John S Haskell

US Patent:

7584085, Sep 1, 2009

Filed:

May 11, 2006

Appl. No.:

11/431984

Inventors:

Jeffrey J. Gold - Rancho Palos Verdes CA, US
John D. Haskell - Chino Hills CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G06G 7/48

US Classification:

703 8, 709203, 709219

Abstract:

A spacecraft emulation system for emulating the operation of a spacecraft and the operation of a plurality of ground stations is coupled to spacecraft status and control clients that request connections to one of the plurality of simulated ground station ranging and tracking servers. The connection requests are made to a common address with a port address that is unique to a specific ground station. Separate range servers and tracking servers are instantiated for each ground station and return data specific to the ground station. The spacecraft emulation system determines ranging and tracking data for the plurality of simulated ground stations but supplies the data on a ground station by ground station basis. The status and control system transparently determines which ground station is simulated.

US Patent:

8370124, Feb 5, 2013

Filed:

Jun 16, 2000

Appl. No.:

09/597705

Inventors:

Jeffrey J. Gold - Rancho Palos Verdes CA, US
John D. Haskell - Torrance CA, US
David L. Koza - Lakewood CA, US
Michael J. Surace - Rancho Palos Verdes CA, US
Steven R. Zammit - Redondo Beach CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G06G 7/48
G06F 9/455
G06F 1/12
G01C 17/38
G01C 25/00
G01L 27/00
G01K 19/00
G01G 7/00

US Classification:

703 23, 700 6, 700 8, 700 25, 700 26, 700 28, 702 94, 702 95, 702 96, 702 97, 702 98, 702 99, 702173, 702174, 702175, 713400

Abstract:

An emulation system includes a central time source generating a time reference and an emulated spacecraft control processor which contains an embedded processor that provides an emulated input/output interface to communicate simulated spacecraft data. The embedded processor processes the simulated spacecraft data and contains a real time clock engine having a real-time clock period. The system further has a first simulation that processes attitude control system data from the emulated spacecraft control processor to simulate an attitude control system of the spacecraft in real-time. The first simulation engine operative to produce sensor data for input to the emulated spacecraft control processor based on the simulated system dynamics and adjusts the real time clock period in response to the time reference.