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  Por | Chau, J. L.; Urco, J. M.; Vierinen, J.; Harding, B. J.; Clahsen, M.; Pfeffer, N. ... (American Geophysical Union, 2021-01)

  Multistatic specular meteor radar network in Peru: system description and initial results 

  The mesosphere and lower thermosphere (MLT) region is dominated globally by dynamics at various scales: planetary waves, tides, gravity waves, and stratified turbulence. The latter two can coexist and be significant at horizontal scales less than 500 km, scales that are difficult to measure. This study ...

  Palabras claves:
  • Low latitude mesosphere
  • MLT dynamics
  • MLT horizontal divergence

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  Por | Suclupe, José; Pacheco, Edgardo E.; Condor, Percy (Institute of Electrical and Electronics Engineers, IEEE, 2020-10-20)

  Automatic identification and observations of blanketing sporadic E events in the equatorial region over Jicamarca 

  In equatorial regions, equatorial electrojet (EEJ) echoes often overlap with blanketing sporadic E (Esb) echoes. Also, Esb events could be classified as rare events over the Jicamarca Radio Observatory (JRO). For that reason, Esb identification is a big challenge for current software. Until now, the ...

  Palabras claves:
  • Blanketing sporadic E
  • Ionograms
  • Machine learning algorithms

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  Por | Aol, Sharon; Buchert, Stephan; Jurua, Edward; Milla, Marco (European Geosciences Union, 2020-10-16)

  Simultaneous ground-based and in situ Swarm observations of equatorial F-region irregularities over Jicamarca 

  Ionospheric irregularities are a common phenomenon in the low-latitude ionosphere. They can be seen in situ as depletions of plasma density, radar plasma plumes, or ionogram spread F by ionosondes. In this paper, we compared simultaneous observations of plasma plumes by the Jicamarca Unattended Long-term ...

  Palabras claves:
  • F region
  • Ground-based measurement
  • Plasma

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  Por | De la Cruz, Luis; Milla, Marco (Institute of Electrical and Electronics Engineers, 2020-10-12)

  Comparison of GB-SAR imaging algorithms for a landslide monitoring application 

  A comparative analysis of three imaging algorithms for Ground Based Synthetic Aperture Radar (GB-SAR) systems has been conducted in order to select the most appropriate algorithm to be used in a landslide monitoring application. These algorithms are Frequency Domain Back Projection (FDBP), Range ...

  Palabras claves:
  • Image reconstruction
  • Imaging
  • Monitoring

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  Por | Reyes, Pablo M.; Kudeki, Erhan; Lehmacher, Gerald A.; Chau, Jorge L.; Milla, Marco (American Geophysical Union, 2020-08)

  VIPIR and 50 MHz radar studies of gravity wave signatures in 150‐km echoes observed at Jicamarca 

  Range‐time‐intensity (RTI) plots of 50 MHz radar backscatter detected at Jicamarca from the 150‐km region of the equatorial ionosphere exhibit necklace‐shaped multilayered structures first reported by Kudeki and Fawcett (1993, https://doi.org/10.1029/93GL01256). The backscatter layers also exhibit ...

  Palabras claves:
  • Equatorial ionosphere
  • 150‐km echoes
  • Radar scattering

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  Por | Laskar, F. I.; Eastes, R. W.; Martinis, C. R.; Daniell, R. E.; Pedatella, N. M.; Burns, A. G. ... (American Geophysical Union, 2020-07)

  Early morning equatorial ionization anomaly from GOLD observations 

  During geomagnetically quiet and solar minimum conditions, spatial variations of the early morning thermosphere‐ionosphere (TI) system are expected to be mainly governed by wave dynamics. To study the postmidnight dynamical coupling, we investigated the early morning equatorial ionization anomaly (EIA) ...

  Palabras claves:
  • Airglow
  • Total electron content
  • Thermosphere‐ionosphere dynamics

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  Por | Vásquez-Ortiz, Víctor Eduardo; Milla, Marco; Verástegui, Joaquín; Romero, Oscar (Institute of Electrical and Electronics Engineers, 2019-11)

  FPGA-based GPS controlled timing system with nanosecond accuracy and leap second support 

  This paper presents the design and implementation of the GCTS (GPS Controlled Timing System), a hardware module that addresses the high precision acquisition timing necessity of the Jicamarca Radio Observatory (JRO). It extracts UTC information from a Trimble GPS receiver. With this information it ...

  Palabras claves:
  • Timing
  • Timestamp
  • Synchronization

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  Por | Li, Yanlin; Zhou, Qihou; Scott, Mark; Milla, Marco (American Geophysical Union, 2020-01)

  A study on meteor head echo using a probabilistic detection model at Jicamarca 

  A coded long pulse is applied to the Jicamarca 50 MHz high power large aperture radar to study meteor head echoes. We develop a probabilistic detection model, which finds 25% more meteors than the commonly used signal‐to‐noise threshold method. The long code and the probabilistic approach allow us to ...

  Palabras claves:
  • Meteor detection
  • Meteor science
  • Radar

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  Por | Lehmacher, Gerald A.; Wu, Haonan; Kudeki, Erhan; Reyes, Pablo M.; Hysell, David L.; Milla, Marco (American Geophysical Union, 2020-01)

  Height variation of gaps in 150‐km echoes and whole atmosphere community climate model electron densities suggest link to upper hybrid resonance 

  Radar echoes from the daytime lower F region near the magnetic equator, so-called 150-km echoes, have been puzzling researchers for decades. Neither the mechanisms that generate the enhanced backscatter at very high frequencies (typically 30–50 MHz), the sharp lower cutoff height, the intricate layering ...

  Palabras claves:
  • Equatorial ionosphere
  • Radar echoes
  • Ionosonde

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  Por | Hysell, D. L.; Milla, Marco; Kuyeng, K. (American Geophysical Union, 2019-11)

  Radio beacon and radar assessment and forecasting of equatorial F region ionospheric stability 

  Ionospheric conditions on two adjacent nights in March 2019 were observed at the Jicamarca Radio Observatory using a combination of incoherent scatter, coherent scatter, and high‐frequency (HF) radio modes. The HF data came from a network of beacons consisting of three transmitters and six receivers ...

  Palabras claves:
  • Ionosphere
  • Beacons
  • Ionospheric irregularities

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