I am not sure if this service is available outside the U.S.
I haven't done this, but the collected data could be post-processed for free using the USGS OPUS website service.
The A100 can also log raw data for post-processing using the PocketMax software that is provided free by Hemisphere. It has performed well, with accuracy in about the 2 meter range or better without any post-processing when we elevate it on a 20-foot tall survey rod. However, mostly we use it in the woods under difficult canopy conditions. It consistently provides submeter observations in the clear using WAAS corrections. I have been using a Hemisphere A100 smart antenna and logging data with a TDS Recon operating SOLO Field. Just Remember, You are unique, just like everybody else! The GPS manufacturer is claiming decimeter accuracy with the subscription service, I will let you know how it turns out. I intend on interfacing the dome with my rugged tablet running both Manifold, and Geo Tracker in Mapinfo to see if this will be a viable solution for higher accuracy mapping and possibly staking. The dome does all of the position calculations internally, then transmits the position to the data collector.
I am going to demo a Bluetooth dome unit next week with a satellite correction service subscription. (In other words, it has an overly busy workflow for me)
I am not real thrilled with Mobile Mapper Office and the hoops necessary to process the field data, or the steps necessary to upload the unit with existing data, but that is just me, and I am always in a hurry. I own a Promark 3, and while it can be quirky at times and the Mapping software is rudimentary at best, it has been very productive. Magellan has the Mobile Mapper Series as well as the Promark 3 series. SSF file that would need to be converted for use elsewhere. You would have to postprocess Terrasync with Pathfinder Office to export a shape file or other type of drawing file since the data is stored in a Trimble. I feel that Terrasync would be the easiest to set up.ĪrcPad is an alternative that would export shape files directly. Trimble will give several field data collection options. In other words, it is designed for work down south or along the coasts more than it is for inland work.
Magellan, Trimble and several others make NAV beacons for their handheld GIS units that will approach submeter accuracy most of the time, but it isn't going to do you any good up in North Dakota unless there are navigable waterways. I have seen them cheaper, but I am including software cost. You are looking at about $7000.00 plus to get into these units. Trimble has the Geo HT which claims submeter but I have my doubts that you can rely on that accuracy 100% of the time.
You would also be looking at around $9000.00 entry price for a system. The Starfire service would limit you to Navcom Technologies equipment. Or a subscription satellite correction service such as Starfire or Omnistar HP. Real Time Standalone Submeter GPS units are going to limited to those that have access to a NAV beacon,