Articles | Volume 16, issue 12
https://doi.org/10.5194/amt-16-3283-2023
https://doi.org/10.5194/amt-16-3283-2023
Research article
 | 
29 Jun 2023
Research article |  | 29 Jun 2023

In-orbit cross-calibration of millimeter conically scanning spaceborne radars

Alessandro Battaglia, Filippo Emilio Scarsi, Kamil Mroz, and Anthony Illingworth

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This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
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Cited articles

Battaglia, A., Wolde, M., D'Adderio, L. P., Nguyen, C., Fois, F., Illingworth, A., and Midthassel, R.: Characterization of Surface Radar Cross Sections at W-Band at Moderate Incidence Angles, IEEE T. Geosci. Remote, 55, 3846–3859, https://doi.org/10.1109/TGRS.2017.2682423, 2017. a, b
Bate, R. R., Mueller, D. D.,, White, J. E.: Fundamentals of Astrodynamics, Dover Publications, New York, USA, ISBN 0486600610, 1971. a
Battaglia, A., Dhillon, R., and Illingworth, A.: Doppler W-band polarization diversity space-borne radar simulator for wind studies, Atmos. Meas. Tech., 11, 5965–5979, https://doi.org/10.5194/amt-11-5965-2018, 2018. a
Battaglia, A., Kollias, P., Dhillon, R., Roy, R., Tanelli, S., Lamer, K., Grecu, M., Lebsock, M., Watters, D., Mroz, K., Heymsfield, G., Li, L., and Furukawa, K.: Spaceborne Cloud and Precipitation Radars: Status, Challenges, and Ways Forward, Rev. Geophys., 58, e2019RG000686, https://doi.org/10.1029/2019RG000686, 2020. a
Battaglia, A., Martire, P., Caubet, E., Phalippou, L., Stesina, F., Kollias, P., and Illingworth, A.: Observation error analysis for the WInd VElocity Radar Nephoscope W-band Doppler conically scanning spaceborne radar via end-to-end simulations, Atmos. Meas. Tech., 15, 3011–3030, https://doi.org/10.5194/amt-15-3011-2022, 2022. a
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Short summary
Some of the new generation of cloud and precipitation spaceborne radars will adopt conical scanning. This will make some of the standard calibration techniques impractical. This work presents a methodology to cross-calibrate radars in orbits by matching the reflectivity probability density function of ice clouds observed by the to-be-calibrated and by the reference radar in quasi-coincident locations. Results show that cross-calibration within 1 dB (26 %) is feasible.