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Featured Surveying Discussions (12)

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GPS Verticle hit and Miss ???

Comment by Jim 1 second ago Delete Comment Verticle, GPS is seems undesirable at times. 1/4" - 2' variables. Not good when your putting in Pavement grades, our control. Any one have insight here. I have had time of hitting right on but the hit and mi

Started by Jim

8 Replies

Data Link for your GNSS System

Is the CELL Phone really the Achilles Heel of your GNSS Geo Station?Unfortunately, there is no magic solution. Your coverage is limited by the service provider that you have chosen to use. In speaking with some infrastructure people at Trimble, their

Started by Jim

3 Replies

geoid09 in gfs format file so I can SD card from PC

I have the ProMark3 RTK (PM3R) and no one so far can seem to show me a way to take the geoid09.geo file and convert it to a gsf file (geoid separation file) for my unit. Randy Black was nice enough several years ago to create me a gsf of geoid03 for

Started by Gary Breisch

8 Replies

Repeater Set Up?

Hello, could someone please walk me through configuring and setting up a repeater? I have a Pacific Crest HPB450 radio. I have a lot of options for GPS equipment...we have a R7, 5700,5800,4800.... trimark3's....multiple antenna types. We can also con

Started by Paul Quagge

4 Replies

Virtual Reference Station

Here are some informative papers on VRS, I found while surfing the net

Started by Ty Olinghouse

1 Reply

Survey Legend

Home-Made GPS Receiver How-to

I was blown away when I saw (via Make)that someone had created a home-made GPS receiver. Andrew Holme just may be a genius. He built an incredible four-channel GPS receiver using some repurposed FPGA board from a previous frequency synthesizer proje

Started by ⚡Survenator⌁

1 Reply

Land Surveyor

LightSquared GPS

LightSquared GPS is a problem! We need more discussion on this topic because it affects every Land Surveyor on Earth. We could even have a group solely dedicated to this topic, but for now the GPS group will have to speak LOUD about the emerging th

Started by Scott D. Warner, PLS

5 Replies

Land Surveyor

Glossary Guide to GPS Terms

Below is a good start for a glossary style definitions list related to GPS Terms. Feel free to add your terms as comments below the post.

- A -

Almanac - the Almanac is a file which contains positional information for all of the GPS satellites. The

Started by SurveyEarthinaDay

1 Reply

OPUS Post Processing

Re: http://www.ngs.noaa.gov/OPUS/

First time user.......

Sokkia Startus L1 ..... Seems like I filled out the form correctly.

I've converted the raw file (*.str) to Rinex format and uploaded it to OPUS

ERROR MSG:

FILE: 17691301.12O OP1329502833064

1010

Started by marcel milleur

1 Reply

Party Chief

Poor Mans GPS Network by Phil Stevenson

Phil Stevenson, Land Surveyors United member, Magellan-Ashtech equipment expert and professional self-proclaimed "Dirt Surveyor" wrote a paper once called "Poor Man's GPS Network," which I have for you below to download and read.

Click to Open and

Started by Jaybird

0 Replies

HTC Android GPS Apps

I want a free or low priced GPS app or program that will show and store bread crumb "trails" to the SD card. I will use it on an Android Desire Phone Device and/or transfer and show on PC and overlay onto Google Maps or Google Earth.

Display of

Started by Gary Breisch

2 Replies

Take GPS Indoors

Indoor Positioning

Rosum, Siano Introduce ALLOY Chip Using TV Signals to Take GPS Indoors

March 1, 2010

Rosum Corporation announced today the launch of ALLOY, a location and synchronization solution for indoor and urban environments. The ALLOY chip, wh

Started by Jim

4 Replies

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Geodetic / Global Positioning Systems

Rosum, Siano Introduce ALLOY Chip Using TV Signals to Take GPS Indoors

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