A modular programmable digital UHF transponder

Mark Harris; Joe Dobrzanski

doi:10.1117/12.606871

2 June 2005 A modular programmable digital UHF transponder

Mark Harris, Joe Dobrzanski

Proceedings Volume 5819, Digital Wireless Communications VII and Space Communication Technologies; (2005) https://doi.org/10.1117/12.606871
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

A reprogrammable digital transponder architecture allows a common product design to be scaled to meet varying user capacity requirements, match the transponder to the spacecraft resources, and maximize affordability by minimizing non-recurring costs. On-orbit frequency programmability permits the design and hardware development to proceed in parallel with the frequency coordination process, reducing schedule risks and providing operational flexibility. Leverage of digital processing technologies achieves improved channel performance characteristics compared with traditional implementations while also allowing channel characteristics such as selectivity, adjacent channel rejection, and channel frequency plans to be altered in response to the on-orbit interference environment. Channel passband shapes can also be altered for higher capacity waveforms that require different passband shapes or that need improved phase linearity over wider passbands than legacy waveforms. The ability to change these parameters on-orbit in response to upgraded ground terminal technology made possible by software-based radios will allow extended mission life without compromising communications capabilities. An ultra-high frequency (UHF) transponder with a scalable, expandable (or contractible) modular architecture, on-orbit frequency selection over entire communications bands, and functional reprogrammability through digital signal processing capabilities is described.

Citation Download Citation

Mark Harris and Joe Dobrzanski "A modular programmable digital UHF transponder", Proc. SPIE 5819, Digital Wireless Communications VII and Space Communication Technologies, (2 June 2005); https://doi.org/10.1117/12.606871

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