Zodiac Data Systems

College Park, GA, United States

Zodiac Data Systems

College Park, GA, United States
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The invention relates to a source for a reflector antenna, comprising:


The invention relates to a source (1) for a reflector antenna, comprising: - a pseudo-cavity (100), - a first sigma excitation device (10) for exciting the pseudo-cavity (100) in such a way as to generate a sum channel signal via a coaxial waveguide (400), - a second excitation device (20) for exciting the pseudo-cavity (100) in such a way as to generate a difference channel signal, the second device (20) comprising eight probes (8) angularly distributed around a principal emission axis (A) of the source (1), and a difference supply circuit (25) for supplying the eight excitation probes (8) according to the two modes TE21.


Gouldieff V.,CentraleSupelec IETR | Palicot J.,CentraleSupelec IETR | Daumont S.,Zodiac Data Systems
2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016 - Proceedings | Year: 2017

Automatic Modulation Classification (AMC) has received a major attention last decades, as a required step between signal detection and demodulation. In the fully-blind scenario, this task turns out to be quite challenging, especially when the computational complexity and the robustness to uncertainty matter. AMC commonly relies on a preprocessor whose function is to estimate unknown parameters, filter the received signal and sample it in a suitable way. Any preprocessing error inherently leads to a performance loss. To improve the robustness of the blind AMC, we propose to proceed almost directly on the received signal - with neither matched-filtering step nor synchronization step. In this paper, Analytical Mth-Power nonlinear Transformation (AMPT) is considered for its robustness towards timing, phase and frequency uncertainty. The generated feature-vector then feeds a Minimum Distance classifier. Numerical simulations show the effectiveness of the proposed method for a 7-class problem of low-order modulations. © 2016 IEEE.


News Article | February 16, 2017
Site: www.PR.com

SMi Reports: Japanese Cabinet Office will discuss future plans for Japan’s space diplomacy and space security at MilSatCom Asia Pacific, taking place on 15-16 May in Singapore. London, United Kingdom, February 16, 2017 --( Speaking at SMi’s MilSatCom Asia-Pacific conference this May, Colonel Shinichiro Tsui and Dr Hiroshi Yamakawa from Japanese Cabinet Office will be discussing Japan's space diplomacy with a focus on enhancing space security as well as developing regional cooperation. Colonel Tsui will address the increasing use of outer space for both civil and security applications and how advancement of space technology can help to enhance assets. He will also talk about the importance of promoting international cooperation including capacity building. Details about the future of space policy for the Japanese MoD and government will also be reviewed. Dr Yamakawa’s talk will outline the key aims and focuses of the Space Security Working Group and discuss sustainable development. Effective utilisation of space and the importance of stable use of outer space for allied forces in the Asia-Pacific region will also be explored. Firmly established as the leading conference for SatCom and communication experts, MilSatcom Asia Pacific will take place on the 15th-16th May 2017, at the Grand Copthorne Water Front Hotel in Singapore. Focusing on developing strategic space programmes and space security, the 2017 show invites not only programme managers, capability directors and operational commanders from the armed forces, but will also provide a perfect platform for both operational users and industry to share their experiences in the enhancement of satellite for effective military communications across Asia Pacific. Notable presenters include Republic of Korea Armed Forces Military, U.S. Air Force, Indian Army, New Zealand Defence Force, Japanese Cabinet Office, ASEAN Chief Information Officer Association, Ministry of Defence of the Republic of Indonesia, Maritime Forces Pacific Headquarters, Indonesia Maritime Studies, S.Rajaratnam School of International Studies, GAPSAT. The 7th annual event will also feature an all new exclusive half day post conference workshop hosted by The Aerospace Corporation, taking place on the 17th May, 2017. Attending the event enables you to meet, network and hear about the latest developments in national MilSatCom and space programs from leading nations within the Asia Pacific region, as well as learning how satellite capabilities are effectively used in times of peace as well as war. Explore how key nations such as the US and Canada are assisting the growth of MilSatCom programs in the Asia-Pacific region, and discuss and develop partnerships with allied nations to improve and enhance cooperation effectively. Attendees for the 2016 show includes: Airbus Defence and Space SAS, Data Device Corporation, DSO National Labs, DSTA, Embassy of Romania, Eutelsat Asia, FMV, ILS, Intelsat General Corporation, Korea Aerospace Research Institute, Kratos Networks, MCC Corporation, Philippine Navy, Rohde & Schwarz, SaMS, Singapore Armed Forces, Singapore Defence Science and Technology Agency, Singapore MoD, Singapore Space & Technology Association, Sky Perfect JSAT Corporation, ST Electronics (Satcom & Sensor Systems) Pte Ltd, Telespazio, The Aerospace Corporation, U.S Embassy In Singapore, ViaSat, Inc., Zodiac Data Systems and much more. For those looking to attend, there is S$300 early bird offer available online ending on 28th February 2017. Further information is available at http://www.milsatcomasia.com/prcom 7th Annual MilSatCom Asia Pacific 15th – 16th May 2017 Grand Copthorne Waterfront Hotel, Singapore http://www.milsatcomasia.com/prcom Sponsored by Hughes Media: Contact Theresa Chung on tchung@smi-online.co.uk Booking: Contact James Hitchen on jhitchen@smi-online.co.uk Established since 1993, the SMi Group is a global event-production company that specializes in Business-to-Business Conferences, Workshops, Masterclasses and online Communities. We create and deliver events in the Defence, Security, Energy, Utilities, Finance and Pharmaceutical industries. We pride ourselves on having access to the worlds most forward thinking opinion leaders and visionaries, allowing us to bring our communities together to Learn, Engage, Share and Network. More information can be found at http://www.smi-online.co.uk London, United Kingdom, February 16, 2017 --( PR.com )-- Following their first military satellite launched on January 24th, Japan is ready to share their upcoming plans regarding space diplomacy and security.Speaking at SMi’s MilSatCom Asia-Pacific conference this May, Colonel Shinichiro Tsui and Dr Hiroshi Yamakawa from Japanese Cabinet Office will be discussing Japan's space diplomacy with a focus on enhancing space security as well as developing regional cooperation.Colonel Tsui will address the increasing use of outer space for both civil and security applications and how advancement of space technology can help to enhance assets. He will also talk about the importance of promoting international cooperation including capacity building. Details about the future of space policy for the Japanese MoD and government will also be reviewed.Dr Yamakawa’s talk will outline the key aims and focuses of the Space Security Working Group and discuss sustainable development. Effective utilisation of space and the importance of stable use of outer space for allied forces in the Asia-Pacific region will also be explored.Firmly established as the leading conference for SatCom and communication experts, MilSatcom Asia Pacific will take place on the 15th-16th May 2017, at the Grand Copthorne Water Front Hotel in Singapore. Focusing on developing strategic space programmes and space security, the 2017 show invites not only programme managers, capability directors and operational commanders from the armed forces, but will also provide a perfect platform for both operational users and industry to share their experiences in the enhancement of satellite for effective military communications across Asia Pacific.Notable presenters include Republic of Korea Armed Forces Military, U.S. Air Force, Indian Army, New Zealand Defence Force, Japanese Cabinet Office, ASEAN Chief Information Officer Association, Ministry of Defence of the Republic of Indonesia, Maritime Forces Pacific Headquarters, Indonesia Maritime Studies, S.Rajaratnam School of International Studies, GAPSAT.The 7th annual event will also feature an all new exclusive half day post conference workshop hosted by The Aerospace Corporation, taking place on the 17th May, 2017.Attending the event enables you to meet, network and hear about the latest developments in national MilSatCom and space programs from leading nations within the Asia Pacific region, as well as learning how satellite capabilities are effectively used in times of peace as well as war. Explore how key nations such as the US and Canada are assisting the growth of MilSatCom programs in the Asia-Pacific region, and discuss and develop partnerships with allied nations to improve and enhance cooperation effectively.Attendees for the 2016 show includes: Airbus Defence and Space SAS, Data Device Corporation, DSO National Labs, DSTA, Embassy of Romania, Eutelsat Asia, FMV, ILS, Intelsat General Corporation, Korea Aerospace Research Institute, Kratos Networks, MCC Corporation, Philippine Navy, Rohde & Schwarz, SaMS, Singapore Armed Forces, Singapore Defence Science and Technology Agency, Singapore MoD, Singapore Space & Technology Association, Sky Perfect JSAT Corporation, ST Electronics (Satcom & Sensor Systems) Pte Ltd, Telespazio, The Aerospace Corporation, U.S Embassy In Singapore, ViaSat, Inc., Zodiac Data Systems and much more.For those looking to attend, there is S$300 early bird offer available online ending on 28th February 2017.Further information is available at http://www.milsatcomasia.com/prcom7th Annual MilSatCom Asia Pacific15th – 16th May 2017Grand Copthorne Waterfront Hotel, Singaporehttp://www.milsatcomasia.com/prcomSponsored by HughesMedia: Contact Theresa Chung on tchung@smi-online.co.ukBooking: Contact James Hitchen on jhitchen@smi-online.co.ukEstablished since 1993, the SMi Group is a global event-production company that specializes in Business-to-Business Conferences, Workshops, Masterclasses and online Communities. We create and deliver events in the Defence, Security, Energy, Utilities, Finance and Pharmaceutical industries. We pride ourselves on having access to the worlds most forward thinking opinion leaders and visionaries, allowing us to bring our communities together to Learn, Engage, Share and Network. More information can be found at http://www.smi-online.co.uk Click here to view the list of recent Press Releases from SMi Group


Jhaidri M.A.,CNRS Communication and Information Sciences Laboratories | Laot C.,CNRS Communication and Information Sciences Laboratories | Thomas A.,Zodiac Data Systems
2016 International Symposium on Signal, Image, Video and Communications, ISIVC 2016 | Year: 2017

Deep space communication systems operate in the presence of high atmospheric attenuation and the capacity of the on-board energy generator is limited which produces a very low signal to noise ratio (SNR) at the reception. In order to satisfy the required transmission quality of deep space mission in terms of power and spectral efficiency, a coherent demodulation is mandatory. Coherent demodulation performance depends on the carrier phase synchronizer ability and its robustness against transmission constraints such as time-varying Doppler effect (Doppler rate). An efficient and well designed carrier phase recovery scheme is required to assure the synchronization. This paper analyses the performance of a blind carrier phase synchronizer derived from the maximum a posteriori criterion (MAP) and Laurent expansion for precoded Gaussian Minimum Shift Keying (GMSK) modulation. Due to the scarcity of spectral resources allocated for deep space transmission, the data-aided approach is not allowed. In the previous works, the carrier phase recovery system performance was evaluated in tracking phase without assessing its capacity in locking phase. In this paper, we present a more complete analysis of a GMSK carrier phase synchronizer covering the nonlinear acquisition phase and the theoretical operating limits in terms of SNR and input phase offset (Doppler, Doppler rate) in a closed-loop structure. © 2016 IEEE.


Trademark
Zodiac Data Systems and Enertec | Date: 2011-04-05

Automatic token, coin or banknote-operated apparatus, meters and indicators, namely, automatic vending machines and mechanisms for token-operated apparatus, coin-operated apparatus, or banknote-operated apparatus; remote counting and remote reading apparatus, namely, electric installations for remote control of industrial, aerospace and military operations; voting machines; magnetic recorders for laboratories and tests, namely, instrumentation recorders for industrial, aerospace and military applications; assemblies for use in meteorology, namely, meteorological instruments; equipment recorders, namely, mission video and data recorders for aerospace and military applications, with their ancillary equipment and software; scientific apparatus and instruments, namely, optical mirrors; nautical apparatus and instruments, namely, marine compasses; surveying instruments; photographic apparatus and instruments, namely, photographic cameras; cinematographic apparatus and instruments, namely, cinematographic cameras; weighing apparatus and instruments, namely, scales; signaling apparatus and instruments, namely, rotating lights; emergency apparatus and instruments, namely, emergency signal transmitters; talking machines.


Savaux V.,Supelec | Djoko-Kouam M.,ECAM Rennes Louis de Broglie | Louet Y.,Supelec | Skrzypczak A.,Zodiac Data Systems
IET Signal Processing | Year: 2014

In this article, the authors study the convergence of an iterative algorithm for the joint estimation of the signal-to-noise ratio (SNR) and the transmission channel in orthogonal frequency division multiplexing context. At each step of the algorithm, the authors use the minimum-mean-square error (MMSE)-based SNR estimation, which feeds the linear MMSE channel estimation. Reciprocally, this efficient channel estimation is used to perform the SNR estimation. The authors provide a proof of convergence of the algorithm to a single value. Furthermore, we derive an accurate approximation of the bias of the estimation. Simulations show that the algorithm converges quickly and verifies the theoretical results. They also show the efficiency of both SNR and channel estimation. By comparing with the existing methods, the authors show that the tradeoff between the number of required pilots in the preamble and the performance of the SNR estimation were improved. Furthermore, for a fixed bit error rate, the SNR gap between the proposed channel estimation and the perfect one is <0.5 dB. © 2014 The Institution of Engineering and Technology.


Savaux V.,ECAM Rennes Louis de Broglie | Savaux V.,Supelec | Louet Y.,Supelec | Djoko-Kouam M.,ECAM Rennes Louis de Broglie | Skrzypczak A.,Zodiac Data Systems
Eurasip Journal on Advances in Signal Processing | Year: 2013

This article presents an iterative minimum mean square error- (MMSE-) based method for the joint estimation of signal-to-noise ratio (SNR) and frequency-selective channel in an orthogonal frequency division multiplexing (OFDM) context. We estimate the SNR thanks to the MMSE criterion and the channel frequency response by means of the linear MMSE (LMMSE). As each estimation requires the other one to be performed, the proposed algorithm is iterative. In this article, a realistic case is considered; i.e., the channel covariance matrix used in LMMSE is supposed to be totally unknown at the receiver and must be estimated. We will theoretically prove that the algorithm converges for a relevantly chosen initialization value. Furthermore simulations show that the algorithm quickly converges to a solution that is close to the one in which the covariance matrix is perfectly known. Compared to existing SNR estimation methods, the algorithm improves the trade-off between the number of required pilots and the SNR estimation quality. © 2013 Savaux et al.; licensee Springer.


Trademark
Zodiac Data Systems | Date: 2015-09-24

General purpose computing platform, namely, a mobile and operating platform consisting of a remote video encoder, computer server and electronic data recorder designed for airborne surveillance and reconnaissance; Video recorders; Digital data recorders, namely, apparatus for recording data digitally; Electronic data recorders; Bank data cartridges, namely, data recording and storage devices comprising integrated memory circuits containing non-volatile memory; Data cartridge drives, namely, devices for recording data on data cartridges and retrieving data stored on data cartridges; Computer hardware and software and electro-mechanical devices sold as a unit for data acquisition, transmission, processing, storage, display, and instruction manuals sold therewith; Semiconductor tape recorders and disk drives; In-flight testing equipment; Flight testing equipment, namely, transmitters, telemetry receivers, missile encoders, flight test encoders, data acquisition units, radio tracking receivers, mobile tracking antennas, file data servers, mission video recorders, mission audio recorders, mission data recorders, and flight test recorders; Flight test antenna tracking systems; Radio transmitters, receivers, and controllers for monitoring and controlling flight and missile tests; Apparatus for checking flight parameters.


Patent
Zodiac Data Systems | Date: 2014-06-16

The invention relates to a source (S) for a parabolic antenna, comprising:a sigma radiating assembly (1S, 1C, 1L) suitable for generating the sigma channel including a sigma radiating element (11) positioned on a main transmission/reception axis (A) of the source (S), and a sigma supply circuit (12) to supply the sigma radiating element (11), anda delta radiating assembly (2S, 2C, 2L) suitable for generating the delta channel including eight delta radiating elements (21S, 21C, 21L), arranged around the main transmission/reception axis (S) of the source (S), and a delta supply circuit (22S, 22C, 22L).

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