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GNSS-SDR
0.0.19
An Open Source GNSS Software Defined Receiver
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GNSS-SDR
0.0.19
An Open Source GNSS Software Defined Receiver
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All the current GPS Interface Control Documents can be downloaded from GPS.gov, the official U.S. Government webpage for GPS.
Official GLONASS webpage: Information-analytical centre official website.
Check the Galileo website of the European Global Navigation Satellite Systems Agency (GSA) and the Galileo website of the European Space Agency. There is a website with Galileo constellation status information from the GSA.
The European Commission is granting free access to the technical information on the future Galileo open service signal, i.e. the specifications manufacturers and developers need to process data received from satellites. This document informs receiver manufacturers, application developers and service providers on how to use the future Galileo system and what they can expect in terms of performance.
Official webpage at beidou.gov.cn
More information about EGNOS can be found through the EGNOS Portal.
The final output of a navigation receiver is usually its position, speed or other related physical quantities. However, the calculation of those quantities are based on a series of measurements from one or more satellite constellations. Although receivers calculate positions in real time, in many cases it is interesting to store intermediate measures for later post-processing. RINEX is the standard format that allows the management and disposal of the measures generated by a receiver, as well as their off-line processing by a multitude of applications.
The National Marine Electronics Association released the NMEA 0183 Interface Standard, which defines electrical signal requirements, data transmission protocol and time, and specific sentence formats for a 4800-baud serial data bus. The standard is available for purchase.
KML is an XML language focused on geographic visualization, including annotation of maps and images. Geographic visualization includes not only the presentation of graphical data on the globe, but also the control of the user's navigation in the sense of where to go and where to look. Google submitted KML (formerly Keyhole Markup Language) to the Open Geospatial Consortium (OGC) to be evolved within the OGC consensus process with the following goal: KML Version 2.2 has been adopted as an OGC implementation standard.
The C++ programming language is standardized by the International Organization for Standardization (ISO), with the latest standard version ratified and published by ISO in December 2017 as ISO/IEC 14882:2017 (informally known as C++17). The list of supported C++ standards (the highest available is automatically selected by the CMake script):
Cellular industry location standards first appeared in the late 1990s, with the 3rd generation partnership project (3GPP) radio resource location services protocol (RRLP) technical specification 44.031 positioning protocol for GSM networks. Today, RRLP is the de facto standardized protocol to carry GNSS assistance data to GNSS-enabled mobile devices, and the term "3GPP specification" now covers all GSM (including GPRS and EDGE), W-CDMA and LTE (including LTE-A) specifications. Precisely, the label "LTE-A" is applied to networks compliant with LTE Release 10 and beyond, which fulfill the requirements issued by the <a href="https://www.itu.int/en/ITU-R/Pages/default.aspx target="_blank">International Telecommunication Union Radiocommunication Sector (ITU-R) in the global standard for international mobile telecommunications (IMT Advanced, also referred to as 4G) access technologies.
Control plane protocols:
User plane protocols:
LTE Release 9 introduced extension hooks in LPP messages, so that the bodies external to 3GPP could extend the LPP feature set. OMA LPP extensions (LPPe), supported in SUPL 3.0, build on top of the 3GPP LPP reusing its procedures and data types. Check the OMA Specifications webpage for updated information about LPP Extensions (LPPe) Specification.
1.8.14