Kshana
Copyright 2026 Ashforde OÜ

Dual-licensed. You may use this software under EITHER:
  (a) the GNU Affero General Public License v3.0 only (AGPL-3.0-only), the full
      text of which is in LICENSE; OR
  (b) a commercial licence from Ashforde OÜ, for use that the AGPL does not suit
      (e.g. embedding in proprietary/closed-source products, or offering a network
      service without releasing your source). Contact contact@ashforde.org.

See LICENSING.md for which licence applies to your use and how the two relate.

"Kshana" and associated marks are trademarks of Ashforde OÜ. The licence applies
to the source code; it does not grant rights to the project name or marks. Forks
and derivative distributions must use a different name.

Third-party data:
  Contains data from the Lunar GNSS Receiver Experiment (LuGRE) Mission Data,
  J. Parker, F. Dovis et al., NASA and Agenzia Spaziale Italiana, Zenodo,
  doi 10.5281/zenodo.16411687, licensed under CC BY 4.0. Kshana's fixtures are
  derived extracts; no sample file is redistributed (see docs/LUGRE-DATA.md).

  Contains Galileo satellite metadata (box-wing panel areas, optical properties and
  satellite masses in src/srp_boxwing.rs) from the European GNSS Service Centre,
  https://www.gsc-europa.eu/support-to-developers/galileo-satellite-metadata,
  (c) EU 2011-2026, reproduced with acknowledgement under the GSC copyright notice;
  accessed 2026-10-13. These values are not licensed under the AGPL.

Galileo OSNMA:
  The OSNMA receiver-side verifier (src/osnma, docs/OSNMA.md) implements the
  algorithms of the Galileo OSNMA Signal-in-Space ICD and Receiver Guidelines, (c)
  European Union. Kshana grants no rights under the European Union's intellectual
  property in that interface; users rely on the ICD's own authorisation (its Annex E).
  See the notice in docs/OSNMA.md. Kshana is not developed by, used by, approved by or
  endorsed by the European Union, the European Commission or EUSPA.

Galileo E1 primary memory codes:
  Not bundled since 0.36: the E1-B and E1-C primary memory codes (C7_E1B.txt,
  C8_E1C.txt) are supplied by each user (scripts/fetch_galileo_e1_codes.sh), extracted
  byte for byte from the attachments of the European GNSS
  (Galileo) Open Service Signal-In-Space Interface Control Document, Issue 2.0,
  January 2021 (OS SIS ICD Annex C.7 and C.8), (c) European Union 2021. Source:
  https://www.gsc-europa.eu/sites/default/files/sites/all/files/Galileo_OS_SIS_ICD_v2.0.pdf
  (SHA-256 ce97057a9e9d74cc41a6b986c6e9ef03ce420eda474787b4f8f0456b369a81c0); see
  data/galileo-os-sis-icd/PROVENANCE.md. The ICD states that they are Technical Data
  subject to the European Union's intellectual property rights, used under the EU's
  "Authorisation Concerning the OS SIS ICD IPRs" (Annex G of Issue 2.0, Annex H of
  Issue 2.1), a non-exclusive, royalty-free, non-transferable and non-licensable
  covenant. They are NOT licensed under the AGPL-3.0 or the commercial licence, and
  Kshana grants no rights in them. The ICD allows redistribution only for non-commercial
  purposes, so the repository does not carry them; see LICENSING.md.
  Kshana is not developed by, used by, approved by or endorsed by the European Union.

RTCM 3 MSM reader:
  src/receiver_trust/machines/rtcm3.rs reads RTCM 3 MSM4 and MSM7 observation messages using
  the frame layout, field widths and signal tables published in the open-source decoder pyrtcm
  1.2.0 (https://pypi.org/project/pyrtcm/), used under its BSD 3-Clause licence, reproduced
  here as that licence requires. No text of the RTCM 10403 standard is included, and Kshana
  makes no claim about, and grants no rights in, that standard.

  ----- pyrtcm licence -----
  BSD 3-Clause License ("BSD License 2.0", "Revised BSD License", "New BSD License", or "Modified BSD License")

  Copyright (c) 2020, semuadmin (Steve Smith)
  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.
      * Neither the name of the <organization> nor the
        names of its contributors may be used to endorse or promote products
        derived from this software without specific prior written permission.

  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 <COPYRIGHT HOLDER> 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.
  ----- end of pyrtcm licence -----
