Knowledge Base

Campaign Data Collection Modes and Memory Requirements

Campaign Data Collection Modes and Memory Requirements

GPS receivers can be operated in several modes such as logging data to a single file, logging data according to pre-programmed sessions, logging stop-and-go kinematic files, or streaming data to an external device. The mode selected depends on the particular data collection method used (Section 3). Typically data collection is started and a file name and antenna height information are entered in the receiver, field notes, or both. The user also selects the survey data collection sample rate and the elevation cutoff angle depending on field objectives. There must be enough free memory in the receiver for the desired survey:

For example, a Trimble 5700 or R7 receiver can log data for about 3 months at the default 15 second sample rate with a 5 degree elevation mask onto a 128 MB compact flash card.

A Trimble 4700 receiver can log data for about 4 days at the default 15 second sample rate with a 13 degree elevation mask.

A 5Mb memory Trimble 4000 SSi receiver at a 30-second sample rate, 15 degree elevation mask can log data for about 7 days before the internal memory fills up. Once a survey is started, the front panel status screen will display an estimate of the memory remaining. This number is optimistic, and should be multiplied by 0.75 for a realistic estimate.

Typical sample rates and elevation cutoff:

Survey Style

Sample Rate

Elevation Cutoff Angle

Static Surveys

30 seconds

5 degrees

Rapid Static

15 seconds

13 degrees


1-15 seconds

13 degrees

Attached Files
There are no attachments for this article.
There are no comments for this article. Be the first to post a comment.
Security Code Security Code
Related Articles RSS Feed
UNAVCO Polar Services Trimble NetR9 Campaign Kit
Viewed 4581 times since Mon, Aug 15, 2016
GPS Data Collection Methods
Viewed 39500 times since Thu, Feb 25, 2010
UNAVCO Investigator Manual - Campaign Procedures
Viewed 3803 times since Tue, Nov 24, 2009
UNAVCO Trimble NetR9/R8 Campaign Kit
Viewed 5728 times since Tue, Aug 23, 2016
UNAVCO Trimble NetRS Campaign Kit
Viewed 8687 times since Fri, Jul 30, 2010
Campaign Surveys - How to obtain high-confidence coordinates for a base station
Viewed 16021 times since Tue, Jan 26, 2010
UNAVCO Campaign GPS/GNSS Handbook
Viewed 3292 times since Wed, Mar 24, 2010
UNAVCO Topcon GB-1000 Campaign Kit
Viewed 47423 times since Wed, Jul 14, 2010
UNAVCO Trimble 5700/R7 Campaign Kit
Viewed 30383 times since Mon, Mar 22, 2010

Last modified: 2019-12-27  16:36:35  America/Denver