公开(公告)号：WO1990007236A1

公开(公告)日：1990-06-28

申请号：PCT/US1989004902

申请日：1989-11-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HSU, Hui-Pin

IPC: H04B10/24

CPC classification number: H04B10/25

Abstract: A signal power control system for fiber optic communications systems is disclosed herein. The invention is adapted for use in a system including a transmitter (760), a receiver (440), an optic fiber (160) therebetween, and bobbin means (180) for dispensing the fiber. The invention includes means (480) for detecting the power of the signal delivered to the receiver (440) from the transmitter (760) and for producing a control signal which varies in response to the detected signal power level. Means for providing the control signal to power control means (740) are included. The power control means (740) is responsive to the control signal and operates to vary the output power of the transmitter (760) as necessary to accommodate the dynamic range of the receiver (440).

Abstract translation: 本文公开了一种用于光纤通信系统的信号功率控制系统。 本发明适用于包括发射器（760），接收器（440），其间的光纤（160）和用于分配光纤的线轴装置（180）的系统中的系统。 本发明包括用于检测从发射机（760）传送到接收机（440）的信号的功率的装置（480），并用于产生响应于检测到的信号功率电平而变化的控制信号。 包括用于向控制装置（740）提供控制信号的装置。 功率控制装置（740）响应于控制信号，并且根据需要操作以改变发射器（760）的输出功率以适应接收器（440）的动态范围。

公开(公告)号：WO1990007201A1

公开(公告)日：1990-06-28

申请号：PCT/US1989005145

申请日：1989-11-15

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  KURTZ, Louis, A.

IPC: H01Q21/00

CPC classification number: H01Q21/064 ,  H01Q21/005

Abstract: An improved feed waveguide (15) for an antenna (10) is disclosed which reduces coupling junction phase errors. The improved feed waveguide (15) of the present invention includes first and second slotted parallel walls (35) and (37) along the length thereof. The first wall (35) includes a first elongate slot (27) therethrough having a first longitudinal axis (44). The second wall (37) includes a second elongate slot (32) which is located on the second wall (37) opposite the first slot (27) on the first wall (35). The second slot (32) has a longitudinal axis (42) which is orthogonal to the longitudinal axis (44) of the first slot (27).

Abstract translation: 公开了一种用于天线（10）的改进馈电波导（15），其减少耦合结相位误差。 本发明的改进的馈送波导（15）包括沿其长度的第一和第二开槽的平行壁（35）和（37）。 第一壁（35）包括通过其具有第一纵向轴线（44）的第一细长槽（27）。 第二壁（37）包括第二细长槽（32），其位于第二壁（37）上，与第一壁（35）上的第一槽（27）相对。 第二槽（32）具有与第一槽（27）的纵向轴线（44）正交的纵向轴线（42）。

公开(公告)号：WO1990007200A1

公开(公告)日：1990-06-28

申请号：PCT/US1989005076

申请日：1989-11-15

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  RODRIGUEZ, Angel, E. ,  ALFING, Norman, L.

IPC: H01Q21/00

CPC classification number: H01Q21/0087 ,  H01Q21/005

Abstract: An antenna assembly (10) fabricated of lightweight, aluminum alloy foil material which forms individual parts that are laser welded together. The parts include mating projecting tabs (18) and slots (20) which render the unit self-jigging in assembly and provide added strength in the finally welded unit. Common tooling pins (not shown) are used to stack the piece parts in proper alignment during assembly by inserting the pins through particular tooling holes (46) in individual parts. Laser welding is used at various levels of assembly and a base module sub-assembly is initially fabricated, to which additional individual components are affixed and welded in place. The resulting unit is a precision antenna assembly, light in weight and structurally strong, which can be built with very low fabrication costs. The microwave aperture features of the unit are developed and located with the feature relationship being held to very precise tolerances.

Abstract translation: 一种由重量轻的铝合金箔材料制成的天线组件（10），其形成激光焊接在一起的各个部件。 这些部件包括配合的突出突片（18）和槽（20），这使得装置组装时自动跳动并在最终焊接的单元中提供增加的强度。 通常的工具销（未示出）用于在组装期间通过将销穿过特定工具孔（46）插入各个部件中来将零件堆叠成正确对准。 激光焊接用于各种组装级别，并且初始地制造基本模块子组件，附加的单个组件被固定到其上并被焊接到位。 所得到的单元是精密天线组件，重量轻且结构坚固，可以以非常低的制造成本构建。 开发和定位该单元的微波孔径特征，其特征关系保持非常精确的公差。

公开(公告)号：WO1990006594A1

公开(公告)日：1990-06-14

申请号：PCT/US1989004488

申请日：1989-10-12

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  FARB, Joseph, E.

IPC: H01L29/784

CPC classification number: H01L29/6659 ,  H01L21/823814 ,  H01L29/78 ,  Y10S148/053

Abstract: A process for forming MOS devices having graded source and drain regions. The source and drain regions are lightly doped by ion implantation and then subjected to thermal cycling to diffuse the implanted impurities. The source and drain regions are then heavily doped to form source and drain regions having a heavily doped subregion and a lightly doped subregion. Devices made pursuant to the process, which can be made than one-half micron, are not subject to gate oxide charging and have high snapback voltages.

公开(公告)号：WO1990006019A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004375

申请日：1989-10-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  ESTES, Earl, M., Jr.

IPC: H03K04/06

CPC classification number: H03K4/06

Abstract: A triangle wave generator (10) which is programmable, and which provides variable amplitude, frequency independent, triangle waves over a wide frequency bandwidth while employing a low voltage power source. The triangle wave generator (10) comprises a square wave input signal source (12) and a reference voltage signal source (14). A first amplifier (16) amplifies the square wave input signals and couples them by way of a transformer (34) to an integrator (36, 40) which generates triangle wave output signals in response thereto. A second amplifier (18) connected to the triangle wave signal and to the transformer coupled square wave current source for the purpose of providing a bootstrap. A third amplifier (20) samples and compares the triangle wave output signals to the reference voltage signals and generates output error signals in response thereto. A driver circuit (22) responds to the output error signals and provides bias voltage signals to the first amplifier (16) that controls the amplitude of the square wave output signals in proportion to the amplitude of the reference voltage signals. The triangle waves are controlled in a manner to cause their amplitude to be proportional to the amplitude of the reference voltage signals and independent of the frequency of the square wave input signals. The triangle wave generator (10) produces a 20 volt peak-to-peak amplitude triangle wave at frequencies greater than 300 KHz utilizing a conventional ±15 volt power supply source. A nonprogrammable, fixed frequency embodiment and a method of producing triangle wave signals are also disclosed.

公开(公告)号：WO1990005888A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004486

申请日：1989-10-12

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  SCHOTTER, Daniel, K.

IPC: F41G07/32

CPC classification number: G02B6/4478 ,  F41G7/32 ,  F42B15/04

Abstract: A fiberoptic leader (20) connected between a missile (10) and a launch tube is laid out upon missile launch with a controlled degree of bend in the fiberoptic filament (50), and is furthermore protected from blast effects in the launch. The fiberoptic filament (50) is stiffened within a leader (30) comprised of a Teflon R sleeve (52) insulating the fiberoptic filament (50). A protective sheathing of high tensile strength longitudinally wires (54) are disposed about and encase the Teflon R sleeve (52), and in turn are encased within an outer sleeve. The stiffened leader is led along the longitudinal length of a retainer (20) attached to the side of the missile. The retainer (20) is disposed upon a longitudinal portion of the missile in a channel. The stiffened leader (20) is laid against and under one of the retainer arms from the aft end of the missile (10), where the fiberoptic leader (30) is fed out during launch, to a forward end of the missile (10) and retainer (20). The leader (30) is then led across the width of the channel to the opposing arm of the channel. The stiffened leader (30) is then led partly aft along the opposing arm of the retainer (20) and then out to an open longitudinal slot defining the ends of the channel and is coupled to a fixed point within the launch tube from which point optical communications are provided to the missile (10) during flight. As the missile (10) is launched, the bend propagates down the retainer (20) tearing the stiffened leader from a longitudinally perforated tape which secures the leader (30) into and under one of the arms of the retainer (20).

公开(公告)号：WO1990002827A1

公开(公告)日：1990-03-22

申请号：PCT/US1989003264

申请日：1989-07-31

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  TUTT, Lee, W. ,  JENSEN, John, E.

IPC: C23C16/18

CPC classification number: C23C16/18 ,  C30B25/105 ,  C30B29/02

Abstract: High purity gold films are photochemically deposited on substrates from the gold containing compound (CH3)2Au[CH(COCF3)2]. A vapor of the gold containing organometallic compound, possibly mixed with a carrier gas, is flowed over the surface of the substrate, which is at 0 DEG C. to 160 DEG C., and preferably at ambient temperature. Photodissociation is induced with ultraviolet light, inasmuch as the organometallic compound is strongly absorbing in the range of from about 300 to 340 nanometers. Substantially no organic fragments are deposited upon the surface, so that the deposited gold film is of high purity.

公开(公告)号：WO1990002375A1

公开(公告)日：1990-03-08

申请号：PCT/US1989003528

申请日：1989-08-16

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  KIM, Sachol, E.

IPC: G06F11/22

CPC classification number: G06F11/2257 ,  Y10S706/911 ,  Y10S706/916

Abstract: The present invention is directed to an expert system (24) for diagnosing faults. The system comprises a knowledge base (32) containing information regarding a conceptual model of the equipment under diagnosis and information indicating normal operation of the equipment. The system also comprises an inference engine (28) for generating a set of symptom diagnostic rules from the information contained within the knowledge base in conjunction with user-generated inputs.

公开(公告)号：WO1990001749A2

公开(公告)日：1990-02-22

申请号：PCT/US1989002976

申请日：1989-07-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  LO, Thomas, K. ,  SACKS, Jack, M. ,  SIMONI, Wayne, P.

IPC: G06F15/70

CPC classification number: G06T7/254

Abstract: A conventional tracker (14) is used to continually aim a sensor (12) at a flying object so that it is located in substantially the same spatial location in a plurality of image frames taken at different times. Thus, the object remains in about the same spatial position in each image frame while the background clutter generally changes. By processing two or more of the image frames it is possible to calculate a more precise aimpoint for the object than is generally provided by the track point.

Abstract translation: 常规的跟踪器14用于将传感器12连续地瞄准飞行物体，使得其位于在不同时间拍摄的多个图像帧中的基本上相同的空间位置。 因此，当背景杂波通常改变时，对象保持在每个图像帧中大致相同的空间位置。 通过处理两个或更多个图像帧，可以计算比轨道点通常提供的物体更精确的瞄准点。

公开(公告)号：WO1990001744A1

公开(公告)日：1990-02-22

申请号：PCT/US1989002875

申请日：1989-07-03

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  LO, Thomas, K. ,  SACKS, Jack, M. ,  SIMONI, Wayne, P. ,  LEE, Leonard, A. ,  NGUYEN, Harrison ,  KARLIN, Lynne, M. ,  QUAN, Andy, L. ,  HOSOKAWA, Kazuo, R.

IPC: G06F15/336

CPC classification number: G06T7/20 ,  G06F17/153 ,  H04N19/43 ,  H04N19/51

Abstract: A method and apparatus for correlating two signals representing a live image and a reference image are disclosed. The reference signal is processed to provide a polarity bit and mask bit for each pixel position in the reference image. The processed video signal is stored in a memory (20) and used in a convolver and summer section (18) in which the polarity bits between the reference and live images are gated by gate (17) and are used in generating a correlation output from summer (23). However, the polarity bits do not affect the correlation output if the logical output from gate (19) is of a given state which occurs if the associated mask bits indicate that the gradient value at the particular pixel position does not exceed certain minimum threshold values.