What this category of data looks like
Satellite communications investment research data comes primarily from International Telecommunication Union orbital filing data, public parameter documents from satellite manufacturers, ground station operation logs, industry research reports, and real-time telemetry data. Update cycles vary widely. Orbital filing parameters are updated quarterly or annually. Real-time telemetry data updates every second. Industry dynamics are released immediately alongside emergency missions. Document formats include PDF deep research reports, structured Excel orbital data tables, JSON-formatted real-time status interface data, and policy announcements on web pages. Fields include orbital inclination, downlink frequency, beamwidth, and coverage area latitude and longitude range. Their respective units are degrees, GHz, degrees, and square kilometers.
Constraints on document parsing and chunking
Multi-source, heterogeneous document formats require parsing workflows to adapt to different format rules. JSON-formatted real-time telemetry data must retain field hierarchy and must not be split into plain text. Excel orbital data tables with multiple worksheets must be split by individual worksheet before further processing. Real-time data timeliness requires parsed chunks to be bound with collection timestamps. This prevents outdated data from appearing in search results. Professional field units and precision requirements are strict. Units for parameters such as orbital inclination and downlink frequency must fully align with the source document. Losing unit information during chunking will affect investment research judgments. For long documents requiring chapter-based splitting, deep research reports must be split along chapter boundaries instead of using fixed-length chunking. This avoids splitting complete descriptions of the same parameter across multiple retrieval chunks.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PARSE_FILE_MAX_SIZE | 200 MB | Satellite communications research reports often contain a large number of high-resolution remote sensing images, resulting in large individual file sizes. This setting must accommodate the upload limits of such documents. |
maxChunkSize | 800–1200 characters | Satellite communications parameter content requires complete retention of field and unit descriptions. Chunks that are too long reduce search accuracy, while chunks that are too short disrupt the integrity of parameter descriptions. |
chunkOverlap | 100–150 characters | Overlapping sections preserve contextual association when content such as orbital parameters or policy clauses spans chunks, preventing loss of critical connecting information during searches. |
ENABLE_OCR_PARSE | Enabled | Some satellite manufacturer parameter documents are scanned PDF files. OCR parsing extracts printed parameter text from these files, preventing data loss. |
PARSE_TIMEOUT_SECONDS | 600 seconds | Large multi-worksheet Excel orbital data tables or deep research reports over 100 pages have long parsing times. Extending the timeout prevents task interruptions. |
AUTO_CHUNK_BY_HEADING | Enabled | Deep research reports have clear chapter headings. Splitting by headings ensures content on the same topic is concentrated in a single chunk, improving search relevance. |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Symptom: An
OCR Errorerror occurs when parsing scanned satellite parameter PDF files. Logs show text recognition failed. Cause: TheENABLE_OCR_PARSEconfiguration is not enabled, or the OCR engine is not loaded correctly, making it impossible to extract printed parameter text from scanned documents. - Symptom: In version 4.8.9's simple mode, uploading a document does not trigger the parsing process, and no retrieval chunks are generated. Cause:
AUTO_PARSE_ON_UPLOADis not set to enabled, or the currently used large language model does not have file parsing permissions, so the system does not automatically trigger parsing tasks. - Symptom: After uploading a document, no matching results appear in searches, and only error prompts are displayed in retrieval results. Cause: Key parameter unit information was not retained during chunking, or
maxChunkSizewas set too small, splitting complete orbital parameter descriptions across multiple chunks, making it impossible to match full query conditions during searches.
How to Confirm Configurations Are Correctly Set
- Upload a scanned satellite parameter PDF file, check if OCR recognition records exist in the parsing log, to confirm the OCR parsing configuration is active.
- Upload a multi-worksheet Excel orbital data table, check if parsed chunks are split by worksheet, to confirm multi-table parsing configurations are active.
- Submit a search query containing specific orbital parameters and units, check if retrieval results include matching field information, to confirm key details are retained during chunking.
- Check the time consumption records of file parsing tasks, confirm that the timeout limit is not triggered, meeting the parsing requirements of the current document.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.