Other than using a screen utility like Grab, or Camtasia, or shooting the GPS screen, I'm not sure how else you can do this. Using software and a Parhelia card, I was able to do this for a short clip on a desktop system, using the Parhelia's composite output, which looks better than most cheap scan converters.
1. Set your camera timecode as exactly as you can.
2. Connect the GPS to your laptop and upload the track info.
3. Each track point should have date and time associated with it. Use this to sync the data to the timeline.
4. Use the subtitler plugin recently discussed in another thread to take the text from the GPS track log and actually display it on screen.
You can use a small microcontroller like the BASIC Stamp (www.parallax.com) to take the GPS data stream and then send it to a video overlay device (I think there is a small one called the BOB2) that you can feed into your camera -- though I don't think you can record from the analog inputs on the VX-1000, so you may have to use a different (and smaller) camera.
I do know people who do this very thing, used to measure clearances of raliway line points, space between trees and power lines and also for loggin types and numbers of trees growing on riverbanks.
GPS receiver outputs data as fsk in the audio spectrum, so GPS data goes into one channel on DSR-11, video goes in the usually hole, other audio channel can be used to record commentary.
BTW the GPS system they use is very expensive and camera is on gyro mounts, I think gryro data also is recorded so the system can tell you the GPS of what is in the shot, not just where the chopper is.
Final output correlates chopper image with satellite imaging, very clever system.
One or two hidef cameras (big $) models have GPS location and time data recorded.
The FSK data modulation via audio channel seems the best el-cheapo way to record AND keep the full frame for yourself. This needs a decoding application or playing back to the GPS device, I suppose.
Thanks for the replies. I think I've found a unit from Horita that puts the gps info on the audio track . Waiting to hear back from them. Thanks again. John.
If you want very accurate GPS data from a moving platform the recievers are quite expensive. The guys I was talking about told me their receiver was around $100K. They have six aerials mounted on the copter.