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Ais

All articles tagged with #ais

Alaskan distress call scrutiny as Zuckerberg’s yacht reportedly passes by stranded skiff
world17 days ago

Alaskan distress call scrutiny as Zuckerberg’s yacht reportedly passes by stranded skiff

AIS data and Coast Guard statements indicate Zuckerberg’s $300 million yacht Launchpad was not in distress when a stranded 21‑foot skiff off Alaska called for help. Launchpad briefly slowed to allow the Wilderness Legacy to assist and tow the skiff to Farragut Bay, while Wingman allegedly passed by without stopping. The Coast Guard said the assist was underway once the call was received, and the boat in distress was not declared, meaning no legal obligation to render aid. Critics, including Senator Whitehouse, urged monitoring of emergency channel 16. Zuckerberg’s spokesperson notes the call came on a different radio channel and that aid was already in progress. The episode recalls past concerns about Launchpad going “dark” on AIS, prompting questions about safety and accountability for elite yacht owners.

via Ars Technica|
#ais#coast-guard#maritime-law
GPS Jamming Sparks Hidden Maritime Risk in the Gulf
technology5 months ago

GPS Jamming Sparks Hidden Maritime Risk in the Gulf

GPS jamming off Iran is creating AIS position distortions near the Strait of Hormuz, making vessels appear on land or in strange clusters and raising collision risks as electronic warfare spills into Gulf waters. While Iran is suspected, there is no official confirmation; researchers use radar and satellite data to map the interference and are pursuing mitigations from anti-jamming antennas to alternative navigation methods (gyroscopes, accelerometers, star-mapping), though no solution is perfect. The episode highlights the vulnerability of open GNSS and the push toward more secure, multi-sensor positioning.

via BBC|
#ais#gnss#gps
GPS Jamming Surges in Gulf as US-Israel Strike Iran Disrupts Shipping
world5 months ago

GPS Jamming Surges in Gulf as US-Israel Strike Iran Disrupts Shipping

Windward’s analysis shows GPS and AIS interference in the Gulf has disrupted more than 1,100 ships since the Feb. 28 US-Israel strikes on Iran, with vessels appearing inland or near sensitive sites (including the Barakah Nuclear Power Plant). The disruption is largely jamming, though some spoofing is occurring, and about 21 new AIS‑jammed clusters have been identified, prompting officials to call the area “critical” as the conflict expands and navigational risks rise in the Strait of Hormuz and Gulf of Oman.

via WIRED|
#ais#gps#iran
Unveiling the Dynamic Nature of Neuronal Adaptation
neuroscience2 years ago

Unveiling the Dynamic Nature of Neuronal Adaptation

Researchers have observed nerve plasticity within the axon initial segment (AIS) in real-time, shedding light on the adaptability of axons. The study reveals that the number of sodium channels in the AIS can change rapidly, within an hour, through a process called endocytosis. This adaptability allows for fine-tuning of neural activity and is crucial for learning and memory. The research team used innovative techniques, including live imaging, to observe these changes and identify the molecular mechanisms behind them. This groundbreaking research provides unprecedented insight into the intricate processes of neuroplasticity.

via Neuroscience News|
#ais#axon#live-imaging