Comparison of the Sentinel-1B Synthetic Aperture Radar With Airborne Microwave Sensors in an Extra-Tropical Cyclone

Sapp, Joseph; Mouche, Alexis; Jelenak, Zorana; Chang, Paul; Frasier, Stephen J.

doi:10.1109/tgrs.2020.2966332

Cited by 2 publications

(1 citation statement)

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“…Airborne radar has a high data rate that can reach hundreds of Mbps or even Gbps in many applications [1][2][3][4], which is much higher than the current air-to-ground data transfer rate, so an onboard data storage system is often required by the airborne radar [5,6]. With the advantages of high storage density, strong vibration resistance, low power consumption, fast storage speed, © 2021 The Authors.…”

Section: Introductionmentioning

confidence: 99%

Study on the file management method of data storage system for airborne radar

Tian

Nie

et al. 2021

R. Soc. open sci.

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In order to solve the problem that the air-to-ground data transfer rate is much lower than the radar data rate, the onboard system is commonly used for storing the airborne radar data. However, there are two main problems in the data storage using the traditional file management method. The first is that the frequent data updating of the file allocation table (FAT) and the file directory table (FDT) cause a high frequency of address jumps among the discontinuous areas, which leads to a long response time. The second is that the updating frequencies of the FAT, the FDT and the data region are seriously inconsistent, which results in uneven wear of the three areas. To solve these two problems, a file management method, which optimizes the data writing in the three areas of the FAT, the FDT and the data region, is proposed in this study. An actual measurement is carried out on a data storage system of the airborne radar using the proposed file management method. The result shows that the proposed method significantly reduces the updating frequency of FAT and FDT, and achieves the wear levelling of file area and data region.

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