Equipment designed to capture Automatic Identification System (AIS) signals from both AIS channels simultaneously, typically referred to as devices allowing reception from two separate AIS frequencies, are commercially available. These units enable the monitoring of vessel traffic data transmitted by AIS transponders.
The capacity to receive from both AIS channels offers enhanced data acquisition and situational awareness compared to single-channel receivers. Historically, limitations in receiver technology necessitated single-channel operation, but advancements have led to more comprehensive and efficient dual-channel capabilities, providing a more complete picture of surrounding maritime activity and potentially improving navigational safety.
