The NASA Lunar Laser Communication Demonstration—Successful High-Rate Laser Communications To and From the Moon

2014 ◽  
Author(s):  
Bryan S. Robinson ◽  
Don M. Boroson ◽  
Dennis Burianek ◽  
Daniel Murphy ◽  
Farzana Khatri ◽  
...  
Keyword(s):  
High Rate ◽  
Laser Communication ◽  
The Moon ◽  
Lunar Laser ◽  
Laser Communications

scholarly journals Gain-switched seed laser for Deep Space communication applications

2018 ◽  
Vol 10 (2) ◽  
pp. 45
Author(s):  
Paweł Grześ ◽  
Maria Michalska ◽  
Jacek Świderski
Keyword(s):  
Optical Communication ◽  
Optical Communications ◽  
High Speed ◽  
High Capacity ◽  
Optical Signal ◽  
Laser Communication ◽  
Seed Laser ◽  
Deep Space ◽  
Lunar Laser ◽  
Laser Communications

Deep Space (DS) communication plays an important role in space exploration programs, especially in interplanetary flights projects. To resolve limitations of a well-known microwave link, an optical communication is considered. In the article a gain-switched seed laser for high power transmitter in a Master Oscillator Power Amplifier (MOPA) architecture is presented. This optical signal source is able to generate picosecond pulses on demand and is suitable for high speed data link over a long range. The laser is dedicated to the pulse position modulation (PPM) scheme for low power consuming, high capacity and energy efficient optical communication. Full Text: PDF ReferencesH. Hemmati, Deep Space Optical Communications (Jet Propulsion Laboratory 2005), John Wiley & Sons, 2006. CrossRef T. Tolker-Nielsen and G. Oppenhauser, “In-Orbit Test Result of an Operational Intersatellite Link between ARTEMIS and SPOT 4,” FreeSpace Laser Communication Technologies XIV, Proceedings of SPIE, vol. 4639, pp. 1–15, San Jose, California, January 2002. CrossRef D. M. Boroson, et al., "Overview and results of the Lunar Laser Communication Demonstration", Proc SPIE 8971, 89710S (2014). CrossRef D. M. Boroson, A. Biswas, B. L. Edwards, "MLCD: overview of NASA's Mars laser communications demonstration system", P. Soc. Photo-Opt. Ins. 5338 (2004). CrossRef H. Hemmati, A. Biswas, I. B. Djordjevic, "Deep-Space Optical Communications: Future Perspectives and Applications", Proc. of the IEEE 99.11, (2011). CrossRef H. Kaushal, G. Kaddoum, "Optical Communication in Space: Challenges and Mitigation Techniques", IEEE Commun Surv Tut. 19.1, 57 (2017). CrossRef B. Moision, J. Hamkins, M. Cheng, "Deep-space optical communications downlink budget: modulation and coding", IPN Prog. Rep. 42.154, 1 (2005). DirectLink

Effect of non-tidal station loading on Lunar Laser Ranging observatories and on the estimation of Earth orientation parameters

2021 ◽  
Author(s):  
Vishwa Vijay Singh ◽  
Liliane Biskupek ◽  
Jürgen Müller ◽  
Mingyue Zhang
Keyword(s):  
Research Centre ◽  
Laser Ranging ◽  
The Moon ◽  
Lunar Laser Ranging ◽  
Earth Orientation Parameters ◽  
Tidal Station ◽  
Earth Orientation ◽  
The Earth ◽  
Lunar Laser ◽  
Orientation Parameters

<p>The distance between the observatories on Earth and the retro-reflectors on the Moon has been regularly observed by the Lunar Laser Ranging (LLR) experiment since 1970. In the recent years, observations with bigger telescopes (APOLLO) and at infra-red wavelength (OCA) are carried out, resulting in a better distribution of precise LLR data over the lunar orbit and the observed retro-reflectors on the Moon, and a higher number of LLR observations in total. Providing the longest time series of any space geodetic technique for studying the Earth-Moon dynamics, LLR can also support the estimation of Earth orientation parameters (EOP), like UT1. The increased number of highly accurate LLR observations enables a more accurate estimation of the EOP. In this study, we add the effect of non-tidal station loading (NTSL) in the analysis of the LLR data, and determine post-fit residuals and EOP. The non-tidal loading datasets provided by the German Research Centre for Geosciences (GFZ), the International Mass Loading Service (IMLS), and the EOST loading service of University of Strasbourg in France are included as corrections to the coordinates of the LLR observatories, in addition to the standard corrections suggested by the International Earth Rotation and Reference Systems Service (IERS) 2010 conventions. The Earth surface deforms up to the centimetre level due to the effect of NTSL. By considering this effect in the Institute of Geodesy (IfE) LLR model (called ‘LUNAR’), we obtain a change in the uncertainties of the estimated station coordinates resulting in an up to 1% improvement, an improvement in the post-fit LLR residuals of up to 9%, and a decrease in the power of the annual signal in the LLR post-fit residuals of up to 57%. In a second part of the study, we investigate whether the modelling of NTSL leads to an improvement in the determination of EOP from LLR data. Recent results will be presented.</p>

Atmospheric Laser Communication Receives a High Rate of Laser Technology

2014 ◽  
Vol 912-914 ◽  
pp. 585-588
Author(s):  
Quan Liu ◽  
Xu Yang ◽  
Yi Feng Zhu
Keyword(s):  
Channel Coding ◽  
Detection Method ◽  
High Rate ◽  
Laser Communication ◽  
Transmission Channel ◽  
Laser Technology ◽  
Coding Scheme ◽  
Rs Code ◽  
Atmospheric Channel ◽  
Channel Environment

This paper mainly discusses laser receiver technology at atmospheric channel high-rate environmentThesis analyzes the influencing factors of atmospheric laser transmission channel, Discussed the composition of the laser receiving system to study the floating threshold signal detection method of the laser, Study interleaved RS code + code to achieve channel coding scheme, the final results of the tests are given under the channel environment is a high rate of atmospheric laser receiving system.

Lunar Laser Communication Demonstration in USA: Terminal Design

2014 ◽  
Vol 51 (5) ◽  
pp. 050003 ◽  
Author(s):  
宋婷婷 Song Tingting ◽  
马晶 Ma Jing ◽  
谭立英 Tan Liying ◽  
于思源 Yu Siyuan ◽  
冉启文 Ran Qiwen
Keyword(s):  
Laser Communication ◽  
Lunar Laser ◽  
Terminal Design

The Lunar Laser Communications Demonstration

2011 ◽  
Author(s):  
Bryan Robinson ◽  
Don Boroson ◽  
D. A. Burianek ◽  
D. V. Murphy
Keyword(s):  
Lunar Laser ◽  
Laser Communications

scholarly journals Demonstration of High-Rate Laser Communications From a Fast Airborne Platform

2015 ◽  
Vol 33 (9) ◽  
pp. 1985-1995 ◽  
Author(s):  
Florian Moll ◽  
Joachim Horwath ◽  
Amita Shrestha ◽  
Martin Brechtelsbauer ◽  
Christian Fuchs ◽  
...  
Keyword(s):  
High Rate ◽  
Laser Communications

Overview and results of the Lunar Laser Communication Demonstration

2014 ◽  
Author(s):  
Don M. Boroson ◽  
Bryan S. Robinson ◽  
Daniel V. Murphy ◽  
Dennis A. Burianek ◽  
Farzana Khatri ◽  
...  
Keyword(s):  
Laser Communication ◽  
Lunar Laser

scholarly journals MILLIMETRE MOON MEASUREMENT: 50 YEARS OF LUNAR LASER RANGING SINCE APOLLO 11!

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 1105-1110
Author(s):  
J. F. Brock
Keyword(s):  
Laser Ranging ◽  
The Moon ◽  
Lunar Laser Ranging ◽  
The Earth ◽  
Space Race ◽  
Lunar Laser ◽  
Space Star ◽  
Gravitational Influence ◽  
Tv Shows ◽  
Set Up

Abstract. Since the dawn of time the Moon has held fascination for the earliest humans who saw it as a natural navigational beacon, a heavenly body to be revered and a poetic inspiration. Ancient art features the Moon as a prominent subject from all epochs and genres. The name “lunatic” infers that it drives men insane. Giant tides and rapid recessions of water are all attributed to its gravitational influence. As a young boy I was thrilled by stories of Moon travel like Jules Verne’s “From the Earth to the Moon” plus TV shows and movies such as “Lost in Space”, “Star Trek” and “Dr. Who.”The Russian-American “Space Race” focussed on the exciting possibility of man landing on the Moon. I cannot forget the live telecast of the Apollo 11 astronauts on the Moon’s surface in 1969 when I was 13 years old. Four years later I decided to be a land boundary surveyor trained in precise measurement for land title creation. My curiosity was alerted to the Apollo 11 laser ranging aspect of the project when the US team set up a bank of retro-reflectors for measurements from powerful devices on the Earth in the same way we Earthly surveyors make our daily measurements using such EDM equipment.In this paper I will describe the techniques and equipment utilised during this accurate Moon positioning project. You will also see the Earth observatories still measuring to five sites on the Moon and some ancient admirable attempts to determine this distance.

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