Software defined radio for small satellites

Grayver, Eugene; Chin, Andrew; Hsu, Jason C.; Stanev, Stanislav; Kun, David; Parower, Adam

doi:10.1109/aero.2015.7118901

Cited by 13 publications

(12 citation statements)

References 4 publications

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“…With the use of such high frequency bands, data rates were able to reach 100 kbps to 1 Mbps [5]. Higher data rates require utilization of higher frequency bands like Ku (12-18 GHz), K (18-27 GHz), and Ka-band (27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40) [4]. These bands are still emerging technologies for small satellites due to the types of antennas needed and the power requirements [5].…”

Section: Challenges Of Designing Cubesats' Communication Systemsmentioning

confidence: 99%

“…There are several AeroCubes that have been launched, are currently in orbit, or are being developed. The design reviewed here is for AeroCube 915 MHz SDR communication system based on a Zynq processor [38][39][40]. It was found from previous AeroCube missions that as the CubeSat travels in its orbit, the SNR can change by more than 20 dB [38].…”

Section: A Custom Designed Sdrsmentioning

confidence: 99%

“…The design reviewed here is for AeroCube 915 MHz SDR communication system based on a Zynq processor [38][39][40]. It was found from previous AeroCube missions that as the CubeSat travels in its orbit, the SNR can change by more than 20 dB [38]. Consequently, adaptive coding and modulation (ACM) is employed in this system to track the link SNR value and optimize the data rate accordingly by changing the modulation and coding schemes used.…”

Section: A Custom Designed Sdrsmentioning

confidence: 99%

“…Consequently, adaptive coding and modulation (ACM) is employed in this system to track the link SNR value and optimize the data rate accordingly by changing the modulation and coding schemes used. The modulation schemes used in this design are BPSK and QPSK [38]. While root raised cosine is used for pulse shaping and Turbo (cdma2000) codec.…”

Section: A Custom Designed Sdrsmentioning

confidence: 99%

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A Critical Review of Baseband Architectures for CubeSats’ Communication Systems

Zeedan¹,

Khattab²

2022

Preprint

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This survey 1 fills in an important gap in the literature on CubeSat communication systems’ designs and architectures. The paper 2 comprehensively reviews the design details in-depth and 3 critically evaluates the performance and reliability of the reviewed systems by analyzing the demonstration and testing results and illustrating implicit assumptions in the reviewed works. Furthermore, the paper 4 proposes an original CubeSat communication system categorization based on the design approach and 5 analyzes the features and limitations of each category. Consequently, this leads to identifying the limitations of current CubeSat communication systems and the promising future developments that can boost CubeSat communications capabilities.

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Section: Challenges Of Designing Cubesats' Communication Systemsmentioning

confidence: 99%

Section: A Custom Designed Sdrsmentioning

confidence: 99%

Section: A Custom Designed Sdrsmentioning

confidence: 99%

Section: A Custom Designed Sdrsmentioning

confidence: 99%

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A Critical Review of Baseband Architectures for CubeSats’ Communication Systems

Zeedan¹,

Khattab²

2022

Preprint

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“…In order to overcome the variable free space loss, the minimum receiving antenna elevation angle is used in the link budget analysis to have a fixed transmit power for all passes condition [5]. The fixed transmission technique is not an optimise solutions and create large margin condition especially when the satellite passes at high elevation angle [6]. Having a large margin in a CubeSat communication link means transmitter wastes higher power consumption, and the signal-to-noise ratio is not optimised.…”

Section: Introductionmentioning

confidence: 99%

Design and Validation of an Adaptive Cubesat Transmitter System using a Thermal Vacuum Chamber (TVAC)

Jaswar¹,

Rahman²,

Ahmad³

2019

IJRTE

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CubeSat in a low earth orbit primarily uses a UHF transmitter with a fixed RF output power. In this paper, the design of the CubeSat transmitter with adaptive power control ability is presented. The design drive is to optimise the SNR and overcome the variability of the propagation path length due to different ground station elevation angles by adjusting its transmitting power. The TVAC test is conducted to validate the performance of the adaptive function in the transmitter. The TVAC is used to emulate the satellite condition in an outer space environment. Four thermal cycles starting from +60°C to -20°C with less than 10-5Pa pressure condition are employed, which was conducted at the KIT CeNT, Japan. The transmitter was integrated inside the satellite structure as a complete CubeSat system. The output power of the transmitter is tested from 0.5W to 2W based on the proposed satellite adaptive mode. The frequency stability of the transmitter is monitored and complies with an average of 70% below requirement, which is less than 2ppm. The results indicate that the RF output power is adjustable to operate as the proposed CubeSat adaptive transmitter in a thermal vacuum condition, which was first developed in Malaysia.

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