There is some sort of issue with the lower ranges. It requires the pulse length be close to the lowest range gate. It distorts the higher lags and causing a fitting issues, causing a reduction in the electron density and causes reductions in Te/Ti. The images below are from a 24 sample length pulse 480 mu s and a range swath that goes from 50-550 km. Pulse width is ~72 km. With the same wave form if the range swath starts at higher than 100 km then it goes away.
The affect is present after the initial estimate of the lags before any thing is applied.
Possible fixes:
- Make the range multiplication be lag dependent.
- Already extended range gates that are less than zero to be the range of the first value? Is there a weird inflection point when the real range stuff starts?
There is some sort of issue with the lower ranges. It requires the pulse length be close to the lowest range gate. It distorts the higher lags and causing a fitting issues, causing a reduction in the electron density and causes reductions in Te/Ti. The images below are from a 24 sample length pulse 480 mu s and a range swath that goes from 50-550 km. Pulse width is ~72 km. With the same wave form if the range swath starts at higher than 100 km then it goes away.
The affect is present after the initial estimate of the lags before any thing is applied.
Possible fixes: