems Commonwealth ships, such as the Glorious Heritage Class vessel Andromeda Ascendant.