-
Patent Agency Ranking
公开(公告)号：US10530478B2
公开(公告)日：2020-01-07
申请号：US15805094
申请日：2017-11-06
Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Inventor： Ryan Wallace Kingsbury , Kathleen Michelle Riesing , Kerri Lynn Cahoy , Tam Nguyen Thuc Nguyen , David O. Caplan
IPC: H04B10/00 , H04B10/118 , H04B7/185
Abstract: Communication bottlenecks, particularly in the downlink direction, are a common problem for many CubeSat developers. As described herein, a CubeSat module for a CubeSat comprises an optical transmitter to transmit data to a remote terminal, a receiver to acquire an optical beacon from a remote terminal, and a fine-pointing module operably and directly coupleable to a coarse-pointing module of the CubeSat. The fine-pointing module is configured to point the optical transmitter toward the remote terminal with an accuracy range that overlaps with an accuracy range of the coarse-pointing module of the CubeSat so as to establish a communications link between the CubeSat and the remote terminal over a low-Earth-orbit (LEO) distance.
-
公开(公告)号：US09809328B2
公开(公告)日：2017-11-07
申请号：US14644425
申请日：2015-03-11
Applicant: Massachusetts Institute of Technology
Inventor： Tam Nguyen Thuc Nguyen , Kerri L. Cahoy , Meghan K. Quadrino
CPC classification number: B64G1/365 , B64G1/26 , B64G1/281 , B64G1/283 , B64G1/285 , B64G1/286 , B64G1/288 , B64G1/32 , B64G1/34 , B64G1/36 , B64G1/363 , B64G1/366 , B64G1/407 , B64G2001/245
Abstract: Described herein are systems and methods for attitude determination using infrared Earth horizon sensors (EHSs) with Gaussian response characteristics. Attitude information is acquired by detecting Earth's infrared electromagnetic radiation and, subsequently, determining the region obscured by Earth in the sensors' fields of view to compute a nadir vector estimation in the spacecraft's body frame. The method can be applied when two sensors, each with known and distinct pointing directions, detect the horizon, which is defined as having their fields of view partially obscured by Earth. The method can be implemented compactly to provide high-accuracy attitude within small spacecraft, such as CubeSat-based satellites.
-
公开(公告)号：US10220965B2
公开(公告)日：2019-03-05
申请号：US15725478
申请日：2017-10-05
Applicant: Massachusetts Institute of Technology
Inventor： Tam Nguyen Thuc Nguyen , Kerri L. Cahoy , Meghan K. Quadrino
Abstract: Described herein are systems and methods for attitude determination using infrared Earth horizon sensors (EHSs) with Gaussian response characteristics. Attitude information is acquired by detecting Earth's infrared electromagnetic radiation and, subsequently, determining the region obscured by Earth in the sensors' fields of view to compute a nadir vector estimation in the spacecraft's body frame. The method can be applied when two sensors, each with known and distinct pointing directions, detect the horizon, which is defined as having their fields of view partially obscured by Earth. The method can be implemented compactly to provide high-accuracy attitude within small spacecraft, such as CubeSat-based satellites.
-
公开(公告)号：US20180111706A1
公开(公告)日：2018-04-26
申请号：US15725478
申请日：2017-10-05
Applicant: Massachusetts Institute of Technology
Inventor： Tam Nguyen Thuc Nguyen , Kerri L. Cahoy , Meghan K. Quadrino
CPC classification number: B64G1/365 , B64G1/26 , B64G1/281 , B64G1/283 , B64G1/285 , B64G1/286 , B64G1/288 , B64G1/32 , B64G1/34 , B64G1/36 , B64G1/363 , B64G1/366 , B64G1/407 , B64G2001/245
Abstract: Described herein are systems and methods for attitude determination using infrared Earth horizon sensors (EHSs) with Gaussian response characteristics. Attitude information is acquired by detecting Earth's infrared electromagnetic radiation and, subsequently, determining the region obscured by Earth in the sensors' fields of view to compute a nadir vector estimation in the spacecraft's body frame. The method can be applied when two sensors, each with known and distinct pointing directions, detect the horizon, which is defined as having their fields of view partially obscured by Earth. The method can be implemented compactly to provide high-accuracy attitude within small spacecraft, such as CubeSat-based satellites.
-
公开(公告)号：US10917173B2
公开(公告)日：2021-02-09
申请号：US16579914
申请日：2019-09-24
Applicant: Massachusetts Institute of Technology
Inventor： Ryan Wallace Kingsbury , Kathleen Michelle Riesing , Kerri Cahoy , Tam Nguyen Thuc Nguyen , David O. Caplan
IPC: H04B10/00 , H04B10/118 , H04B7/185
Abstract: Communication bottlenecks, particularly in the downlink direction, are a common problem for many CubeSat developers. As described herein, a CubeSat module for a CubeSat comprises an optical transmitter to transmit data to a remote terminal, a receiver to acquire an optical beacon from a remote terminal, and a fine-pointing module operably and directly coupleable to a coarse-pointing module of the CubeSat. The fine-pointing module is configured to point the optical transmitter toward the remote terminal with an accuracy range that overlaps with an accuracy range of the coarse-pointing module of the CubeSat so as to establish a communications link between the CubeSat and the remote terminal over a low-Earth-orbit (LEO) distance.
-
-
-
-
Search Results
5
records
(took 0.014 seconds)
