OVERVIEW

March 4, 2026 ยท View on GitHub

     MADOCALIB: MADOCA-PPP Test Library

OVERVIEW

MADOCA-PPP test library is a reference implementation of MADOCA-PPP, and it contains a post-processing PPP utility. Please note it doesn't assure anything in terms of its effectiveness or reliability.

MADOCA-PPP is Multi-GNSS Advanced Orbit and Clock Augmentation - Precise Point Positioning service of QZSS.

The library is derived from RTKLIB (version 2.4.3 b34, Ref. Note1) and functions of PPP-AR and message conversion copyrighted by the third party.

This package also includes an optional GUI application (MADOCALIB_GUI) implemented in Python. The GUI acts only as a frontend and does not alter the MADOCALIB processing logic.

USAGE

Go to the folder of "sample_data". Double-click and execute the batch file of "exec_ppp.bat" on your Windows PC. Please refere to the MADOCALIB manual for usage of MADOCALIB in detail. The distribution also provides an optional graphical user interface, which may be started from the bin folder in the same manner.

LICENSE

The MADOCALIB is distributed under the following BSD 2-clause license (http://opensource.org/licenses/BSD-2-Clause) and additional exclusive clauses. Users are permitted to develop, produce or sell their own non-commercial or commercial products utilizing, linking or including MADOCALIB as long as they comply with the license.

Copyright (C) 2023-2026 Cabinet Office, Japan, All rights reserved. Copyright (C) 2024-2026 Lighthouse Technology & Consulting Co. Ltd., All rights reserved. Copyright (C) 2023-2024 Japan Aerospace Exploration Agency. All Rights Reserved. Copyright (C) 2023-2024 TOSHIBA ELECTRONIC TECHNOLOGIES CORPORATION. All Rights Reserved. Copyright (c) 2007-2020, 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.

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.

ADDITIONAL LICENSE INFORMATION (GUI component)

The license information for the MADOCALIB_GUI(madocalib_gui.exe) is provided in "MADOCALIB_GUI_LICENSE.txt". Please refer to that file for the full text of all licenses included in the PyInstaller packaged GUI application. The GUI also includes an application icon based on the QZSS logo. For information regarding the ownership and usage guidelines of the QZSS logo, please refer to: https://qzss.go.jp/overview/download/logo.html

#UPDATE HISTORY

  • 2023/03/31 1.0b - The first public version as beta version

  • 2024/03/11 license updated

  • 2024/03/31 1.1b - not open to the public

  • 2024/07/01 1.2 - The second public version. Support MADOCA-PPP ionospheric corrections.

  • 2024/08/23 1.3 - The third public version. Add application of cssr2ssr (convert cssr message file to ssr message file). Support ambiguity re-initialization by Compact SSR phase discontinuity indicator. Apply phase bias correction only when performing ambiguity resolution. Other performance improvements.

  • 2024/11/22 1.4 - The 4th public version. Support for multiple L6D file input for rnx2rtkp. Antenna file path can be specified by command line option of rnx2rtkp. Support upper case hour code (%HU-> h : hour code (A=0,B=1,C=2,...,X=23)). Fix bug for incorrect maxframe calculation for L6D decoding. Apply phase bias correction even when ambiguity resolution is not performed.

  • 2025/05/26 1.5 - The 5th public version. PPP processing is performed normally even when an undefined GNSSs are stored in the reserved GNSS ID of the Compact SSR. (See mdccssr.c)

  • 2025/05/27 2.0 - The 6th public version. Support IS-QZSS-MDC-004. Support triple/quad-frequency PPP and PPP-AR. Support multiple input files of qzssl6e_file for multiple PRN input. Added the makefiles for Linux.

  • 2026/02/19 2.1 - The 7th public version. Added the MADOCALIB_GUI.

#NOTES