Design of a Highly Integrated and Reliable SDR Platform for Multiple RF Applications on Spacecrafts

Budroweit, Jan

doi:10.1109/glocom.2017.8255087

Cited by 20 publications

(6 citation statements)

References 4 publications

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“…The down‐converted signals are then used for further data processing. The same IF signals are used for the downlink measurement via a signal analyzer (SA) and a customized software‐defined radio (SDR) . The SA is configured to zero span at 70 MHz with the highest possible resolution (1‐ms span, 1001 points).…”

Section: In‐orbit Measurement and Data Interpretationmentioning

confidence: 99%

Dynamic link analysis and its in‐orbit verification on a spin‐stabilized satellite mission Eu:CROPIS

Drobczyk

Budroweit

2020

Satell Commun Network

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In this paper, we present the in-orbit verification of a dynamic link budget approach for the communication link of the Eu:CROPIS (Euglena and Combined Regenerative Organic-Food Production in Space) satellite. Because of the high satellite spin rates of up to 30 rpm, the satellite antennas radio frequency beam becomes strongly dynamic, consisting of fast amplitude variations and phase rotations. Both effects degrade the link quality and might lead to an abort of the communication. The paper presents an accurate method of how to simulate these dynamic effects and examines the simulation outputs with real in-orbit measurements. Both results are compared with each other, and deviations are discussed. K E Y W O R D S analysis and verification, communication link emulation, dynamic link budget, in-orbit verification, spinning satellite 1 | INTRODUCTION This paper presents the in-orbit verification of a dynamic link budget approach for the satellite mission Eu:CROPIS (Euglena and CombinedRegenerative Organic-Food Production in Space) and is an extension of the work presented in recent publications. 1,2 Eu:CROPIS is a spinstabilized satellite, which simulates the gravitational fields of the Moon and Mars for biological on-board experiments. 3 For this reason, one key driver of the Eu:CROPIS satellite is the attitude profile to emulate the required gravity forces. This is achieved via spin-stabilization around the zaxis and a maximum rotation of up to 30 rpm. The z-axis is sun-pointing, sun-synchronous orbit. Moreover, a challenging issue with respect to the communication link is the sun pointing of the spacecraft, which does not allow pointing the antennas towards Earth during ground station contacts. This involves attitude-independent and omnidirectional antenna coverage for the communication link. Both of these aspects lead to fastchanging link conditions during communication, inducing amplitude variations and phase rotations depending on the selected antenna type and its position on the spacecraft structure. Thus, a more detailed analysis is required to reproduce and analyze these effects on the spacecraft and ground station electronics, compared with a state-of-the-art static link budget analysis in accordance with the previous study. 4 The theory for the static link budget calculation can be derived from other studies. 5,6 The mathematical background for the rotational effects was already well described in previous works, 7-9 but it has not been fully simulated and verified in-orbit for a real satellite mission in low earth orbit. Our previous works 1,2 included the characterization of the antenna far-field pattern focusing on the interactions with the satellite structure. Those results are extracted to a mission orbit simulation tool and the end-to-end tests on-ground, with respect to the dynamic link variation, mainly induced by the fast rotation of the antennas and their influence to the functionality of the affected electronics. The effects can have direct impact on the binary phase-shift keying demodulation, a...

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Section: In‐orbit Measurement and Data Interpretationmentioning

confidence: 99%

Dynamic link analysis and its in‐orbit verification on a spin‐stabilized satellite mission Eu:CROPIS

Drobczyk

Budroweit

2020

Satell Commun Network

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“…The Institute of Space System of the German Aerospace Center (DLR) is recently developing a highly integrated multi-band software-defined radio (SDR) platform for space applications with a radiation-tolerant approach [1,2]. State-of-the-art SDR systems in space avionics are typically limited to the re-configuration of the signal processing algorithms in the digital domain.…”

Section: Introductionmentioning

confidence: 99%

Heavy Ion Induced Single Event Effects Characterization on an RF-Agile Transceiver for Flexible Multi-Band Radio Systems in NewSpace Avionics

et al. 2020

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Nowadays, technologies have a massive impact on the design of avionic systems, even for the conservative space industry. In this paper, the single event effect (SEE) characterization of a highly integrated and radio frequency (RF) agile transceiver is being presented which is an outstanding candidate for future radio systems in NewSpace applications and space avionics. The device being investigated allows programmable re-configuration of RF specifications, where classical software-defined radios (SDR) only define an on-demand re-configuration of the signal processing. RF related configurations are untouched for common SDR and developed discretely by the specific application requirements. Due to the high integrity and complexity of the device under test (DUT), state-of-the-art radiation test procedures are not applicable and customized testing procedures need to be developed. The DUT shows a very robust response to linear energy transfer (LET) values up to 62.5 MeV.cm 2 /mg, without any destructives events and a moderate soft error rate.

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“…The German Aerospace Center (DLR), Institute of Space System, is currently working on the development of a highly integrated multi-band software-defined radio (SDR) platform for space application [1,2]. Compared to state-of-the-art SDR systems, the design shall allow the reconfiguration of relevant radio frequency (RF) parameters, such as the RF bandwidth, mixing frequency or the sample rate for analog to digital conversion (and vice versa).…”

Section: Introductionmentioning

confidence: 99%

Proton Induced Single Event Effect Characterization on a Highly Integrated RF-Transceiver

2019

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Radio frequency (RF) systems in space applications are usually designed for a single task and its requirements. Flexibility is mostly limited to software-defined adaption of the signal processing in digital signal processors (DSP) or field-programmable gate arrays (FPGA). RF specifications, such as frequency band selection or RF filter bandwidth are thereby restricted to the specific application requirements. New radio frequency integrated circuit (RFIC) devices also allow the software-based reconfiguration of various RF specifications. A transfer of this RFIC technology to space systems would have a massive impact to future radio systems for space applications. The benefit of this RFIC technology allows a selection of different RF radio applications, independent of their RF parameters, to be executed on a single unit and, thus, reduces the size and weight of the whole system. Since most RF application sin space system require a high level of reliability and the RFIC is not designed for the harsh environment in space, a characterization under these special environmental conditions is mandatory. In this paper, we present the single event effect (SEE) characterization of a selected RFIC device under proton irradiation. The RFIC being tested is immune to proton induced single event latch-up and other destructive events and shows a very low response to single failure interrupts. Thus, the device is defined as a good candidate for future, highly integrated radio system in space applications.

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Design of a Highly Integrated and Reliable SDR Platform for Multiple RF Applications on Spacecrafts

Cited by 20 publications

References 4 publications

Dynamic link analysis and its in‐orbit verification on a spin‐stabilized satellite mission Eu:CROPIS

Dynamic link analysis and its in‐orbit verification on a spin‐stabilized satellite mission Eu:CROPIS

Heavy Ion Induced Single Event Effects Characterization on an RF-Agile Transceiver for Flexible Multi-Band Radio Systems in NewSpace Avionics

Proton Induced Single Event Effect Characterization on a Highly Integrated RF-Transceiver

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