Taranis MCP: a joint instrument for accurate monitoring of transient luminous event in the upper atmosphere

Blanc, E.; Farges, Thomas; Jehl, A.; Binet, Renaud; Hébert, Philippe; Mer-Dachard, Fanny Le; Ravel, Karen; Sato, Mitsuteru

doi:10.1117/12.2309048

Cited by 3 publications

(3 citation statements)

References 38 publications

(39 reference statements)

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“…The image subtraction procedure is first proposed by Blanc et al []. More recently, Blanc et al [] first suggested the subtraction of images to detect TLEs in nadir images taken by two cameras having a similar configuration. We use basically the same image subtraction procedure.…”

Section: Methodology Of Data Processingmentioning

confidence: 99%

Horizontal distributions of sprites derived from the JEM‐GLIMS nadir observations

Sato

Mihara

Adachi³

et al. 2016

JGR Atmospheres

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Global Lightning and Sprite Measurements on Japanese Experiment Module (JEM-GLIMS) started the nadir observations of lightning discharges and transient luminous events (TLEs) from the International Space Station (ISS) since November 2012. In the nadir observations, JEM-GLIMS optical instruments have to simultaneously detect incomparably intense lightning emissions and weak TLE emissions. To distinguish TLEs, especially sprite events, from lightning events, combined data analytical methods are adopted: (1) a subtraction of the wideband camera image from the narrowband camera image, (2) a calculation of the intensity ratio between different photometer channels, and (3) an estimation of the polarization and charge moment changes for the TLE-producing lightning discharges. We succeeded in identifying numbers of sprite events using the combined analytical methods, and here we report three sprite events detected by JEM-GLIMS as a case study. In the subtracted images, sprite emissions are located over the area of the sprite-producing lightning emissions. However, these sprites and sprite-producing lightning discharges did not occur at the nadir point of the ISS. For this reason, the geometry conversion of the sprite and sprite-producing lightning emissions as observed from the point just over the sprite-producing lightning discharges is performed. In the geometry-converted images, the locations of the sprite emissions are clearly displaced by 8-20km from the peak positions of the sprite-producing lightning emissions. Thus, the first quantitative spatial distributions of sprites and sprite-producing lightning discharges from the JEM-GLIMS nadir observations are revealed

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Section: Methodology Of Data Processingmentioning

confidence: 99%

Horizontal distributions of sprites derived from the JEM‐GLIMS nadir observations

Sato

Mihara

Adachi³

et al. 2016

JGR Atmospheres

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“…Since the Summer of 2017, the software FreeTure contains an experimental realtime algorithm for the detection of TLEs. This algorithm runs along with the meteor detection part on selected stations with a view to help localize TLEs observed by the future CNES space mission TARANIS (Blanc et al 2017). The FRIPON network infrastructure can also be used to conduct large-scale light pollution monitoring campaigns using the all-sky calibration images collected over time (Jechow et al 2018).…”

Section: Other Recordsmentioning

confidence: 99%

FRIPON: a worldwide network to track incoming meteoroids

Colas

Zanda

Bouley

et al. 2020

A&A

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Context. Until recently, camera networks designed for monitoring fireballs worldwide were not fully automated, implying that in case of a meteorite fall, the recovery campaign was rarely immediate. This was an important limiting factor as the most fragile – hence precious – meteorites must be recovered rapidly to avoid their alteration. Aims. The Fireball Recovery and InterPlanetary Observation Network (FRIPON) scientific project was designed to overcome this limitation. This network comprises a fully automated camera and radio network deployed over a significant fraction of western Europe and a small fraction of Canada. As of today, it consists of 150 cameras and 25 European radio receivers and covers an area of about 1.5 × 106 km2. Methods. The FRIPON network, fully operational since 2018, has been monitoring meteoroid entries since 2016, thereby allowing the characterization of their dynamical and physical properties. In addition, the level of automation of the network makes it possible to trigger a meteorite recovery campaign only a few hours after it reaches the surface of the Earth. Recovery campaigns are only organized for meteorites with final masses estimated of at least 500 g, which is about one event per year in France. No recovery campaign is organized in the case of smaller final masses on the order of 50 to 100 g, which happens about three times a year; instead, the information is delivered to the local media so that it can reach the inhabitants living in the vicinity of the fall. Results. Nearly 4000 meteoroids have been detected so far and characterized by FRIPON. The distribution of their orbits appears to be bimodal, with a cometary population and a main belt population. Sporadic meteors amount to about 55% of all meteors. A first estimate of the absolute meteoroid flux (mag < –5; meteoroid size ≥~1 cm) amounts to 1250/yr/106 km2. This value is compatible with previous estimates. Finally, the first meteorite was recovered in Italy (Cavezzo, January 2020) thanks to the PRISMA network, a component of the FRIPON science project.

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“…For this reason, a subtraction of the appropriately scaled LSI-1 image from the LSI-2 image is required to extract only the TLE emissions (Sato et al 2015). The image subtraction acquired by two cameras having a similar configuration was first proposed by Blanc et al (2004Blanc et al ( , 2012. We basically used the same subtraction scheme.…”

Section: Image Subtraction Methods For Lsi Datamentioning

confidence: 99%

Sprites identification and their spatial distributions in JEM-GLIMS nadir observations

Sato

Adachi²,

Ushio

et al. 2017

Terr. Atmos. Ocean. Sci.

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The Global Lightning and Sprite Measurements on the Japanese Experiment Module (JEM-GLIMS) started continuous nadir observations of lightning and transient luminous events (TLEs) at the International Space Station (ISS) in November 2012 and completed the observations in August 2015. As JEM-GLIMS uses the nadir observation technique, the JEM-GLIMS optical instruments simultaneously measure both incomparably intense lightning emissions and weak sprite emissions. We adopted combined data analytical methods to distinguish between these two types of emissions: (1) a subtraction of the wideband LSI-1 image from the narrowband LSI-2 image, (2) a calculation of the intensity ratio between different photometer channels, and (3) an estimation of the charge moment change (CMC) of the suspected sprite-producing CG discharge. This report presents as a case study one sprite event detected at 19:50:40.30580 UT on 28 September 2013 and identified using the above analytical methods. From the results derived from detailed data analyses, we judged that the optical emission measured by LSI-2 is a sprite emission. We carried out the geometry conversion toward the LSI-1 and subtracted images and found that the sprite emission location shifts by 3.5 km from the peak lightning emission location, which agree with the previous reports. The detailed horizontal distributions of sprites and the relationship between the sprite location and the parent lightning location are quantitatively revealed for the first time.

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Taranis MCP: a joint instrument for accurate monitoring of transient luminous event in the upper atmosphere

Cited by 3 publications

References 38 publications

Horizontal distributions of sprites derived from the JEM‐GLIMS nadir observations

Horizontal distributions of sprites derived from the JEM‐GLIMS nadir observations

FRIPON: a worldwide network to track incoming meteoroids

Sprites identification and their spatial distributions in JEM-GLIMS nadir observations

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