Credit: Me :D

High-altitude radar meteors detected using a new analysis algorithm for interferometric meteor head echoes


Daniel Kastinen & Johan Kero

Credit: Me :D

Who am I?

Staff scientist in "Solar Terrestrial and Atmospheric Research" Programme

My topic: meteors and space objects!

Meteors and space objects

Making of a meteor

Radar meteor head echoes

Construct a new pipeline

    Main tasks

  • Data → Model fits with realistic uncertainties
    (probability)
    +calibration
    +validation
    +simulation
  • ...

One of the motivations

    Reliably investigate

  • Individual events
  • Anomalous events
  • Rare sub-populations

Radar system

Applied the new analysis on

Shigaraki Middle and Upper Atmosphere (MU) radar, Japan

New pipeline

Kastinen D, Kero J (2022)

Radar analysis algorithm for determining meteor head echo parameter probability distributions.

If you want to know more details:
find me during the conference!

New pipeline

model parameter estimation

Bayes' theorem

$$ P(\text{model} | \text{data}) = \frac{P(\text{data} | \text{model}) P(\text{model})}{P(\text{data})} $$

Results

new analysis

Results

new analysis

Results

new analysis

Credit: Wikimedia Commons (Seahen)

Results

new analysis

Credit: Wikimedia Commons (Lasunncty)

Results

high-altitude detections

Results

high-altitude detections

516 out of 106,000 events

Results

high-altitude detections

Results

high-altitude detections

Results

high-altitude detections

  • 305 / 106,000 events
    (~0.3%)
  • 74 > 130 km
  • 4 > 145 km

Thank you for your attention

"manual correction"

Future work

EISCAT 3D

Photo: EISCAT

Future work

EISCAT 3D

Photo: EISCAT