EXHIBIT 1 JOINT FILING AGREEMENT The undersigned hereby agree that the foregoing Schedule 13D may be filed on behalf of each of them. January 10, 1997 Matra Marconi Space UK Limited By: Nicholas E. Franks, Managing Director /s/ Nicholas E. Franks*...

                                                                       EXHIBIT 1

                             JOINT FILING AGREEMENT


         The  undersigned  hereby agree that the  foregoing  Schedule 13D may be
filed on behalf of each of them.

January 10, 1997



                                    Matra Marconi Space UK Limited

                                    By:  Xxxxxxxx X. Xxxxxx, Managing Director

                                    /s/  Xxxxxxxx X. Xxxxxx*
                                    -------------------------------------


                                    MCN Sat U.S., Inc.

                                    By:  Xxxxxx Xxxxx, President and CEO

                                    /s/  Xxxxxx Xxxxx*
                                    -------------------------------------



/s/  J. Xxxx Xxxxxxxx
----------------------
*J. Xxxx Xxxxxxxx, Attorney-in-Fact


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