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Fundamental AcousticsLaboratories / Est. 1958

FAL-TR-26-004

The Persistent Signal Catalog: behavioral classification of long-duration detections

Current public standard for how the Laboratories classify retained detections and decide what can be released outside the review program.

Public abstract

Defines the public taxonomy used by the Persistent Signal Catalog, including the distinction between transient, persistent, and unresolved entries. The report emphasizes behavior over presumed source and documents the review threshold for public accession.

Citation

Frances Okafor; Naomi V. Ellison; Wen Li. "The Persistent Signal Catalog: behavioral classification of long-duration detections." FAL-TR-26-004. Technical Report. Fundamental Acoustics Laboratories, 2026. Docket PSC-CLASS-2026-A.

Cite the report ID and docket in correspondence. Do not infer that restricted appendices are public unless the access state says so.

Holding
Holding ID
FAL-HOLD-TR26004-2026
Extent
32 pages, public record card
Format
public abstract and requestable record card
Language
English
Rights
Copyright Fundamental Acoustics Laboratories. Public abstracts may be cited with report ID and docket.
Request path
Records-office request through public correspondence

Contents

  • Behavioral taxonomy and reviewer responsibilities
  • Minimum metadata for a public catalog entry
  • False-alarm controls before Class III assignment
  • Public language standards for unresolved detections
Public packet
  • public abstract
  • contents index
  • citation card
  • related-record links
Release boundary
  • abstract and contents are public
  • figures, tables, and raw records may be restricted
  • researchers should cite the docket when requesting review copies
Revision history
2026-06-21

Public abstract issued

Initial public abstract and contents index released with the current catalog standard.

2026-07-01

Language review

Public language was reviewed against the behavioral-classification standard.

Access note

Open abstract
Cite the report ID and docket when requesting materials from the records office. Access may depend on publication status, third-party agreements, and staff availability.
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