Ensuring Deterministic Timing in a Federated GNSS Correction Pipeline with Lingua Franca

Tejeswini Jayaramareddy; Hokeun Kim; Hoeseok Yang

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arXiv · 2606.31415

Ensuring Deterministic Timing in a Federated GNSS Correction Pipeline with Lingua Franca

Tejeswini Jayaramareddy·Hokeun Kim·Hoeseok Yang

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Abstract

Embedded systems that combine hardware interrupts, buffering, and distributed communication are often perceived as inherently asynchronous and difficult to analyze. However, such systems can exhibit a deterministic timing structure when modeled using explicit logical-time semantics. This paper presents a Global Navigation Satellite System (GNSS) correction-data pipeline implemented as a federated Lingua Franca (LF) application. The federated LF program decomposes the end-to-end pipeline into reactors with explicit time semantics, including a time-triggered GNSS receiver, a UART interrupt stream derived from baud rate and First-In First-Out (FIFO) buffer characteristics, a periodic forwarding task, and downstream processing with jitter monitoring. Federated execution and runtime logs validate the analytically derived deterministic timing structure-including interrupt cadence, ring-buffer evolution, packetization behavior, and physical--logical jitter-yielding a reproducible and predictable timing profile.

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BibTeX RIS

Tejeswini Jayaramareddy, Hokeun Kim, Hoeseok Yang. 2026-06-30. Ensuring Deterministic Timing in a Federated GNSS Correction Pipeline with Lingua Franca. https://arxiv.org/abs/2606.31415

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