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:
Mar. 03, 1998
Filed:
Jul. 31, 1995
Richard C Savage, Franktown, CO (US);
James L Peirce, Hermosa Beach, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
An apparatus for measuring the properties of the tropopause includes a variable frequency microwave radiometer operating over a range of from about 118.0 to about 119.0 GHz. The radiometer receives as an input a frequency selector signal and produces as an output a measured power level at a measurement frequency corresponding to the input frequency selector signal. The apparatus further includes a feedback controller having as an input the measured power level and producing as an output the frequency selector signal. The feedback controller varies the frequency selector signal to a target frequency so as to produce a minimum value in the measured power level. The tropopause equivalent altitude is determined from the target frequency.