Thermo-Mechanical Design and Validation of Spaceborne High-Speed Digital Receiver Unit for Synthetic Aperture Radar Application

Kang, Sang Wook; Park, Sung Woo; Choi, Hye-Yoon; Ryu, Gu-Hyun; Kim, Jong-Pil; Jung, Sung-Hoon; Kim, Seyoung; Lee, Hyon-Ik; Oh, Hyun-Ung

doi:10.3390/aerospace8100305

Cited by 3 publications

(2 citation statements)

References 5 publications

(7 reference statements)

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“…Since these FPGAs are commercially available, implementation on FPGAs is much less expensive than implementation on application specific integrated circuits (ASICs). All the EEE-parts and materials used in DRX are space qualified, and through a space qualification test campaign, it is confirmed that all functions and performance of DRX are satisfied with the requirements under conditions considering the space environment [14]. In our SAR mode design, MDFT-BSF is used for highresolution modes; for the other modes such as standard modes and wide-swath modes, the decimation filter is used and MDFT-BSF is bypassed.…”

Section: Hardware Implementationmentioning

confidence: 76%

“…In addition, we developed a spaceborne SAR digital receiver to show that MDFT-BSF can be implemented and operated on commercial spacegrade FPGAs. We used space-qualified EEE-parts and materials to manufacture the SAR digital receiver and completed the space qualification test campaign to confirm that it satisfies the function and performance requirements in space environment conditions [14].…”

Section: Introductionmentioning

confidence: 99%

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A Digital Filter Bank Based Method for Data Reduction in Spaceborne SAR Electronics

Lee

Kim

et al. 2022

IEEE Access

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On-board data reduction is a major concern in designing of a spaceborne synthetic aperture radar (SAR) system since the volume of acquired SAR data is generally much higher than the downlink capability to the ground-station. The dechirp-on-receive (DoR) method is considered the state-of-the-art SAR data reduction technique. If there is deramping hardware in the SAR instrument, DoR is an effective method to reduce the volume of images for high resolution modes. In this paper, we use a digital signal processing method which applies a modified discrete Fourier transform (MDFT) filter bank for SAR data reduction. We call this method MDFT band selection filter (MDFT-BSF). This paper presents a quantitative analysis of the MDFT-BSF on data reduction performance. In addition, we provide a relationship between the data reduction performance and the number of sub-bands (M), and show that there is an optimal value of M that minimizes the volume of on-board SAR data. An evaluation of MDFT-BSF including a comparison with the DoR method presents that MDFT-BSF has an advantage for SAR data reduction. We show that MDFT-BSF can be implemented and operated on commercial space-grade FPGAs by the development of a spaceborne SAR digital receiver.INDEX TERMS dechirp-on-receive, field programmable gate array, modified discrete Fourier transform filter bank, satellite electronics, synthetic aperture radar

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Section: Hardware Implementationmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

A Digital Filter Bank Based Method for Data Reduction in Spaceborne SAR Electronics

Lee

Kim

et al. 2022

IEEE Access

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Design of A High Efficiency S-band Transceiver Module for Spaceborne Phased-array Antenna

Duan

Qiao

et al. 2022

2022 3rd China International SAR Symposium (CISS)

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Experimental Evaluation of the Effectiveness of the Printed Circuit Board Strain-Based Methodology in Space-Borne Electronics with Vertically Mounted Printed Circuit Boards

Kim,

Park,

Park

et al. 2024

Aerospace

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The Oh-Park methodology was proposed to overcome the limitations of Steinberg’s theory for evaluating the structural safety of space-borne electronics and has been experimentally verified at the printed circuit board (PCB) specimen level for various types of electronic packages, such as ball grid arrays (BGAs), column grid arrays (CGAs), and small-outline packages (SOPs). However, it is necessary to validate the design methodology because the PCB mounted on the housing is affected by the elastic mode of the mechanical housing. In addition, although the validity of the existing theory based on critical strain has been verified for horizontally mounted structures, there are cases where PCBs are mounted vertically. Therefore, it is essential to consider the dynamic influence of the boundary conditions of mounted electronics. In this study, electronics specimens with corresponding boundary conditions were fabricated, and a fatigue-life test was performed. In addition, a structural analysis using Steinberg’s theory and the Oh-Park methodology was performed, and the results were compared with those of the fatigue-life test. The results showed that the analysis using the Oh-Park methodology accurately represented the test results, and the validity of the Oh-Park methodology for vertical electronics was verified experimentally.

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Thermo-Mechanical Design and Validation of Spaceborne High-Speed Digital Receiver Unit for Synthetic Aperture Radar Application

Cited by 3 publications

References 5 publications

A Digital Filter Bank Based Method for Data Reduction in Spaceborne SAR Electronics

A Digital Filter Bank Based Method for Data Reduction in Spaceborne SAR Electronics

Design of A High Efficiency S-band Transceiver Module for Spaceborne Phased-array Antenna

Experimental Evaluation of the Effectiveness of the Printed Circuit Board Strain-Based Methodology in Space-Borne Electronics with Vertically Mounted Printed Circuit Boards

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