Hypersonic, page-50

https://www.aerotechnews.com/blog/2021/09/03/hypersonics-developing-and-defending-against-missiles-far-faster-than-sound/

Hypersonics: developing and defending against missiles far faster than sound

The speed and range of hypersonic weapons has taken the task of defending against them into space, where orbiting sensors can detect a launch the moment it happens — or even before. “Every minute counts when it comes to hypersonics,” said Rob Aalseth, mission area director for Missile Warning and Defense at Raytheon Intelligence & Space, a Raytheon Technologies business. His team is developing a broad set of space technologies to detect, track and intercept hypersonic weapons at all phases of flight.

“Latency is the key parameter to address when defeating hypersonic threats. It affects every other parameter,” Aalseth said.On that front, Raytheon Intelligence & Space uses advanced missile detection and tracking algorithms that can perform highly precise missile track processing onboard the satellite in orbit.“All of the other systems to date have had to send the data to the ground for processing,” Aalseth said. “That wastes time.”


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https://patentscope.wipo.int/search/en/detail.jsf?docId=US330048233&tab=NATIONALBIBLIO

US11063667 - Systems, devices, and methods for optical communication

Applicants Raytheon BBN Technologies, Corp.

A technology is described for optical communication. An example of the technology can include receiving an event stream containing indications of independent events detected by pixels in an event camera. An event may be a change in brightness detected by a pixel in the pixel array, and the pixel independently generates an indication of the event in response to detecting the event. The event stream can be demultiplexed into a plurality of commun ication streams containing related events associated with a plurality of communication sources. The events contained in a communication stream can be aggregated based in part on an event proximity and an event time that associates an event with other events contained in the event stream. The plurality of communication streams can be demodulated to extract optically transmitted information from the plurality of communication streams, which can be sent to a data Consumer





Theo ptically-modulated signals cause asynchronous pixel activations to occur and an associated change of brightness to be detected, each of which is encapsulated as an event by associated readout electronics and tagged with a corresponding pixel location and timestamp (e.g., E(x,y,t)). One or more event streams are sent to the event processors (e.g., event processor(s) 104 such as shown in FIG. 1),