Advanced Ionospheric Probe scientific mission onboard FORMOSAT-5 satellite

Lin, Zai Wun; Chao, Chun-Chieh; Liu, Jann Yenq; Huang, Chung‐Hao; Chu, Yen Hsyang; Su, Ching Lun; Mao, Ya Chih; Chang, Y. S.

doi:10.3319/tao.2016.09.14.01(eof5)

Cited by 18 publications

(12 citation statements)

References 45 publications

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“…The Advanced Ionospheric Probe (AIP) on the FORMOSAT-5 satellite has a mass of 4.5 kg. (26) The Compact Ionosphere Probe (CIP) on the Ionospheric Dynamics Exploration and Attitude Subsystem Satellite (IDEASSat/INSPIRESat-2) has a power consumption of about 3.5 W. (27) Compared with previous instruments, the Langmuir probe instrument described in this paper has a lower power consumption (750 mW) and mass (about 950 g).…”

Section: S At Spamentioning

confidence: 99%

Nonlinear Micro-current Acquisition Device Applied to Onboard Langmuir Probe Instrument

Wang¹,

Zhang²,

Du³

et al. 2021

Sensors and Materials

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An onboard Langmuir probe instrument equipped with a nonlinear micro-current acquisition device has been developed and is described in this paper. Langmuir probes are commonly used sensors for ionospheric plasma diagnosis, but the plasma density varies significantly with the altitude, latitude, and day/night; therefore, the currents collected by Langmuir probes have an extensive dynamic range and tiny amplitude. We developed a novel Langmuir probe instrument with a nonlinear micro-current acquisition device that can acquire micro-current signals with high precision and has an extended dynamic range. The instrument has a low mass (about 950 g), a power consumption of about 700 mW, and meets the payload requirements of micro-nano satellites. The instrument is equipped with high-speed analog-to-digital converters (ADCs) and a third-order low-pass filter to respectively achieve submeter spatial resolution and signal-tonoise ratio (SNR) measurement of higher than 120 dB. A data inversion algorithm based on polynomial fitting is used to accurately trace back the collected current signals to achieve highprecision diagnosis of plasma in the density range from 10 8 to 10 13 m −3 . The instrument has multiprobe acquisition capability, can run in two modes, and is suitable for different detection platforms. Various experiments were carried out in the Space Plasma Simulation Chamber to evaluate the performance of the instrument. The results demonstrate that the developed Langmuir probe instrument can accurately diagnose plasma in a large density range and meet the requirements for ionospheric plasma diagnosis.

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Section: S At Spamentioning

confidence: 99%

Nonlinear Micro-current Acquisition Device Applied to Onboard Langmuir Probe Instrument

Wang¹,

Zhang²,

Du³

et al. 2021

Sensors and Materials

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“…to determine a certain plasma parameter in multiple ways; instead, the sensors are run sequentially and generate different data. For example, the FORMOSAT-5 [37] has three sensors (LP, RPA, IDM) that are run sequentially at different sampling rates to measure ionospheric plasma in a cycle mode. Also, the GOSAT-2 (greenhouse gases observing satellite-2) mission [38] has a variety of plasma sensors such as a charged particles detector, a double LP, and a magnetometer, all of them running sequentially and storing the acquired data in secure digital (SD) cards-the oldest kind of memory card, with up to 2GB memory capacity.…”

Section: Langmuir Probes (Lps)mentioning

confidence: 99%

Review of in-space plasma diagnostics for studying the Earth’s ionosphere

Velásquez–García

Izquierdo-Reyes

Kim

2022

J. Phys. D: Appl. Phys.

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This review details the state of the art in in-space plasma diagnostics for characterizing the Earth’s ionosphere. The review provides a historical perspective, focusing on the last 20 years and on eight of the most commonly used plasma sensors—most of them for in situ probing, many of them with completed/in-progress space missions: (a) Langmuir probes, (b) retarding potential analysers, (c) ion drift meters, (d) Faraday cups, (e) integrated miniaturized electrostatic analysers, (f) multipole resonance probes, (g) Fourier transform infrared spectrometers, and (h) ultraviolet absorption spectrometers. For each sensor, the review covers (a) a succinct description of its principle of operation, (b) highlights of the reported hardware flown/planned to fly in a satellite or that could be put in a CubeSat given that is miniaturized, and (c) a brief description of the space missions that have utilized such sensor and their findings. Finally, the review suggests tentative directions for future research.

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“…The onboard Advanced Ionospheric Probe (AIP) is an all‐in‐one thermal plasma sensor that plays the role of Ion Trap (IT) sensor to measure the ion concentration; the Ion Drift Meter (IDM) to measure the cross‐track drift velocities; the Retarding Potential Analyzer (RPA) to measure the ion temperature and composition; and the Planar Langmuir Probe (PLP) to measure the electron temperature in a time‐sharing way. The characteristics of AIP has been published in the literature before (Chao et al., 2020; Lin et al., 2016). In the current report only the density variations that were obtained with the 1‐s averaged data at different longitudes/latitudes are used.…”

Section: Characteristics Of the Formosat‐5 And The Onboard Advanced I...mentioning

confidence: 99%

A Study of Magnetic Conjugate Property in a Large Density Irregularity Structure Using Hilbert‐Huang Transform

Chao

Sun

et al. 2021

JGR Space Physics

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A large density irregularity structure in latitudinal extent was observed by the sun‐synchronous orbiting FORMOSAT‐5 satellite at 720 km topside ionosphere in the South American sector on November 24, 2018 during a magnetically quiet time. The observed density irregularity structure has a latitudinal extent of ∼30° across the dip equator, and a longitudinal width of ∼6°. Unlike previously studied equatorial plasma bubble structures with the airglow images that indicate hemispheric magnetic conjugate similarity, the gross feature of this large density irregularity structure indicates a north‐south hemispheric asymmetry in density variation. We use the Hilbert‐Huang Transform analysis to study the irregularity structure in different scales of density variations. It is found that the amplitude of density variations in the scale sizes from 22.5 to 450 km all indicate the hemispheric asymmetry. However, the spectral property of density variations in the two hemispheres is almost identical to each other. This implies that the density irregularity structure which originates from the same Rayleigh‐Taylor (RT) instability process has preserved the spectral characteristics inside the magnetic flux tube. Therefore, the cause that fails to preserve the magnetic conjugate property in the density irregularity structure comes from the fact that the background ionospheric density distribution has a north‐south hemispherical asymmetry in the beginning of the RT instability process. This hemispheric asymmetrical density distribution is caused by the seasonal variation of density distributions in the two hemispheres and the prevailing inter‐hemispheric neutral wind during solstices in the South American sector.

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Advanced Ionospheric Probe scientific mission onboard FORMOSAT-5 satellite

Cited by 18 publications

References 45 publications

Nonlinear Micro-current Acquisition Device Applied to Onboard Langmuir Probe Instrument

Nonlinear Micro-current Acquisition Device Applied to Onboard Langmuir Probe Instrument

Review of in-space plasma diagnostics for studying the Earth’s ionosphere

A Study of Magnetic Conjugate Property in a Large Density Irregularity Structure Using Hilbert‐Huang Transform

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