Which transmission modes do AIS ATONs use?

Which transmission modes do AIS ATONs use?

• A. FTDMA
• B. FATDMA
• C. SART
• D. DSC

Answer: (B)

AIS Aids to Navigation (ATONs) utilize a specific transmission mode that is essential for their functionality in maritime navigation. The correct choice, which refers to FATDMA, stands for Frequency and Time Division Multiple Access. This mode is designed to enhance the efficiency of communication for numerous signals by managing both frequency and time slots. Each AIS ATON is assigned specific time slots to transmit its signals, preventing interference and allowing multiple ATON stations to operate simultaneously without signal degradation. The use of FATDMA ensures that AIS ATONs can provide real-time navigational information effectively, which is critical for safe navigation in busy waterways. This technology supports the overall system of AIS communication, enabling vessels to receive timely updates about ATON status, locations, and other essential navigational information. Understanding why FATDMA is the appropriate mode also sheds light on the other choices. FTDMA, while similar, lacks the additional frequency division that FATDMA incorporates, making it less appropriate for AIS ATONs. SART (Search and Rescue Transponder) and DSC (Digital Selective Calling) serve entirely different functions within maritime safety communication, focusing more on emergency signaling rather than ongoing navigational communications by ATONs. Thus, knowing the unique role and design of FATDMA

AIS Aids to Navigation (ATONs) utilize a specific transmission mode that is essential for their functionality in maritime navigation. The correct choice, which refers to FATDMA, stands for Frequency and Time Division Multiple Access. This mode is designed to enhance the efficiency of communication for numerous signals by managing both frequency and time slots. Each AIS ATON is assigned specific time slots to transmit its signals, preventing interference and allowing multiple ATON stations to operate simultaneously without signal degradation.

The use of FATDMA ensures that AIS ATONs can provide real-time navigational information effectively, which is critical for safe navigation in busy waterways. This technology supports the overall system of AIS communication, enabling vessels to receive timely updates about ATON status, locations, and other essential navigational information.

Understanding why FATDMA is the appropriate mode also sheds light on the other choices. FTDMA, while similar, lacks the additional frequency division that FATDMA incorporates, making it less appropriate for AIS ATONs. SART (Search and Rescue Transponder) and DSC (Digital Selective Calling) serve entirely different functions within maritime safety communication, focusing more on emergency signaling rather than ongoing navigational communications by ATONs. Thus, knowing the unique role and design of FATDMA