Title:
航空機の高度センサを較正する方法
Document Type and Number:
Japanese Patent JP3682980
Kind Code:
B2
Abstract:
A method for calibrating a pressure-sensing altitude sensor of an aircraft while the aircraft is in flight. The method includes the steps of obtaining a set of reference atmospheric pressures as a function of height above a base station by affixing a reference pressure sensor to a balloon. As the balloon is released into the atmosphere, the reference sensor continuously measures the atmospheric pressures and transmits the data back to the base station while a ground-based radar disposed adjacent the base station measures the height of the balloon. An aircraft flying in a vicinity of the base station can calibrate its pressure-sensing altitude sensors by measuring the atmospheric pressure outside the aircraft and its geometric height relative to the base station and then comparing the pressure measurements with corresponding reference pressure values at a geometric height that is substantially that same as the geometric height of the aircraft.
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Inventors:
Hedrick, Geoffrey, S., M.
Application Number:
JP54604998A
Publication Date:
August 17, 2005
Filing Date:
March 27, 1998
Export Citation:
Assignee:
Hedrick, Geoffrey, S., M.
International Classes:
G01C25/00; G01C5/00; G01C5/06; G01S5/02; G01S19/14; G08G5/04; G01S5/14; G01S19/42; (IPC1-7): G01C25/00; G01C5/06
Domestic Patent References:
| JP6213669A | ||||
| JP50155275A | ||||
| JP61000013U |
Attorney, Agent or Firm:
Shintaro Nogawa