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Tomoya Hagen

PROFILE

Tomoya Hagen

Over a three-month period, contributed to the SpaceTeam/STS1_COBC_SW repository by developing and integrating advanced channel coding features to enhance data integrity and transmission reliability. Implemented Reed-Solomon encoding and decoding, as well as bit scrambling and unscrambling, using C++ and CMake to strengthen error correction in transfer frames. Introduced a ViterbiCodec-based convolutional coding module for RF communication, complete with unit tests and build system integration. Enhanced deployment flexibility by adding a build-time toggle for punctured and non-punctured convolutional coding paths, refactoring the codebase to support both modes and streamline maintenance across embedded systems and diverse hardware configurations.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

5Total
Bugs
0
Commits
5
Features
3
Lines of code
1,356
Activity Months3

Work History

August 2025

2 Commits • 1 Features

Aug 1, 2025

August 2025 (SpaceTeam/STS1_COBC_SW) delivered a configurable convolutional coding pathway by introducing a build-time toggle to enable or disable puncturing. This adds flexibility for deployment and testing across hardware configurations while maintaining a unified encoding path. The work included a new non-punctured implementation and a refactor of ViterbiCodec to support both punctured and non-punctured modes, reducing maintenance overhead and enabling dual-mode operation. The changes were implemented through two commits and set the foundation for performance tuning and broader deployment scenarios.

July 2025

2 Commits • 1 Features

Jul 1, 2025

Concise monthly summary for 2025-07: Delivered Viterbi convolutional coding integration for channel coding and RF transmission in SpaceTeam/STS1_COBC_SW. Implemented ViterbiCodec, added new source/header files, integrated with build system, and created unit tests. RF path now encodes data using Viterbi coding to improve link reliability. Prepared foundation for robust error correction across the telemetry stack.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for SpaceTeam/STS1_COBC_SW: Implemented robust channel coding with Reed-Solomon encoding/decoding and bit scrambling/unscrambling for transfer frames; added tests and integrated into the system. This upgrade improves data integrity and transmission reliability across channels.

Activity

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Quality Metrics

Correctness92.0%
Maintainability84.0%
Architecture86.0%
Performance74.0%
AI Usage24.0%

Skills & Technologies

Programming Languages

C++CMake

Technical Skills

Algorithm ImplementationBit ScramblingBuild SystemC++C++ DevelopmentCMakeChannel CodingEmbedded SystemsError Correction CodingRF CommunicationReed-Solomon CodesUnit Testing

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

SpaceTeam/STS1_COBC_SW

Jun 2025 Aug 2025
3 Months active

Languages Used

C++CMake

Technical Skills

Bit ScramblingChannel CodingEmbedded SystemsReed-Solomon CodesUnit TestingC++