John Wegrzyn

4 Questions 7 Answers 0 Followers

Questions related from John Wegrzyn

How do I implement the Sentinel-1 "Absolute DC Calculation (from Orbit and Attitude)" algorithm with Level-0 data?

Sentinel-1-Level-1-Detailed-Algorithm-Definition.pdf "Section 5.1: Absolute DC Calculation (from Orbit & Attitude)" defines a series of steps to calculate the value u0 (a spacecraft-centric...

07 July 2018 7,221 0 View

Can anyone explain the science behind the need to frequency unwrap Sentinel-1 TOPS IW azimuth data?

I have written an image formation algorithm for Sentinel-1 Level-0 IW data. To properly form the image, one *must* perform the frequency unwrapping on the azimuth data. I have found I am able to...

06 June 2018 7,082 6 View

How do I use sequential/same-swath Sentinel-1 Level-0 burst data to improve azimuth resolution?

I have written a Sentinel-1 Level-0 IW mode image formation tool that is able to process each burst in an IW Level-0 file into a complex image chip. I am experimenting with different ways to use...

06 June 2018 3,944 0 View

Can someone explain the Sentinel-1 orientation (quanternion vs pitch,roll,yaw) numbers to me?

The following data comes directly from...

06 June 2018 868 3 View