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Running the base version of R21 without updates can lead to performance issues and compatibility problems. Updating provides several benefits:
Click and wait for the process to finish. Do not launch the application immediately after completion. Step 3: Downloading and Applying Service Pack Updates (UPD)
Among the many service packs and releases, (often referred to as Version 5 Release 21) holds a special place. Released in the early 2010s, R21 was praised for its stability, enhanced generative shape design, and streamlined user interface compared to its predecessors. Even today, many engineering firms and freelance designers refuse to upgrade because R21 offers a perfect balance of "lightweight" performance and powerful tooling. catia v5 r21 zip file upd download
4 GB minimum; 8 GB or higher recommended for complex assemblies.
Accept the default port settings (typically 1570) for the Orbix middleware unless your IT infrastructure dictates a specific port configuration. Running the base version of R21 without updates
Large ZIP files can sometimes become corrupted during download. Ensure you use a download manager to prevent packet loss. Step-by-Step Installation Guide
It's crucial to first address the most common search intent: finding a "free download." Numerous sites offer .zip files of CATIA V5R21, often with generous promises of "lifetime activation" or "cracked" licenses. However, engaging with these presents severe and often hidden dangers. Step 3: Downloading and Applying Service Pack Updates
Intel Xeon, Core i5/i7/i9, or AMD Ryzen/EPYC processors with high single-core clock speeds.
However, be aware that . You will receive no security patches or compatibility fixes for modern Windows updates.
These are just old archives for recording. To download of the newest version, please visit the following GitHub links.
| Version | Date | Binary APs for Windows | Source Programs and Data |
| 2.4.2 p13 | 2018/01/29 | GitHub | GitHub |
| 2.4.3 b34 | 2020/12/29 | GitHub | GitHub |
The 2.4.2 pXX is the stable version with
the newest patches. The 2.4.3 bXX is the
development or beta version with experimental
implementations.
Please refer the support information for bug and known problem list.
GNSS-SDRLIB: Open Source GNSS Software Defined Radio Library (SDR working with RTKLIB)
Google play: RTKGPS+ (Android frontend of RTKLIB)
Overview
RTKLIB is an open source program package for standard and precise positioning with GNSS (global navigation satellite system). RTKLIB consists of a portable program library and several APs (application programs) utilizing the library. The features of RTKLIB are:
(1) It supports standard and precise positioning algorithms with:
GPS, GLONASS, Galileo, QZSS, BeiDou and SBAS
(2) It supports various positioning modes with GNSS for both real-time and post-processing:
Single, DGPS/DGNSS, Kinematic, Static, Moving-Baseline, Fixed, PPP-Kinematic, PPP-Staticand PPP-Fixed
(3) It supports many standard formats and protocols for GNSS:
RINEX 2.10, 2.11, 2.12 OBS/NAV/GNAV/HNAV/LNAV/QNAV, RINEX 3.00, 3.01, 3.02 OBS/NAV, RINEX 3.02 CLK, RTCM ver.2.3, RTCM ver.3.1 (with amendment 1-5), ver.3.2, BINEX, NTRIP 1.0, RTCA/DO-229C, NMEA 0183, SP3-c, ANTEX 1.4, IONEX 1.0, NGS PCV and EMS 2.0 (refer the Manual for details)
(4) It supports several GNSS receivers' proprietary messages:
NovAtel: OEM4/V/6, OEM3, OEMStar, Superstar II, Hemisphere: Eclipse, Crescent, u-blox: LEA-4T/5T/6T, SkyTraq: S1315F, JAVAD: GRIL/GREIS, Furuno: GW-10 II/III and NVS NV08C BINR (refer the Manual for details)
(6) It supports external communication via:Serial, TCP/IP, NTRIP, local log file (record and playback) and FTP/HTTP (automatic download)(7) It provides many library functions and APIs for GNSS data processing:
Satellite and navigation system functions, matrix and vector functions, time and string functions, coordinates transformation, input and output functions, debug trace functions, platform dependent functions, positioning models, atmosphere models, antenna models, earth tides models, geoid models, datum transformation, RINEX functions, ephemeris and clock functions, precise ephemeris and clock functions, receiver raw data functions, RTCM functions, solution functions, Google Earth KML converter, SBAS functions, options functions, stream data input and output functions, integer ambiguity resolution, standard positioning, precise positioning, post-processing positioning, stream server functions, RTK server functions, downloader functions
(8) It includes the following GUI and CUI APs:
| Function | GUI AP | CUI AP | Notes | |
| (a) | AP Launcher | RTKLAUNCH | - | |
| (b) | Real-Time Positioning | RTKNAVI | RTKRCV | |
| (c) | Communication Server | STRSVR | STR2STR | |
| (d) | Post-Processing Analysis | RTKPOST | RNX2RTKP | |
| (e) | RINEX Converter | RTKCONV | CONVBIN | |
| (f) | Plot Solutions and Observation Data | RTKPLOT | - | |
| (g) | Downloader of GNSS Data | RTKGET | - | |
| (h) | NTRIP Browser | SRCTBLBROWS | - |
(9) All of the executable binary APs for Windows are included in the package as well as whole source programs of the library and the APs.
System Requirement
The executable binary GUI and CUI APs included in the package require Microsoft Windows environment. On the other OS or environment, you have to compile and build CUI APs by yourself.
All of the library functions and APIs were written in ANSI C (C89). The library internally uses winsock and WIN32 thread for Windows with the compiler option -DWIN32 and the standard socket and pthread (POSIX thread) for Linux/UNIX without any option. By setting the compiler option -DLAPACK or -DMKL, the library uses LAPACK/BLAS or Intel MKL for fast matrix computation.
The CUI APs were written in ANSI C. The library and CUI APs can be built on many environments like gcc on Linux. The GUI APs were written in C++ and utilize Embarcadero/Borland VCL (visual component library) for GUI toolkits. All of the executable binary APs in the package were built by Embarcadero C++ builder XE2 Starter Edition on Windows 7. The executable GUI APs were tested on Windows 7 (64bit). The CUI APs were also built and tested on Ubuntu 11.04 Linux and x86 CPU.
Notes: Previous versions of RTKLIB until ver. 2.4.1 were built by a free edition of Borland C++ (Turbo C++ 2006). Turbo C++, however, is no longer supported in ver. 2.4.2 because of a type incompatibility problem of GUI strings between ver.2.4.2 and the previous ones.
License
The RTKLIB software package is distributed under the following BSD 2-clause license and additional exclusive clauses. Users are permitted to develop, produce or sell their own non-commercial or commercial products utilizing, linking or including RTKLIB as long as they comply with the license.
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Copyright (c) 2007-2013, T. Takasu, All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- The software package includes some companion executive binaries or shared libraries necessary to execute APs on Windows. These licenses succeed to the original ones of these software.
- (deleted) (2014/01/29)
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Notes: Previous versions of RTKLIB until ver. 2.4.1 had been distributed under GPLv3 license.
History
| Version | Date | Description |
|---|---|---|
| 1.0 | 2007/01/25 | New release |
| 1.1 | 2007/03/20 | Add rnx2rtkp_gui, fix bugs, improve performance. |
| 2.1.0 | 2008/07/15 | Refactored, add applications. |
| 2.1.1 | 2008/10/19 | Fix bugs. |
| 2.2.0 | 2009/01/31 | Add stream.c, rtksvr.c,preceph.c in src, Add rtknavi, rtkpost_mkl, srctblbrows, strsvr in app. |
| 2.2.1 | 2009/05/17 | See Release Notes |
| 2.2.2 | 2009/09/07 | See Release Notes |
| 2.3.0 | 2009/12/17 | See Release Notes |
| 2.4.0 | 2010/08/08 | See Release Notes |
| 2.4.1 | 2011/06/11 | See Release Notes |
| 2.4.1 | 2013/02/23 | An exclusive clause of the licence is added. |
| 2.4.2 | 2013 04/29 | See Release Notes |
Acknowledgement
The original code of src/rcv/nvs.c was provided by Michele Bavaro.

| Copyright (C) 2007-2013, T.TAKASU, All rights reserved. |