SBAS Knowledge Base

SBAS Research MOC

5 min read

🗺️ SBAS Research Map of Consciousness

Initialization review — 2026-04-23

  • Parent navigation: SBAS MOC
  • Current structure is useful for navigation, but much of the content is still draft synthesis rather than source-grounded research.
  • Priority improvement area: create dedicated source notes before treating quantitative performance claims or standards mappings as settled.
  • Use this MOC to navigate work-in-progress research, not as a standalone authority.

📊 Research Portfolio Overview

Knowledge Domains

SBAS FUNDAMENTALS
    ├── GNSS Error Sources
    │   ├── Ionospheric Delay
    │   ├── Tropospheric Delay
    │   ├── Ephemeris Errors
    │   └── Receiver Noise
    ├── SBAS Architecture
    │   ├── Space Segment (GEO Satellites)
    │   ├── Ground Segment (Reference Stations)
    └── User Segment (Receivers)

CIVIL AVIATION APPLICATIONS
    ├── Approach Procedures
    │   ├── LPV (Localizer Performance with Vertical)
    │   ├── APV (Approach with Vertical Guidance)
    │   ├── LNAV/VNAV
    │   └── RNAV (GNSS) Approaches
    ├── Terminal Operations
    ├── En-Route Operations
    └── Oceanic/Remote Operations

REGIONAL SYSTEMS
    ├── WAAS (Wide Area Augmentation System)
    ├── EGNOS (European Geostationary Navigation Overlay Service)
    ├── MSAS (Multi-functional Satellite Augmentation System)
    ├── GAGAN (GPS Aided Geo Augmented Navigation)
    ├── BDSBAS (BeiDou Satellite-Based Augmentation System)
    ├── Other National Systems
    └── ASEAN implementation branch

COMPARATIVE ANALYSIS
    ├── SBAS vs GBAS
    ├── SBAS vs ABAS
    ├── SBAS vs RAIM
    └── ARAIM (Advanced RAIM)

STANDARDS & CERTIFICATION
    ├── ICAO SARPs / GNSS guidance ([[Source - ICAO Annex 10 Volume I GNSS SBAS]] routing note added; Doc 9849 scaffold added)
    ├── RTCA / EUROCAE equipment standards (DO-229 retained and public-product/regulatory-signal reviewed; DO-242 and DO-289 red-flagged for SBAS use)
    ├── FAA/EASA TSO-ETSO article-approval layer ([[Source - FAA TSO-C145e and TSO-C146e]], [[Source - EASA ETSO-C145e and ETSO-C146e]])
    ├── EUROCAE (ED-52, ED-102, ED-142)
    └── National Regulations

INTEGRITY & SAFETY
    ├── Protection Levels
    ├── Alert Limits
    ├── Fault Detection
    └── Risk Assessment

🔬 Research Methodology

Evidence Hierarchy

  1. Primary Sources: ICAO docs, RTCA standards, EUROCAE specs
  2. Technical Literature: IEEE papers, aviation journals
  3. Implementation Reports: Operational system documentation
  4. Empirical Data: Flight test results, performance monitoring

Knowledge Quality Levels

  • Level 1: Verified standards (direct quotes from docs)
  • Level 2: Implementation evidence (test reports, operational data)
  • Level 3: Expert synthesis (multi-source analysis)
  • Level 4: Research frontiers (open questions, emerging tech)

📈 Research Progress Tracking

Current Maturity

  • Conceptual Foundation: 85% complete
  • Source Documentation: 60% complete
  • Synthesis & Integration: 40% complete
  • Aviation Applications: 35% complete

Priority Research Areas

  1. Immediate: Core concept definitions (SBAS, GBAS, ABAS)
  2. Short-term: Regional system comparisons
  3. Medium-term: Civil aviation integration patterns
  4. Long-term: Future trends & open research questions
  5. Current expansion: ASEAN readiness, governance, and service-model research
  6. Empirical: Ionospheric threat discovery for equatorial SBAS using GNSS-RO — IRI-2020 vs GNSS-RO Indonesia, SBAS Ionospheric Threat — Empirical Evidence, Indonesian SBAS ION Paper Iterations

📝 Research Notes Management

Active provenance work

Active regional expansion work

Source Note Format

--
title: [Source Title]
authors: [Author(s)]
source_type: [standard/paper/report/presentation]
date: [YYYY-MM-DD]
topic_tags: [tag1, tag2, ...]
--

## Summary
[Brief summary]

## Key Claims
- Claim 1: [with evidence]
- Claim 2: [with evidence]

## Technical Details
[Specifications, data, methods]

## Limitations & Uncertainties
[What's unknown or disputed]

## Relevance to SBAS
[How this applies to aviation SBAS]

Synthesis Note Format

--
title: [Synthesis Topic]
type: [literature-review/comparative-analysis/integration]
sources: [[Source1], [Source2], ...]
--

## Consensus
[What multiple sources agree on]

## Divergent Views
[Where sources disagree]

## Evidence Quality
[Assessment of source reliability]

## Aviation Implications
[Operational meaning]

🎯 Next Research Steps

Empirical Ionospheric Research (new)

  • Deepen Source - GNSS-RO Indonesia Empirical Study with verified dataset metadata
  • Add ground GNSS CORS/IGS validation for Indonesian TEC
  • Targeted post-sunset GNSS-RO acquisition (18–21 LT gap)
  • Convert threat-budget scaffold into candidate GIVE-like bins after validation
  • Extend IGRF analysis to full-year or multi-year sampling

Week 1-2: Foundation

  • Create core concept notes (SBAS, GBAS, ABAS)
  • Document GNSS error sources
  • Establish SBAS architecture notes

Week 3-4: Applications

  • Create approach procedure notes (LPV, APV, etc.)
  • Document operational use cases
  • Analyze airport accessibility

Week 5-6: Regional Systems

  • Create individual regional system notes
  • Build comparative analysis
  • Document standards requirements

Week 7-8: Integration

  • Complete synthesis notes
  • Build MOC navigation
  • Establish open questions

MOC Version: 1.0 | Status: Research Planning | Next Update: 2026-04-30

GIPTA 2.0 research expansion — 2026-05-01

Institutional navigation upgrade — 2026-05-02

Integrity learning path upgrade — 2026-05-02

Graph View

Backlinks