Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Jack K. Holmes"'
Autor:
Jack K. Holmes, Srini H. Raghavan
Publikováno v:
2011 Aerospace Conference.
The process of removing the Doppler frequency of the input signal in the receiver on the input is performed by a Doppler removal circuit. The paper addresses the effects of quantizing the ideal sine waves for implementing the Doppler removal (a singl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::218b02bf26505eb2598f2566b581c174
https://doi.org/10.1109/aero.2011.5747343
https://doi.org/10.1109/aero.2011.5747343
Autor:
Srini H. Raghavan, Jack K. Holmes
Publikováno v:
2009 IEEE Aerospace conference.
This paper presents an analytic model for the mean time to lose lock for first-, second-, and third-order phase-locked loops (PLLs). The analytic model is of the same form as that of a first-order PLL with the appropriate corrections for second- and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2fe556f1a45c7658deb9f425da3de42
https://doi.org/10.1109/aero.2009.4839416
https://doi.org/10.1109/aero.2009.4839416
Autor:
Srini H. Raghavan, Jack K. Holmes
Publikováno v:
24th AIAA International Communications Satellite Systems Conference.
The Global Positioning System (GPS) is a spread-spectrum system that employs direct-sequence spreading of the spectrum to achieve excellent ranging accuracy. Modernized GPS will also use a directsequence spread-spectrum (DSSS) system, but unlike the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cde3ea61ee989be8cf7aadcc6253ab14
https://doi.org/10.2514/6.2006-5320
https://doi.org/10.2514/6.2006-5320
Publikováno v:
24th AIAA International Communications Satellite Systems Conference.
This paper deals with the problem of mathematically describing the probability specification of the time to first fix (TTFF) for a navigational receiver such as GPS, as a function of the receiver search time and the initial conditions. Commonly many
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b072fd0aae4879e34e1a75e82ef9055
https://doi.org/10.2514/6.2006-5321
https://doi.org/10.2514/6.2006-5321
Autor:
Jack K. Holmes, S. Raghavan
Publikováno v:
2003 IEEE Aerospace Conference Proceedings (Cat. No.03TH8652).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5200e90a639144707cd4ebc17b0b45c0
https://doi.org/10.1109/aero.2003.1235086
https://doi.org/10.1109/aero.2003.1235086
Autor:
Srini H. Raghavan, Jack K. Holmes
Publikováno v:
20th AIAA International Communication Satellite Systems Conference and Exhibit.
Srini Raghavan has over 25 years of experience in design, simulation and analysis of satellite communication systems, spread spectrum systems, and signal processing. Currently, he is supporting several communication systems and Global Positioning Sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21e60d2b1299e4d7c473dc81d9c1c8a9
https://doi.org/10.2514/6.2002-2052
https://doi.org/10.2514/6.2002-2052
Publikováno v:
17th AIAA International Communications Satellite Systems Conference and Exhibit.
GPS has become a unique satellite based service for a number of reasons. Originally a military only system, GPS civilian use has far overtaken the original user base. The limitations of the current civil service have resulted in a reevaluation of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca69056c33b3fc77b74791b11c9de022
https://doi.org/10.2514/6.1998-1331
https://doi.org/10.2514/6.1998-1331
Autor:
Jack K. Holmes
Publikováno v:
IEEE Transactions on Space Electronics and Telemetry. :1-6
An analysis of a coherent two-way (transponder) Doppler communication system composed of a ground transmitter, a spacecraft transponder, and a ground receiver has been made to determine the effects of VCO phase and thermal phase noise at the ground r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1511789679a75b61d2026c277ca06dc
https://doi.org/10.1109/tset.1965.5009629
https://doi.org/10.1109/tset.1965.5009629
Autor:
Jack K. Holmes
Publikováno v:
Journal of Optimization Theory and Applications. 2:102-116
A simple algorithmic solution is developed for the discrete time, nonlinear, system identification problem based on a stochastic approximation method. The method is applicable to the noisy, as well as the noiseless, input-output measurement case. A m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d63e40931b47ae516a6f8007eec73d0c
https://doi.org/10.1007/bf00929586
https://doi.org/10.1007/bf00929586
Autor:
Jack K. Holmes, Andreas Polydoros
Publikováno v:
MILCOM 1983 - IEEE Military Communications Conference.
The problem of detecting a frequency-hopping waveform in strong broadband additive white Gaussian noise (AWGN) is discussed. A key premise in the implementation of the detecting receiver is that of constrained complexity. As such, the use of the auto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac7f3a0e8eed0e7836a627839756eaac
https://doi.org/10.1109/milcom.1983.4794806
https://doi.org/10.1109/milcom.1983.4794806