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Help / tips appreciated in the field use of an Proton 3 (JW Fisher) magnetometer. I have been ask to go along on a shipwreck hunt. I am well versed in all types of GPS equipment having sold GPS equipment to the Surveying and Mapping market for many years. I also have a long surveying backgound that provides me with the skills to perform navigation and to grid out search areas - navigate back to promising anomolies etc.
Aside from exeprience with the common Schoenstedt metal detector used by Land Surveyors to find property pins I have no experience with metal detection.
In general, my plan is to setup a grid search for the historically researched area; sweep the area whilst logging DGPS corrected positions (sub meter) with correlated magnetometer data - subject the data logs to daily post mission analysis - then have an anomoly inspection team navigate back to the "suspects" to find / characterize them. The inspection team would use a Pulse 8x (also by JW fisher).
What I don't have any understanding of is the in the field use of the Proton 3 - for example - how far away does the thing have to be from the boat - how far away will it detect a what size piece of iron - how far does it need to run off the bottom - would it be helpful to setup a seperate static magnetometer to perform post mission differential magnotometry on the data to eliminate false positive anomolies. And so on.
Any tips / reading resources - web sites appreciated.
I'm pretty confident I'll wade through all the technical aspects of getting everything talking together - tuning the magnetometer (or getting it tuned) for the area etc. That being said, any and all tips are appreciated.
ThanX, Wes
WesGPS.com
Aside from exeprience with the common Schoenstedt metal detector used by Land Surveyors to find property pins I have no experience with metal detection.
In general, my plan is to setup a grid search for the historically researched area; sweep the area whilst logging DGPS corrected positions (sub meter) with correlated magnetometer data - subject the data logs to daily post mission analysis - then have an anomoly inspection team navigate back to the "suspects" to find / characterize them. The inspection team would use a Pulse 8x (also by JW fisher).
What I don't have any understanding of is the in the field use of the Proton 3 - for example - how far away does the thing have to be from the boat - how far away will it detect a what size piece of iron - how far does it need to run off the bottom - would it be helpful to setup a seperate static magnetometer to perform post mission differential magnotometry on the data to eliminate false positive anomolies. And so on.
Any tips / reading resources - web sites appreciated.
I'm pretty confident I'll wade through all the technical aspects of getting everything talking together - tuning the magnetometer (or getting it tuned) for the area etc. That being said, any and all tips are appreciated.
ThanX, Wes
WesGPS.com