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1. 发明授权

US5517016A Lasercom system architecture with reduced complexity 失效
标题翻译： Lasercom系统架构降低了复杂性
公开(公告)号：US5517016A
公开(公告)日：1996-05-14
申请号：US223938
申请日：1994-03-31
申请人： James R. Lesh , Chien-Chung Chen , Homayoon Ansari
发明人： James R. Lesh , Chien-Chung Chen , Homayoon Ansari
IPC分类号： G01B11/27 , H04B10/118 , G01J1/20 , G01B11/26
CPC分类号： H04B10/118 , G01B11/272
摘要： Spatial acquisition and precision beam pointing functions are critical to spaceborne laser communication systems. In the present invention a single high bandwidth CCD detector is used to perform both spatial acquisition and tracking functions. Compared to previous lasercom hardware design, the array tracking concept offers reduced system complexity by reducing the number of optical elements in the design. Specifically, the design requires only one detector and one beam steering mechanism. It also provides means to optically close the point-ahead control loop. The technology required for high bandwidth array tracking was examined and shown to be consistent with current state of the art. The single detector design can lead to a significantly reduced system complexity and a lower system cost.
摘要翻译：空间采集和精确光束指向功能对于航天激光通信系统至关重要。在本发明中，单个高带宽CCD检测器用于执行空间采集和跟踪功能。与以前的Lasercom硬件设计相比，阵列跟踪概念通过减少设计中的光学元件数量来降低系统复杂性。具体来说，该设计只需要一个检测器和一个光束转向机构。它还提供了光学关闭前进控制回路的手段。检查了高带宽阵列跟踪所需的技术，并显示出与当前技术水平一致。单个检测器设计可以显着降低系统复杂性并降低系统成本。

2. 发明授权

US4677629A Means for phase locking the outputs of a surface emitting laser diode array 失效
标题翻译：用于相位锁定表面发射激光二极管阵列的输出的装置
公开(公告)号：US4677629A
公开(公告)日：1987-06-30
申请号：US781812
申请日：1985-09-30
申请人： James R. Lesh
发明人： James R. Lesh
IPC分类号： H01S3/00 , H01S5/00 , H01S5/40 , H01S5/42 , H01S3/098
CPC分类号： H01S5/423 , H01S5/4006 , H01S5/005 , H01S5/4031
摘要： An array of diode lasers, either a two-dimensional array of surface emitting lasers, or a linear array of stripe lasers, is phase locked by a diode laser through a hologram which focuses the output of the diode laser into a set of distinct, spatially separated beams, each one focused onto the back facet of a separate diode laser of the array. The outputs of the diode lasers thus form an emitted coherent beam out of the front of the array.
摘要翻译：二极管激光器阵列，二维阵列的表面发射激光器或条形激光器的线性阵列，通过二极管激光器通过全息图相位锁定，该全息图将二极管激光器的输出聚焦成一组不同的空间分离的光束，每一个聚焦在阵列的单独的二极管激光器的背面上。因此，二极管激光器的输出因此在阵列的前面形成发出的相干光束。

3. 发明授权

US4012696A Multiple rate digital command detection system with range clean-up capability 失效
标题翻译：具有范围清理能力的多速率数字指令检测系统
公开(公告)号：US4012696A
公开(公告)日：1977-03-15
申请号：US658449
申请日：1976-02-17
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , James R. Lesh , Stanley A. Butman
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , James R. Lesh , Stanley A. Butman
IPC分类号： G01S13/82 , H04B7/216 , H04B14/08 , H04B7/14
CPC分类号： G01S13/82 , H04B14/08 , H04B7/216
摘要： A multi-rate digital command system is disclosed which uses the composite signal of a .mu.-type ranging system as a subcarrier to transmit range codes and data from a station to a receiver where the range codes are sequentially phase modulated on a subcarrier of frequency f.sub.sc by one of its own subharmonics as follows:C.sub.i = f.sub.sc .sym. f.sub.sc /2.sup.iand data is phase modulated on a selected ranging component, C.sub.i, where i is a number selected from the sequence 1, 2 . . . n in which the ranging components are transmitted. A range cleanup loop in a spacecraft locks the phase of a locally generated reference component C.sub.i to a received ranging component C.sub.i and retransmits the component to a ground station. When the inverse phase, C.sub.i , of a ranging component is received and detected, the cleanup loop is modified to demodulate phase modulated command symbols while continuing tracking the same ranging component C.sub.i. The command symbol rate is coherently related to the ranging signal component bit rate.
摘要翻译：公开了一种多速率数字命令系统，其使用μ型测距系统的复合信号作为副载波来传送范围码和数据，从站到接收机，其中范围码在频率fsc的子载波上顺序相位调制通过其自身的次谐波如下：

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