Towards deep space optical communications

Deutsch, L. J.

doi:10.1038/s41550-020-1193-1

Cited by 15 publications

(11 citation statements)

References 1 publication

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“…Therefore, it is critical to analyze and design a reliable communication system for solar system exploration. In fact, as the exploration of solar system has intensified (Deutsch, 2020), research on the effects of solar wind turbulence on communication system has become a hotspot. Recently, research has mainly focus on the follows:…”

Section: Introductionmentioning

confidence: 99%

GMSK Demodulation Combining 1D‐CNN and Bi‐LSTM Network Over Strong Solar Wind Turbulence Channel

Zhu

Yang

et al. 2023

Radio Science

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During the deep space exploration of the solar system, the reliable communication link is vital, since it is the only way that enables the transmission of telecommand from the earth and the return of telemetry information and scientific data from the probe. However, the communication link in the solar system space environment faces many severe challenges. In addition, due to the ultralong communication distance, the communication link between the Earth and the solar system probe may encounter solar scintillation due to solar wind during near superior solar conjunction (Morabito & Hastrup, 2001). Solar scintillation is a telecommand and telemetry signal fluctuation phenomenon. When the transmitted telecommand and telemetry signals pass through the solar corona region, the solar wind causes telecommand and telemetry signal amplitude fluctuation, phase fluctuation and spectrum expansion. Especially, if the solar scintillation is sufficiently strong that means the heliocentric distance is less than four solar radii(Xu & Song, 2019), the communication link may be intermittently or even completely interrupted, which results in communication failure

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Section: Introductionmentioning

confidence: 99%

GMSK Demodulation Combining 1D‐CNN and Bi‐LSTM Network Over Strong Solar Wind Turbulence Channel

Zhu

Yang

et al. 2023

Radio Science

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“…On-going advancements in science and technology ignite our passion for exploring the vast Universe. The utilization of natural resources is also gradually developing toward deep space; thus, the exploration of unknown deep space is of great significance [1,2,3,4]. Concurrently, the free-space optical (FSO) communication terminal can be considered an ideal payload for deep-space information transfer because of its inherent benefits of small size, light weight, and low power consumption [5,6].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of the high-speed deep-space optical communication system assisted by preamplified thresholded pulse-position modulation

Gao

Xie

et al. 2022

Front. Phys.

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Deep-space free-space optical (FSO) communication utilized the light wave as carriers for information transfer which has the major benefit of small size, lightweight, and low consumption compared with microwave communication loaded with the same data rate. The M-ary pulse-position modulation (M-PPM) format is a favorable choice for deep-space FSO communication by means of its high sensitivity. The preamplified thresholded M-PPM technique has been confirmed, and a corresponding demonstration has been accomplished with data rates of 1.25 Gbps and 2.00 Gbps separately. The receiving sensitivities (BER@1 × 10−3) of 1.25 Gbps and 2.00 Gbps 16-PPM have been detected as -57.51 dBm (11.04 photons/bit) and -55.03 dBm (12.25 photons/bit), respectively. Simultaneously, the high extinction ratio of M-PPM has been achieved, for example, the extinction ratio of 16-PPM has been detected as 39.51 and 38.27 dB for 1.25 Gbps and 2.00 Gbps, which are 17.60 and 17.44 dB higher than that of on–off keying (OOK) modulation, respectively. The results imply that our communication scheme possessed high sensitivity and eliminated the requirements of single-photon detectors (SPDs) and high-speed analog-to-digital converters (ADCs) which finds an alternative solution for deep-space FSO communication.

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“…They are the best detector for applications that require great time precision and excellent weak signal detection. Highresolution light detection and ranging, photon correlations (LIDAR) [15]- [18] oxygen singlet detection [19], optical reflectometry in the time domain for telecommunication networks [20], This type of technology was also demonstrated valid in deep-space optical communication by [21], [22]. Furthermore, determining the coincidence (i.e., correlation) between them is required in the calculation of photon arrival VOLUME 99, 2022 1 time at high-resolution [23].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Bundle SNSPD Plus FPGA-Based TDC for High-Performance Time Measurements

et al. 2022

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Counting single photons and measuring their arrival time is of crucial importance for imaging and quantum applications that use single photons to outperform classical techniques. The investigation of the coincidence, i.e. correlation, between photons can be used to enhance the resolution of optical imaging techniques or to transmit information using quantum cryptography. Time measurements at the state-of-the-art are performed using Superconducting Nanowire Single Photon Detectors (SNSPDs), the lowest timing jitter single-photon detectors, connected to digital oscilloscopes or digitizers. This method is not well adapted to the ever-increasing and pressing requirement to perform measurements on a high number of channels at the same time. We focus the high-performance measure of the arrival time of photons and their correlation by means of SNSPDs and a 16-channel Time-to-Digital Converter fully implemented in Field Programmable Gate Array (FPGA). In this approach, the photons' coincidence is analyzed in real-time directly in the FPGA, resulting in a Coincidence Time Resolution (CTR) of 22.8 ps r.m.s.. For the practical benefit of the scientific community, an extended and comprehensive panorama also of comparison with the actual available strategies in this field of applications is offered through a huge number of references.INDEX TERMS Time-to-Digital Converter (TDC), Superconducting Nanowire Single Photon Detector (SNSPD), Jitter, Coincidence Time Resolution (CTR), Field Programmable Gate Array (FPGA).

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Towards deep space optical communications

Cited by 15 publications

References 1 publication

GMSK Demodulation Combining 1D‐CNN and Bi‐LSTM Network Over Strong Solar Wind Turbulence Channel

GMSK Demodulation Combining 1D‐CNN and Bi‐LSTM Network Over Strong Solar Wind Turbulence Channel

Performance evaluation of the high-speed deep-space optical communication system assisted by preamplified thresholded pulse-position modulation

Assessment of the Bundle SNSPD Plus FPGA-Based TDC for High-Performance Time Measurements

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