A RAW TCP/IP data stream connection can be set up for those (often older) GNSS Base Station devices which do not implement the NTRIP protocol. [The NTRIP protocol lives on top of the HTML protocol, which in turn uses TCP/IP to send packets of data, typically containing RTCM messages] Such […]
Considerations for Creating NEAR Streams
This article covers some key considerations when creating Single Baseline NEAR™ streams with the SNIP NTRIP Caster. A NEAR stream is a type of of RTK Network data stream where each end user (the rovers or NTRIP Clients) connects to a single mountPt (often with the word NEAR in its […]
Release 2_12_00 Changes
What is new in the SNIP 2_12_00 release – released November 22nd 2019 (updating the prior release of 2_11_00 of September 10th 2019): This is the next production release of SNIP following the Rev 2_11 release. This release contains many new features as well as several minor SNIP corrections and […]
Using SNIP as a “bent pipe”
SNIP can be used in a “bent pipe” mode for any desired stream. In this mode, any data sent to it is available to be relayed to any client connection (as well as being logged). This mode of operation is commonly used where the Base Station data is not industry […]
Pre Release SNIP editions, 2.x
You have found the SNIP 2.x BETA Release Channel See also: release notes for 2_00_00, 2_01_00, 2_02_00, 2_03_00, 2.04_00, 2.05_00, 2.06_00, 2.07_00, 2.08_00 , 2.09_00, 2.10_00, 2.11_00 and 2.12_00 Some of our licensed users have asked for the development team to post the […]
Adding Base Station Location to STRSVR
This article reviews how to set the location of your GNSS Base Station in the RTKLIB “STRSRV” (stream server) tool. In order to use any GNSS Base Station for RTK, the Rover device MUST know the precise location of the Base. This is sent in the two RTCM3 message types; […]
Decoding MSM messages
SNIP supports the detailed decoding of all the MSM style RTCM3.x messages. This article briefly covers the new features (added in release 2.06). The basics of the RTCM Decoder dialog are covered in this article. This is a powerful tool is intended to assist the SNIP operator when any questions […]
Translating Base Station Details
The Base Station Details dialog is another PFAT Translate function that allows changing various static data fields about the Base Station equipment and configuration. Most of this information is conveyed to the NTRIP Clients in three RTCM3 messages. (The Base Station ID value is repeated in every message and is […]
Setting ADVNULLANTENNA
This article reviews a PFAT Translation feature that allows the SNIP operator to translate and convent messages to send the ADVNULLANTENNA keyword when needed. This ability has use with some GNSS rover devices to inform them that various calibrations offsets associated with the Base Station antenna have already be taken […]
NEAR stream serves no data
This article deals with the several common problems using the NEAR streams that SNIP operators have experienced and how to correct them. The symptoms often start with “…my Rover is not getting any data from the Caster’s NEAR pointPt even thought it connects to it…” The resolution process needs to […]
Release 2_00_00 Changes
What is new in the SNIP 2_00_00 release [released March 13th 2018] This is the next release of SNIP following the Rev 1_12_1 release of January 5th and including various pre-release Beta copies used as the run up for this formal 2.xx release. This release supports for both 32-bit and […]
Removing GLONASS Message Content
This article shows how to set the the PFAT controls to remove classical GLONASS RTCM 3.x messages (message types 1009~1012) from a stream, leaving only the GPS types. This action is often desired to create a new (smaller) stream without GLONASS message payloads for end users who do not need […]
Moving a Base Station’s reported position, a silly example
In this short article we show the effect of moving the ECEF of a Base Station on the rover position to more forcefully demonstrate that whatever the Base Station says, be it right or wrong, the rover will follow. Hence it is very important that the frame of reference used […]
The Stream Menu Controls
The per stream menu system allows access to the settings and controls for each stream by right-clicking on the selected stream. Information about the stream and its Base Station is directly available to display in the console. A helpful tool-tip also provides details about the Base Station. The various PFAT […]
What is ADVNULLANTENNA
A common SNIP message decoder question is… I see a message type appearing in the RTCM3 decoder with ADVNULLANTENNA – what is this for? The Use of ADVNULLANTENNA This indicates a “null antenna” antenna type used (often by Trimble GNSS devices) to denote that the end user (the rover device) […]
Pre Release SNIP editions, 1.x
Note: The content below is overcome by this newer entry serving the needs of the Rev 2.x release. Some of our licensed users have asked for the development team to post the latest edition of SNIP with developing but officially still unreleased features at a common page. This page has […]
Data Streams, Special Features
The SNIP Caster allows you to set up a variety of special features for each individual data stream type. A few other features are set on a Caster-wide basis. This article describes some of the more common features with links for further information. Logging a Data Stream The raw data […]
Converting NAD83 to WGS84
Here is the link you were looking for: http://geodesy.noaa.gov/cgi-bin/HTDP/htdp.prl?f1=4&f2=1 This is your go-to friend for your NAD83 -> WGS84 converting needs! You will find several other useful utilities at that site as well. Hint: When creating a base station location, you MUST convert your base station antenna position to […]
An RTCM 3 message cheat sheet
We are often asked for a list of what the most common RTCM version 3 messages are. Here is a handy cheat sheet to answer this. The first section lists the messages which you are most likely to be concerned about. But if you are developing PPP filters or state […]