Uday J Shankar

US Patent:

7782811, Aug 24, 2010

Filed:

Apr 5, 2006

Appl. No.:

11/397936

Inventors:

Rich Battista - Ashburn VA, US
Jay Brosius - Frederick MD, US
Uday Shankar - Herndon VA, US

Assignee:

SkyBitz, Inc. - Sterling VA

International Classification:

H04B 7/216

US Classification:

370320, 370335, 370347, 370503, 370321, 455 121, 455427, 455434

Abstract:

A system and method for improving efficiency of satellite communications is described. In one embodiment, multiple return links are associated with a single forward link to reduce communications costs.

US Patent:

8155640, Apr 10, 2012

Filed:

Jun 8, 2006

Appl. No.:

11/448981

Inventors:

Rich Battista - Ashburn VA, US
Jay Brosius - Frederick MD, US
Uday Shankar - Herndon VA, US

Assignee:

SkyBitz, Inc. - Herndon VA

International Classification:

H04B 7/185
H04B 7/212
H04J 3/08
H04W 4/00

US Classification:

455427, 370321, 370326, 370347

Abstract:

A system and method for improving efficiency of satellite communications is described. In one embodiment, efficient satellite communications is enabled through event-driven reporting by a mobile terminal.

US Patent:

8428000, Apr 23, 2013

Filed:

Jul 16, 2010

Appl. No.:

12/837800

Inventors:

Rich Battista - Ashburn VA, US
Jay Brosius - Frederick MD, US
Uday Shankar - Herndon VA, US

Assignee:

SkyBitz, Inc. - Herndon VA

International Classification:

H04W 84/06

US Classification:

370321, 370316, 370320, 370318, 370335, 370305, 455427, 455428, 455430, 455447, 455504

Abstract:

A system and method for improving efficiency of satellite communications is described. In one embodiment, multiple return links are associated with a single forward link to reduce communications costs.

US Patent:

20120320756, Dec 20, 2012

Filed:

Apr 9, 2012

Appl. No.:

13/442032

Inventors:

Rich Battista - Ashburn VA, US
John Brosius - Frederick MD, US
Uday Shankar - Herndon VA, US

International Classification:

H04J 3/14

US Classification:

370241

Abstract:

A system and method for improving efficiency of satellite communications is described. In one embodiment, efficient satellite communications is enabled through event-driven reporting by a mobile terminal.

US Patent:

20130173380, Jul 4, 2013

Filed:

Jan 4, 2012

Appl. No.:

13/343197

Inventors:

Homaira Akbari - Washington DC, US
Uday Shankar - Herndon VA, US

International Classification:

G06Q 30/02

US Classification:

705 1443

Abstract:

A system and method for mobile advertising configuration. A mobile advertising platform provides a service to advertisers in generating and managing an advertising campaign. The mobile advertising platform receives an advertiser's input regarding the duration, geographies, targeted demographics, expected performance such as number of impressions, and pricing requirements of an advertising campaign. The mobile advertising platform selects mobile advertisement carriers controlled by one or more fleet operators for inclusion in said advertising campaign based on profiles for the mobile advertisement carriers. The mobile advertising platform provides proof-of-performance metrics and operational metrics to the advertisers to enable management and optimization of the advertising campaign in real-time. The mobile advertising platform provides dynamic pricing to the advertisers for their advertising campaign in real-time.

US Patent:

20130229978, Sep 5, 2013

Filed:

Apr 22, 2013

Appl. No.:

13/867401

Inventors:

John W. Brosius - Frederick MD, US
Uday Shankar - Herndon VA, US

Assignee:

SkyBitz, Inc. - Herndon VA

International Classification:

H04B 7/185

US Classification:

370319

Abstract:

A system and method for improving efficiency of satellite communications is described. In one embodiment, multiple return links are associated with a single forward link to reduce communications costs.

US Patent:

51405253, Aug 18, 1992

Filed:

Jul 31, 1991

Appl. No.:

7/745046

Inventors:

Uday J. Shankar - Plainsboro NJ
Kidambi V. Raman - East Windsor NJ

Assignee:

General Electric Company - East Windsor NJ

International Classification:

B64G 126

US Classification:

364459

Abstract:

An attitude control system for a spacecraft includes sensors for generating attitude control signals and logic for producing torque demand signals in the form of a T. sub. d matrix. The thrusters are oriented in complementary pairs about the center of mass for, when energized, producing mutually opposite torques. Information about the location of thrusters and their thrusts may be represented by a pulse-width-to-torque transformation matrix C. A weighted pseudo inverse of C is precalculated as Q=WC'(CWC'). sup. - (13) and is stored in memory associated with the flight computer, thereby avoiding the need for the flight computer to perform the intensive calculations of Q. Thruster pulsewidth for attitude control is easily calculated by the flight computer as. DELTA. sub. p =. tau. sub. p QT. sub. d (14) where. tau. sub.

US Patent:

56108206, Mar 11, 1997

Filed:

Mar 23, 1995

Appl. No.:

8/511936

Inventors:

Uday J. Shankar - Plainsboro NJ
Neil E. Goodzeit - East Windsor NJ
George E. Schmidt - Newtown PA

Assignee:

Martin Marietta Corp. - East Windsor NJ

International Classification:

B64G 124

US Classification:

364434023

Abstract:

A zero-momentum spacecraft's attitude is controlled by determining the torque required about a control axis to maintain the desired attitude, and, during each of recurrent control cycles, enabling a magnetic torquer if the torque demand exceeds a threshold. During each of the control cycles, thruster(s) are enabled to make up the difference between the torque demand and the estimated torque produced by the magnetic torquer. In determining the torque demand, the attitude rate signal is low-pass filtered to reduce noise, and the control loop bandwidth is maintained by totalling the estimated torque applied by the magnetic torquer and thrusters, integrating and high-pass filtering the estimated torque signals, and adding the filtered estimated torque with the filtered attitude rate signals to generate low-noise attitude rate signals. A three-axis system is described.