The Struggle for Ka-band: NASA's Gradual Move Towards Using 32-GHz Ka-band for Deep Space Missions

Shambayati, S.

doi:10.1109/aero.2007.352894

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…However, compared with the L/S/X band, data transmission over the Ka-band channel is highly vulnerable to weather impairments. For each decibel of loss due to weather impairments at the X band, the Ka-band system would suffer approximately 4 dB of loss [2][3][4]. Therefore, reliable delivery of scientific data over a space Ka-band downlink is heavily dependent on the dynamic characteristics of Earth's weather, other than extremely long propagation delay on the order of minutes or hours and huge path loss.…”

Section: Introductionmentioning

confidence: 99%

CFDP-based two-hop relaying protocol over weather-dependent Ka-band space channel

Yang

Jiao

et al. 2015

IEEE Trans. Aerosp. Electron. Syst.

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In this paper, we propose a novel relaying protocol based on the Consultative Committee for Space Data Systems File Delivery Protocol (CFDP) over a weather-dependent Ka-band channel, which exploits a dual-hop link instead of the traditional single-hop link for a 100% file delivery service on scientific data return. We designed the specific model of the proposed protocol and provide the analytical results on the expected latency and link efficiency of the file delivery. Based on the proposed model, we discuss the exact location of the relay node that could minimize the expected file delivery delay by examining several practical relay locations for the proposed protocol. The simulation results show that, compared with the traditional CFDP, the proposed file delivery protocol could effectively reduce the total file delivery time by several orders of astronomical units and enhance link efficiency with noticeable increments, especially under conditions of high bit error rates (above 10 −5 ).

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Section: Introductionmentioning

confidence: 99%

CFDP-based two-hop relaying protocol over weather-dependent Ka-band space channel

Yang

Jiao

et al. 2015

IEEE Trans. Aerosp. Electron. Syst.

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“…The third-category photonic channelization requires no optical filters, so it can reach the maximum suppression ratio of spurs in each sub-channel. For different scenarios, microwave signals are required to have different bands such as the S-band, C band, and K band [34][35][36][37]. Therefore, a microwave signal receiver working at many microwave bands is demanded.…”

Section: Introductionmentioning

confidence: 99%

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

et al. 2020

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Due to the limitation of analog-to-digital/digital-to-analog converters, photonics-assisted channelized receivers are thought to be a promising approach to receiving wideband microwave signals. Herein, based on the spectrum analysis and the coherent channelization, we develop a photonics-assisted channelized receiver for multi-band microwave signals. In the proposed channelized receiver, the instantaneous spectral analysis is introduced to determine the frequencies and bandwidth of a dynamic wideband signal. The dynamic wideband signal is then received by a multi-band coherent channelizer. By exploiting transparency of the optoelectronic devices, we equivalently build a multi-band coherent channelizer that can work for dynamic microwave signals, where a few optoelectronic devices are required. Compared with the existing coherent channelizers, the operative bandwidth of the proposed multi-band coherent channelizer is much larger (up to 28 GHz). The proposed photonics-assisted channelized receiver doesn't need tunable optical comb generators and radio frequency sources, and it also doesn't require knowing the spectrum information in advance. Moreover, the designed example of the proposed photonics-assisted channelized receiver for a 4 GHz original signal in 2-30 GHz microwave bands is given and discussed. The spectrum information of the dynamic original signals is obtained by monitoring the optical power in each sub-channel. We verify the feasibility of the multi-band coherent channelizer by channelizing two 4 GHz linearly-chirped signals with center frequencies of 4 and 28 GHz into four 1 GHz sub-channels, respectively.

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2022

Radio Science Techniques for Deep Space Exploration

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The Struggle for Ka-band: NASA's Gradual Move Towards Using 32-GHz Ka-band for Deep Space Missions

Cited by 8 publications

References 19 publications

CFDP-based two-hop relaying protocol over weather-dependent Ka-band space channel

CFDP-based two-hop relaying protocol over weather-dependent Ka-band space channel

Photonics-Assisted Multi-Band Microwave Receiver Based on Spectrum Analysis and Coherent Channelization

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