Calibration/validation of spaceborne microwave scatterometer on HY-2A

Lv, Ailing; Wang, Xiaoning; Jin, Axin; Liu, Lixia

doi:10.1109/igarss.2014.6946517

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…Evaluation for radiometric accuracy is done based on the internal calibration (Ailing et al 2014) accuracy; for that, we used the in-orbit internal calibration observation data. Internal calibration accuracy was estimated with the internal calibration signal accuracy, the insertion loss measurement error of the radar front end, the coupling measurement error of the internal calibration loop, etc.…”

Section: E150mentioning

confidence: 99%

The On-Orbit Performance of FY-3E in an Early Morning Orbit

Zhang,

Hu,

Sun

et al. 2024

Bulletin of the American Meteorological Society

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The polar-orbiting meteorological satellites operating in an observing system composed of early morning (EM), mid-morning (AM), and afternoon (PM) orbits are extremely important to global Numerical Weather Prediction (NWP). Following the proposal of World Meteorological Organization (WMO), China Meteorological Administration (CMA) launched Fengyun 3E (FY-3E), the world’s first EM-orbit meteorological satellite for civil use, on 5 July 2021. With 11 scientific instruments onboard, FY-3E is capable of providing atmospheric sounding, low light imaging, sea surface wind detection, and space weather monitoring. Six months after launch, we have finished the post-launch test for all the payloads. This paper presents the FY-3E data obtained during the 6-month test period, their performance, and key geophysical products driven ready for downstream applications. Experiments have been conducted to better disseminate the sounding data within the 6-hour NWP assimilation window. Further efforts have been made to benefit data application for severe weather monitoring, diurnal cycle of earth data, quasi-continuous sun monitoring for space weather, and climate research.

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Section: E150mentioning

confidence: 99%

The On-Orbit Performance of FY-3E in an Early Morning Orbit

Zhang,

Hu,

Sun

et al. 2024

Bulletin of the American Meteorological Society

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“…Instead, the signal is looped back to the receiving channel through the front end. Through this procedure, the phased array scatterometer can perform real-time correction for gain fluctuations during actual observations, thereby ensuring the precision of backscatter coefficient measurements [25].…”

Section: System Calibration and Amplitude And Phase Correction 41 Sys...mentioning

confidence: 99%

Analysis of Onboard Verification Flight Test for the Salinity Satellite Scatterometer

Liu,

Wang,

Yun

et al. 2023

Sensors

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The upcoming Salinity Satellite, scheduled for launch in 2024, will feature the world’s first phased array radar scatterometer. To validate its capability in measuring ocean surface backscatter coefficients, this paper conducts an in-depth analysis of the onboard verification flight test for the Salinity Satellite scatterometer. This paper provides a detailed introduction to the system design of the Salinity Satellite scatterometer, which utilizes phased array radar technology and digital beamforming techniques to achieve accurate measurements of sea surface scattering characteristics. The paper elaborates on the derivation of backscatter coefficients, system calibration, and phase amplitude correction for the phased array scatterometer. Furthermore, it describes the process of the onboard calibration flight test. By analyzing internal noise signals, onboard calibration signals, and external noise signals, the stability and reliability of the scatterometer system are validated. The experiment covers both land and ocean observations, with a particular focus on complex sea surface conditions in nearshore areas. Through the precise analysis of backscatter coefficients, the paper successfully distinguishes the different backscatter coefficient characteristics between ocean and land. The research results effectively demonstrate the feasibility of the Salinity Satellite scatterometer for measuring backscatter coefficients in a phased array configuration, as well as its outstanding performance in complex marine environments.

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