Syed D Irfan

US Patent:

20170322303, Nov 9, 2017

Filed:

Aug 1, 2014

Appl. No.:

14/909132

Inventors:

- Boulder CO, US
Syed Mohammed Irfan Azeem - Louisville CO, US
Geoffrey Crowley - Lafayette CO, US

International Classification:

G01S 13/95
G01S 19/14
G01S 13/74
G01S 19/07
G01W 1/02
G01S 19/40

Abstract:

A method of calculating ionospheric scintillation includes calculating a motion-corrected perturbation of a GNSS radio signal received by a monitoring device deployed in an oceanic environment. The method includes calculating the σφ using the high rate phase of the GNSS signal adjusted by removing the change in distance between the monitoring device and the GNSS satellite. The calculating the σo may further include passing the adjusted high rate phase through a high pass filter to remove a drift motion of the monitoring device. The method further includes calculating the S4 through calculating a tilt angle between the antenna of the monitoring device with the GNSS satellite and adjusting the antenna gain through known gain pattern of the antenna. The wave height of the oceanic environment may be calculated by detrending the antenna height to remove low frequency motion when a high rate position of the monitoring device is calculated.