A. Passive Sensors (915 papers)

A.1 Visible Cameras (5 papers)

A.2 IR Cameras (910  papers)

Single-Frame Detection (291  papers), Sequential Frames Detection Methods/Multi-Frame Detection Methods (11 papers)

Air-Surface (3 papers), Sea-Surface (36 papers)

B. Active Sensors (145 papers)

B.1. SAR Imaging (144 papers)

Ship Detection (56 papers)

B.2. Sonar Imaging (1 paper)