The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 31, 2024

Filed:

May. 03, 2022
Applicant:

Massachusetts Institute of Technology, Cambridge, MA (US);

Inventors:

Kerri Cahoy, Concord, MA (US);

Christian Haughwout, Clinton, CT (US);

Paul Serra, Boston, MA (US);

Ruonan Han, Cambridge, MA (US);

Anantha Chandrakasan, Natick, MA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64G 3/00 (2006.01); B64G 1/10 (2006.01); B64G 1/44 (2006.01); G01S 1/70 (2006.01); G01S 5/16 (2006.01); G01S 17/74 (2006.01);
U.S. Cl.
CPC ...
B64G 3/00 (2013.01); B64G 1/1085 (2013.01); G01S 1/70 (2013.01); G01S 5/16 (2013.01); B64G 1/44 (2013.01); G01S 17/74 (2013.01);
Abstract

Femto-satellites are very small satellites that can be deployed in constellations from a larger mothership satellite for distributed measurement. They are too small to accommodate the GNSS receivers that many satellites use for navigation, but they can be located with an electromagnetic beam from the mothership satellite. The mothership satellite scans this beam across a constellation of femto-satellites. When the beam scans across a particular femto-satellite, the femto-satellite transmits an acknowledgement to the mothership satellite, e.g., by retroreflecting the beam or via a separate radio link. The beam can be modulated with commands for the femto-satellite, such as to make a measurement or transmit previously acquired data, as well with commands for determining the femto-satellite's location, such as a time stamp or beam pointing information. The femto-satellite can determine its location from the information modulated onto the beam or transmit the time stamp to the mothership satellite for localization.


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