Sightseer
Posts: 2
Please explain what CTS is in the extracted data

Hi,

 

I've just started using a Hero 9 Black and Telemetry Extractor Premium to review the data. I had assumed that "cts" stood for "camera time code", but if so, it doesn't agree with the number of seconds from the GPS data. For instance in a partial data set I get the folllowing when extracting GPS data at the "auto" sampling rate. I'm expecting 18 Hz.

 

Looking at the first two rows, I see .405 to .350 seconds between data points. So that's 0.055 seconds which is equal to 1/18 of a seconds and thus 18Hz. The "cts" values for those two rows differ by 1419.090778 - 1363.716222 = 55.374556. So it looks like cts is time in thousandths of a second. Is that correct?

 

ctsdateGPS (Lat.) [deg]GPS (Long.) [deg]
1363.7162222021-05-28T17:58:05.350Z47.206565-122.4332659
1419.0907782021-05-28T17:58:05.405Z47.2065648-122.4332659
1474.4653332021-05-28T17:58:05.460Z47.206565-122.4332658
1529.8398892021-05-28T17:58:05.515Z47.2065648-122.4332658

 

thanks, Craig