Pointing, acquisition, and tracking architecture tools for deep-space optical communications

Swati Mohan; Oscar Alvarez-Salazar; Kevin Birnbaum; Abhijit Biswas; William Farr; Hamid Hemmati; Shawn Johnson; Geraldo Ortiz; Kevin Quirk; Zahidul Rahman; Martin Regher; Farheen Rizvi; Joel Shields; Meera Srinivasan

doi:10.1117/12.2042704

6 March 2014 Pointing, acquisition, and tracking architecture tools for deep-space optical communications

Swati Mohan, Oscar Alvarez-Salazar, Kevin Birnbaum, Abhijit Biswas, William Farr, Hamid Hemmati, Shawn Johnson, Geraldo Ortiz, Kevin Quirk, Zahidul Rahman, Martin Regher, Farheen Rizvi, Joel Shields, Meera Srinivasan

Author Affiliations +

Proceedings Volume 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI; 89710H (2014) https://doi.org/10.1117/12.2042704
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

Deep-Space Optical Communications is a key emerging technology that is being pursued for high data-rate communications, which may enable rates up to ten times more than current Ka-band technology. Increasing the frequency of communication, from Ka-band to optical, allows for a higher data rate transfers. However, as the frequency of communication increases, the beam divergence decreases. Less beam divergence requires more accurate and precise pointing to make contact with the receiver. This would require a three-order-of-magnitude improvement from Ka-Band (~ 1 mrad) to optical (~ 1 urad) in the required pointing. Finding an architecture that can provide the necessary pointing capability is driven by many factors, such as allocated signal loss due to pointing, range to Earth, spacecraft disturbance profile, spacecraft base pointing capability, isolation scheme, and detector characteristics. We have developed a suite of tools to 1) flow down a set of pointing requirements (Error Budget Tool), 2) determine a set of architectures capable of meeting the requirements (Pointing Architecture Tool), and 3) assess the performance of possible architecture over the mission trajectory (Systems Engineering Tool). This paper describes the three tools and details their use through the case study of the Asteroid Retrieval Mission. Finally, this paper details which aspects of the pointing, acquisition, and tracking subsystem still require technology infusion, and the future steps needed to implement these pointing architectures.

Citation Download Citation

Swati Mohan, Oscar Alvarez-Salazar, Kevin Birnbaum, Abhijit Biswas, William Farr, Hamid Hemmati, Shawn Johnson, Geraldo Ortiz, Kevin Quirk, Zahidul Rahman, Martin Regher, Farheen Rizvi, Joel Shields, and Meera Srinivasan "Pointing, acquisition, and tracking architecture tools for deep-space optical communications", Proc. SPIE 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI, 89710H (6 March 2014); https://doi.org/10.1117/12.2042704

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available