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.
Patent No.:
Date of Patent:
Jul. 30, 2019
Filed:
Jun. 29, 2011
Applicants:
Gregory Sechong Um, Torrance, CA (US);
Yury N. Golubev, Anaheim, CA (US);
Inventors:
Gregory Sechong Um, Torrance, CA (US);
Yury N. Golubev, Anaheim, CA (US);
Assignee:
RAYTHEON COMPANY, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 19/07 (2010.01); G01S 19/14 (2010.01); G01S 19/40 (2010.01); G01S 19/43 (2010.01);
U.S. Cl.
CPC ...
G01S 19/07 (2013.01); G01S 19/14 (2013.01); G01S 19/40 (2013.01); G01S 19/43 (2013.01);
Abstract
A method of detecting a plasma depletion in the ionosphere includes comparing the large scale ionosphere trend with a local temporal slope of vertical or slant delay. In one example, the local temporal slope of delay is calculated phase data extracted from GPS signals at a GPS receiver, and the large scale trend is determined from broadcast ionosphere grid point delay data.