Slide 1 / 7 Türkçe Live Observatory
Slide 1 / 7 · NASA Space Apps Challenge 2026 · Dancing with the SARs

OrbitalSAR Reflex

Translating NASA NISAR L-band & Multi-SAR Earth rhythms into real-time surface-change visualizations fused with Meteomatics weather intelligence and 24-byte edge telemetry.

Team OrbitalSAR Reflex (Universal Event)

Volkan Dagli (Team Owner · @pCwOrM) · Murat Emre ÖZKAYA · Prenses Metin (@PrensesMTN)

OrbitalSAR Reflex Mission Patch
Live App: https://orbitalsar.space/Repo: github.com/pCwOrM/orbitalsar-reflex
Slide 2 / 7 · The Challenge & Latency Bottleneck

Seeing Through Clouds — Without Drowning in Gigabytes

Earth's surface shifts continuously through floods, quakes, wildfires, and glacial surges. Radar penetrates darkness and storms, yet two gaps delay public action:

1. Perceptual Barrier

Raw SAR covariance matrices (GCOV) and unwrapped interferograms (GUNW) are hard for communities and emergency planners to interpret alongside weather drivers.

2. Downlink Bottleneck

1.8 GB → 24 B

Standard SAR scenes demand multi-gigabyte links. Critical flood or seismic trigger alerts wait hours unless distilled deterministically on the edge.

3. Ambiguous Backscatter

Radar drops occur in both quiet lakes and flash floods. Cross-checking SAR coherence loss with high-resolution precipitation removes false alarms.

Dancing with the SARsOrbitalSAR Reflex · Slide 2
Slide 3 / 7 · Architecture & Physical Scattering Model

Dual-Frequency SAR + Meteomatics Physical Fusion

Combining NASA NISAR L-band (~24 cm) canopy penetration with Sentinel-1 C-band (~5.6 cm) surface sensitivity and live meteorological telemetry.

Verified Data Ingestion Pipeline

  • NASA CMR NISAR L2: C2854338529-ASF (GCOV) & C2854335566-ASF (GUNW InSAR)
  • NASA ASF Vertex: Sentinel-1 GRD/SLC & Quad-Pol UAVSAR L-band
  • Microsoft Planetary Computer: Public STAC sentinel-1-rtc
  • Meteomatics API: precip_24h:mm, t_2m:C, wind & RH synced to pass epochs

Physical Scattering Signatures

  • Specular Flood Drop: Δσ⁰ ≤ −3.0 dB & Δγ ≥ 0.35 + rain verification
  • Canopy Penetration (L-Band): Double-bounce trunk flooding & RVI burn scars
  • Repeat-Pass Deformation: GUNW interferometric phase shift & coherence loss
  • Cryosphere Surge: Sub-zero temperature gate isolating basal ice shear
src/nasa_stac_client.py · src/sar_reflex_core.pyOrbitalSAR Reflex · Slide 3
Slide 4 / 7 · 0-SRAM / 24-Byte Deterministic Edge Telemetry

From Gigabyte Granules to 24-Byte Verified Reflex Packets

Every anomaly is distilled into a fixed little-endian binary frame (<IffffBBH>) protected by CRC-16, achieving >7.5×10⁷× alert bandwidth compression.

Göksu Sample Frame (24 B): ab 89 d5 6a | ae 47 11 42 | 85 eb 07 42 | c1 a8 c0 c0 | 0a d7 23 3f | 01 | 91 | 19 71

Bytes 0–11 (Space-Time)

uint32 epoch seconds + float32 latitude & longitude pinpoint exact disaster footprint.

Bytes 12–21 (SAR Physics)

float32 Δσ⁰ (dB), float32 Δγ coherence drop, uint8 anomaly code (0–5) & severity (0–255).

Bytes 22–23 (CRC-16)

Deterministic zlib.crc32(body) & 0xFFFF checksum blocks bit corruption across narrowband downlinks.

Bit-identical in Python & Web Browser JSOrbitalSAR Reflex · Slide 4
Slide 5 / 7 · Hometown Case Study: Göksu Delta & Mersin–Taurus Basin, Turkey

Storm Pulse × NISAR L-Band Flood Reflex (36.32°N, 33.98°E)

Our hometown basin connects Taurus mountain runoff to ecologically vital Göksu wetlands and coastal farms.

Verified October 2026 Multi-Sensor Sync

  • NASA NISAR GCOV: NISAR_L2_PR_GCOV_033_100_A_020... (2026-10-19)
  • NASA NISAR GUNW: 12-day pair 2026-10-07 → 2026-10-19
  • Planetary Computer S1: Live Mersin coastal sentinel-1-rtc swath
  • Meteomatics 24h Rain Peak: 42.59 mm/24h logged inside window

OrbitalSAR Reflex Verdict

FLOOD_INUNDATION

Δσ⁰ = −6.02 dB · Coherence Drop Δγ = 0.64 · Severity = 145/255 · Weather×SAR Confidence = 74.5%.

Interactive layer wipe compares NISAR HHHH / HVHV polarizations against GUNW and Sentinel-1 VV/VH.

Göksu Delta & Mersin–Taurus CorridorOrbitalSAR Reflex · Slide 5
Slide 6 / 7 · Global Dance Across 4 Study Continents

Four Distinct Surface Physics Regimes Verified Live

Hayward Fault, CA (USA)

SURFACE_DEFORMATION (Sev 76)
NISAR GUNW (2026-10-09→21) + NASA Quad-Pol L-band UAVSAR track fault creep & Delta levees.

Central Amazon (Brazil)

WILDFIRE_SCAR (Sev 93)
NISAR L-band DHDH penetrates closed canopy (ΔRVI = −0.65) where optical clouds blind passive sensors.

Malaspina Glacier (Alaska)

GLACIER_SURGE (Sev 98)
Sub-zero Meteomatics gating (−3.8 °C) isolates Δγ = 0.78 basal ice shear in NISAR InSAR pairs.

Live Browser NASA + STAC Explorer

The live web observatory queries cmr.earthdata.nasa.gov & Planetary Computer STAC in real time via CORS for instant citizen-science verification.

4 Verified Regions · 12 NISAR + 12 S1-RTC + Weather SeriesOrbitalSAR Reflex · Slide 6
Slide 7 / 7 · Open-Source Impact, Verification & Credits

Open, Reproducible & Tested for Spaceflight-Grade Clarity

Verification & Open Access

  • Live Web Observatory: https://orbitalsar.space/
  • Team Contact Email: info@orbitalsar.space
  • MIT Open-Source Code: github.com/pCwOrM/orbitalsar-reflex
  • Automated Unit Tests: 10/10 PASS verifying CRC-16 framing, classification thresholds & JSON dataset integrity.
  • Live Downloadable Binary: Export 24-byte .bin telemetry packets straight from browser sliders.

NASA & Global Collaborator Credits

  • NASA Earthdata CMR (NISAR L2 Provisional GCOV / GUNW)
  • NASA Alaska Satellite Facility (Sentinel-1 & UAVSAR)
  • Microsoft Planetary Computer STAC (sentinel-1-rtc)
  • Meteomatics Weather API (Global Offer Partner)
SI Disclosure: Mission patch & scaffolding AI-assisted; zero NASA logos in AI assets.OrbitalSAR Reflex · Slide 7 / 7