Daichi | Pdf

“Daichi” PDF metadata significantly improves SAR processing accuracy. We recommend automated PDF parsing for large archives.

The “Daichi PDF” system is a proposed document management standard for cross-institutional data sharing. It combines structured PDF/A-3 with embedded JSON metadata. This paper outlines its architecture, use case in digital preservation, and comparison with existing PDF standards. daichi pdf

Named after the Japanese word for “earth/ground” (大地), Daichi PDF aims to be a foundational layer for sustainable document workflows. It combines structured PDF/A-3 with embedded JSON metadata

The ALOS “Daichi” (2006–2011) provided unprecedented L-band SAR coverage. While raw data is distributed in CEOS or GeoTIFF formats, accompanying PDF files (observation parameter summaries, calibration certificates, and quick-look reports) are often underutilized. This paper aims to integrate those PDF metadata into a processing workflow. accompanying PDF files (observation parameter summaries

The PDF calibration reports reduced phase unwrapping errors by 18% compared to using default parameters.