Abstract: A constellation planning system receives a request, from a client, to plan an optimal set of tasks for one or more satellites in a constellation of satellites and at least one ground station in a constellation of ground stations. The request includes a planning problem object. The system generates a status of the planning task describing a progress of the planning task, and returns the status to the client. If the status of a task is successful, then the client may retrieve the resulting schedule and publish it to the constellation.

Abstract: A constellation planning system receives a request, from a client, to plan an optimal set of tasks for one or more satellites in a constellation of satellites and at least one ground station in a constellation of ground stations. The request includes a planning problem object. The system generates a status of the planning task describing a progress of the planning task, and returns the status to the client. If the status of a task is successful, then the client may retrieve the resulting schedule and publish it to the constellation.

Abstract: A solid phase synthesis system including one or more reaction vessels, one or more structural unit chemical dispensing units, one or more synthesis chemical dispensing units, and a controller is provided. The arrangement of the reaction vessels, dispensing units and corresponding fluid interconnections restricts cross-contamination within the system. The controller facilitates automated or semi-automated production of various organic compounds. Associated software including varying command structures may be provided to facilitate ease in programming and automating of the synthesis system.

Abstract: A low cost miniature standard-sized coaxial connector has an increased impedance at its rear portion in a simple and rugged construction. A one-piece molded insulator (16) lies within a sheet metal shell (14) and supports a center contact (18) of the connector. The insulator has a rear portion (34) with a cylindrical sleeve-shaped part (50) closely received within the shell and with three ribs (60-64) extending radially inwardly and having free radially inner ends (68). The center contact has a barb (40) lying in an interference fit within the inner ends of the ribs. The insulator forms a pin lead-in (44) at the front end of the connector, and forms a coupling part (80) between the rearward portion and the lead-in part. The coupling part is in the form of a cylindrical sleeve along its lower half, and has an upwardly-extending slot (82) along its upper half.

Abstract: A feedback and shift unit is arranged to reduce to a minimum the number of processing steps required in a processor, such as a DSP, to achieve a particular operating function, such as a linear feedback shift or a stepping function used by encryption algorithms. The feedback and shift unit (50) comprises a linear feedback shift register (52) for storing a value of the feedback and shift unit. A tap register (56) stores a tap position indicator indicative of tap positions for the feedback and shift unit (50). An input provides data to the feedback and shift unit. A feedback matrix, coupled to receive the data from the input, provides data bits, generated in response to the data and the tap position indicator, that are shifted into the linear feedback shift register (52) to form the value stored therein.

Abstract: A cyclic redundancy coder (10) is arranged to reduce to a minimum the number of processing steps required in a processor, such as a DSP, to achieve a cyclic redundancy coding function. The cyclic redundancy coder (10) comprises a shift register (12) having a plurality of storage elements each for storing a bit of a cyclic redundancy code word. A tap register (16) stores a tap position indicator indicative of tap positions in the cyclic redundancy code word that are subject to a logical operation. An input (18) provides input data to the cyclic redundancy coder. A logic feedback network (20-28) receives the data from the input and provides the logical operation. The logic feedback network also provides a plurality of data bits generated in response to the input data and each bit contained in each storage element identified by the tap position indicator. The cyclic redundancy code word is produced by applying at least one of the plurality of data bits to one storage element that is adjacent a tap position.