For experienced users only. Please follow the instructions carefully since changing the configuration of the GNSS receiver can affect the INS performance if done incorrectly.

Topics: GNSS, receiver, NovAtel

Purpose: To understand the different GNSS correction services that can be used to enhance the performance and precision of the INS-DU.

Last Updated: October 2020

There are 2 different categories of GNSS correction services. These categories are based on either the State Space Representation (SSR) or Observation State Representations (OSR) of the errors. Both categories solve the same problem, but each use different techniques, delivery mechanisms, and core technologies to do so. Both SSR and OSR correction services are used to mitigate key GNSS errors (i.e. orbits, biases, clocks, etc.) in order to enable high precision GNSS performance.

Topics: INS, GNSS, receiver, Service, Correction, INS-DU

Purpose: Global Navigation Satellite Systems (GNSS) such as GPS or BeiDou can sometimes have confusing terminology. This knowledge base document will explain some of the most commonly used terms regrading GNSS

Last Updated: September 2020

Constellation: A constellation is the collection of satellites that make up a particular system. Some examples of constellations are: GPS, BeiDou, Galileo, and GLONASS.

Topics: Constellation, GPS, GNSS, BeiDou, GLONASS, Galileo, Signals, Frequencies, Correction

Purpose: To understand the grounding of an Inertial Labs device with a GNSS receiver and to understand the configuration of the TNC antenna cable shield.

Last Updated: July 2020

The shield of the TNC antenna cable is connected to the chassis of the device, and on the GNSS receiver this shield is connected to the power return potential. Since that is the case, the whole enclosure is under the same potential. We recommend users to isolate the chassis from the power return potential if it is required in their application, as we have not had any problems related to chassis isolation in any application.

Topics: GNSS, receiver, TNC, Antenna

Purpose: To understand how to arrange RTK corrections for an INS with included RTK.
Last Updated: July 2020


For Using Physical Base Station

To receive the observation data of a remote base station at the rover receiver of the INS and get the RTK solution, the user can use the STRSVR tool from the RTKLIB package.

Topics: INS, GNSS, Input, RTCM, Correction, RTK

Purpose: To understand how to use dual antenna INS as a single antenna INS.

Last Updated: June 2020

The user should unplug the second antenna and leave the primary plugged in. For reference the primary antenna port is labeled as “A1” on the device, and the secondary antenna port is labeled as “A2”. Then, change the heading correction type in the Graphic User Interface (GUI) from “Dual GNSS” to the one that fits your application. To do so, go to the “Options” tab and then select “Correction options” and then change the correction type.

Topics: INS, GNSS, Heading, Correction, Dual, Single

Purpose: To determine which type of heading correction is best for different applications of the INS.

Last Updated: June 2020

For INS-D/DL: The “Dual GNSS” type of heading correction can be used for any application that allows the installation of the INS and two GNSS antennas with a baseline of at least 1.5 m (it can be static, quasi-static, and slowly moving objects as well as objects with high dynamic). So, any application where two antennas can be installed with a clear view of the sky and less than 1.5 meters away from one each other. When Dual GNSS type is used, the algorithm starts as soon as the GNSS receiver provides a heading solution.

Topics: INS, INS-D, INS-DL, INS-B, INS-P, GNSS, Heading, Magnetometer, Correction

Purpose: Identify the pin outputs for the GNSS output on the INS-B, INS-P, INS-D, INS-DL

Topics: INS, INS-D, INS-DL, INS-B, INS-P, GNSS, Pinout

Purpose: Steps that should be performed in order to upgrade a NovAtel receiver model.

Step 1.

Please provide Inertial Labs Customer Service (email to support@inertiallabs.com) with serial number of the receiver that needs the upgrade and desired model (or desired features).

Topics: GNSS, receiver, update, NovAtel

Purpose: The purpose of this document is to show the different satellite systems and their corresponding signals and frequencies in MHz.

Topics: GNSS, Signals, Frequencies