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公开(公告)号：US4475166A
公开(公告)日：1984-10-02
申请号：US362171
申请日：1982-03-25
申请人： Stephen N. Cope
发明人： Stephen N. Cope
CPC分类号： G06F17/10
摘要： The invention enables a logarithmic plot to be generated for values pertaining to uniformly spaced sampling points of a frequency axis, for example, such as the values provided by a discrete Fourier transform processor, while utilizing a conventional display device with a linear time base. To this end the array of input values provided by the processor is converted in a further processor to values corresponding to points uniformly spaced along a logarithmic frequency axis. If points on the logarithmic and linear axis are indexed by values x and y respectively, the y values (in general non integral) corresponding to x-1/2 and x+1/2 are calculated, the corresponding integral values of y are ascertained and the output value corresponding to x is formed as a weighted sum of the input values for these two integral y values and any intervening integral y values. The display is obtained by addressing the output values synchronously with the time base through an address circuit 17 and converting the values in a digital to analog converter 14 before application to the Y input of the display device 15.
摘要翻译： 本发明使得可以对利用具有线性时基的常规显示装置的频率轴的均匀间隔采样点的值（例如由离散付里叶变换处理器提供的值）产生对数曲线。 为此，由处理器提供的输入值阵列在另一个处理器中被转换成对应于沿着对数频率轴均匀间隔的点的值。 如果对数和线性轴上的点分别用x和y来索引，则计算对应于x-1/2和x + 1/2的y值（通常为非积分），确定y的对应积分值 并且对应于x的输出值形成为这两个积分y值和任何中间积分y值的输入值的加权和。 通过地址电路17与时基同步地寻址输出值，并在应用于显示装置15的Y输入之前将数模转换器14中的值转换成数字显示。
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公开(公告)号：US4246705A
公开(公告)日：1981-01-27
申请号：US74208
申请日：1979-09-10
申请人： Derek J. Lee
发明人： Derek J. Lee
摘要： For initial alignment of a simulator laser-projector with a weapon, the weapon is boresighted on a target, the projector is fitted and the laser beam is scanned stepwise across the target successively along orthogonal axes. The range of steps on each axis for which a return from the target occurs is sensed, and the step corresponding to the median of all the returns taken as the position for which the laser beam is centered on the target. These calculated positions are stored and used as the reference positions during simulated firing of the weapon. The detection of the position of a target for hit/miss determination is achieved with the same scanning and median selection procedure.
摘要翻译： 为了模拟激光投影仪与武器的初始对准，武器在目标上被瞄准，投影仪被安装，并且激光束沿着正交轴依次逐步扫描目标。 感测到从目标发生返回的每个轴上的步长范围，并且对应于作为激光束以目标为中心的位置的所有返回的中值的步长。 这些计算的位置在武器的模拟射击期间被存储并用作参考位置。 使用相同的扫描和中值选择程序来实现用于命中/未命中确定的目标的位置的检测。
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公开(公告)号：US4166963A
公开(公告)日：1979-09-04
申请号：US835257
申请日：1977-09-21
申请人： Eric Metcalf
发明人： Eric Metcalf
IPC分类号： H03K19/0175 , H03K5/00
CPC分类号： H03K19/017545
摘要： A line buffer circuit for coupling an interface to a data highway without requiring separate signal paths for sense and drive functions, comprises a unity-gain voltage amplifier coupling a line in the highway to the respective interface terminal for the sense function, and a current source connected to sink current from the highway line to ground for the drive function. The current source is controlled so that the current passing through it is proportional to the magnitude of the current passing from the amplifier through the interface terminal.
摘要翻译： 一种用于将接口耦合到数据高速公路而不需要用于感测和驱动功能的单独的信号路径的线路缓冲器电路，包括将公路中的线路耦合到用于感测功能的相应接口端子的单位增益电压放大器，以及电流源 连接到电流从公路线到地面的驱动功能。 控制电流源，使得通过它的电流与从放大器通过接口端子的电流的大小成比例。
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公开(公告)号：USRE28833E
公开(公告)日：1976-05-25
申请号：US580402
申请日：1975-05-23
申请人： Howard Anthony Dorey
发明人： Howard Anthony Dorey
IPC分类号： G01R19/255 , H03M1/00
CPC分类号： G01R19/255 , H03M1/64 , H03M1/54
摘要： In an analogue to digital converter the unknown voltage is applied continuously to an integrating circuit during each conversion period. An opposing reference voltage is switched on and off to cause the amplifier output to ramp up and down between two detection levels. One or both of these levels varies as a periodic function of time, e.g. a sawtooth waveform. Clock pulses are counted when the slope of the output ramp is of one sign only and it is shown that the ratio of the unknown voltage to the reference voltage is simply related to the number of clock pulses actually counted when the slope is of said one sign and the total number of clock pulses occurring during the conversion period.
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公开(公告)号：USRE28706E
公开(公告)日：1976-02-03
申请号：US580401
申请日：1975-05-23
申请人： Howard Anthony Dorey
发明人： Howard Anthony Dorey
IPC分类号： H03M1/00
CPC分类号： H03M1/52
摘要： A ramp type analogue to digital converter including an integrating circuit the output of which is first set to a level dependent upon the magnitude of an analogue input voltage to be converted. A reference signal is then applied to ramp down the integrator output level to a datum level and the conversion is effected by counting clock pulses while the integrator output is ramping down to datum level. The magnitude of the reference signal and the numerical weighting of the clock pulses being counted are scaled down by a common factor when the ramp reaches a value close to the datum level so that the slope of the ram is reduced and the resolution of conversion is increased as it approaches datum. Thus, compared with a ramp type digital voltmeter having a constant slope discharge ramp and a given resolution, the discharge time is reduced for the same resolution of conversions.
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公开(公告)号：US4421484A
公开(公告)日：1983-12-20
申请号：US130810
申请日：1980-03-17
摘要： Digital simulation apparatus, e.g. a digital coastline generator, for simulating a terrain-representative display of the kind produced by a movable scanning-type display device, e.g. a radar display device, comprises a main store for storing digital data representative, in Cartesian co-ordinate form, of terrain features such as contours and buildings in an area, known as the playing area, typically 256 nautical miles by 256 nautical miles. The data is divided into groups relating to contiguous zones each typically 2 nautical miles by 2 nautical miles. The apparatus further comprises means for producing a signal representative of the current position of the display device in the playing area, means for producing successive signals representative of successive segments of scan of the display device, and means responsive to these signals to select from the main store those groups of data corresponding to zones intersected by the current scan segment. The selected groups of data are applied to co-ordinate conversion means which converts them into polar co-ordinate form, in which form they are then used to generate the simulated display. The selection process greatly reduces the computational burden of the co-ordinate conversion means.
摘要翻译： 数字模拟装置，例如 数字海岸线发生器，用于模拟由可移动扫描型显示装置产生的种类的地形代表性显示。 雷达显示设备包括一个主存储器，用于存储以笛卡尔坐标形式表示的数字数据，诸如通常为256海里256海里的称为游戏区域的轮廓和建筑物的地形特征。 数据分为与通常2海里2海里的连续区域相关的组。 所述装置还包括用于产生表示所述显示装置在所述播放区域中的当前位置的信号的装置，用于产生代表所述显示装置的连续扫描段的连续信号的装置，以及响应于所述信号从所述主体中选择的装置 存储与当前扫描段相交的区域对应的数据组。 所选择的数据组被应用于坐标转换装置，其将它们转换成极坐标形式，然后以这些形式将它们用于生成模拟显示。 选择过程大大降低了坐标转换装置的计算负担。
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公开(公告)号：US4317650A
公开(公告)日：1982-03-02
申请号：US74207
申请日：1979-09-10
IPC分类号： F41G3/26
CPC分类号： F41G3/265
摘要： In order to incorporate minor perturbations in the simulated operation of a weapon (to simulate dispersion between batches of ammunition or individual rounds, and/or the effects of changing environmental phenomena), a variable is generated at a rate related to the type of ammunition to be simulated. For ammunition exhibiting a high degree of dispersion between rounds, the variable changes rapidly and an accurately-aimed shot is deemed a hit only if the value of the variable at that instant is less than the predetermined probability of a hit with that ammunition. In the case of ammunition exhibiting some consistency between rounds but not between batches, the variable changes slowly, and its value controls the extent of a displacement applied to a laser projector before the projector is energised and scanned for a hit/miss determination.
摘要翻译： 为了在武器的模拟操作中引入轻微的扰动（模拟弹药或单轮之间的分散和/或变化的环境现象的影响），以与弹药类型相关的速率产生变量 模拟。 对于在回合之间表现出高度分散的弹药，变量迅速变化，并且只有当该瞬间的变量的值小于用该弹药命中的预定概率时，准确瞄准的射击才被认为是命中的。 在弹药表现出一定程度的弹药而不是批次之间的情况下，变量缓慢变化，其值控制在投影机通电并扫描命中/未命中确定之前应用于激光投影仪的位移程度。
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公开(公告)号：US4253249A
公开(公告)日：1981-03-03
申请号：US73418
申请日：1979-09-07
IPC分类号： F41G3/26
CPC分类号： F41G3/2655
摘要： The effects of any errors in the preliminary tracking of a target, and of any subsequent changes in the velocity of the target, are included in simulated firing of a gun 3, by slewing a laser projector 2 in the simulator for the predicted shell time-of-flight at the rate assessed during the preliminary tracking and then scanning with the laser for hit/miss determination. The slewing is achieved either by having the gun control system slew at the required rate, or by having the gunner continue tracking the target, corrections for deviations from the required rate being automatically applied to the projector.
摘要翻译： 在目标的初步跟踪中的任何误差的影响以及目标的速度的任何随后的变化都包括在枪3的模拟射击中，通过将激光投射仪2旋转到模拟器中用于预测的壳时间 - 在初步跟踪期间评估的速率，然后用激光扫描命中/错误确定。 回转可以通过使喷枪控制系统以所需速度旋转，或通过使炮手继续跟踪目标，校正偏离所要求的速率被自动应用于投影机。
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公开(公告)号：US4178804A
公开(公告)日：1979-12-18
申请号：US929396
申请日：1978-07-31
申请人： Peter N. Potter
发明人： Peter N. Potter
CPC分类号： G01L9/0026
摘要： A pressure transducer comprises two similar resonantly vibratable cylinders, one disposed coaxially inside the other and each having its own resonant vibration excitation system. A pressure P1 is applied to the inside of the inner cylinder and to the outside of the outer cylinder, while a pressure P2 is applied between the cylinders, whereby the difference in the respective vibration frequencies of the cylinders is dependent on the pressure difference P1-P2. Either P1 or P2 can be a reference pressure, e.g., a vacuum for an absolute pressure version of the transducer. Alternatively, either P1 or P2 can be atmospheric pressure, so that the transducer operates as a gauge pressure transducer.
摘要翻译： 压力传感器包括两个类似的可共振振动的气缸，一个同轴地设置在另一个内并且每个都具有自己的共振振动激励系统。 压力P1被施加到内筒的内部和外筒的外侧，同时在缸之间施加压力P2，由此气缸的各个振动频率的差取决于压差P1- P2。 P1或P2可以是参考压力，例如用于绝对压力型换能器的真空。 或者，P1或P2可以是大气压力，使得换能器作为表压传感器工作。
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公开(公告)号：US4100420A
公开(公告)日：1978-07-11
申请号：US763253
申请日：1977-01-26
申请人： Eric Metcalf , Anthony John Ley
发明人： Eric Metcalf , Anthony John Ley
摘要： A displacement transducer comprises a charge coupled device having a plurality of light sensitive stages arranged in a line. An obturating member connected to a member whose displacement is to be transduced is disposed between the charge coupled device and a light source. As the obturating member is moved, it varies the amount of light received by the respective stages of the charge coupled device, so that the charge distribution in the charge coupled device is representative of the position of the obturating member and therefore of the member whose displacement is to be transduced.
摘要翻译： 位移传感器包括具有布置成一行的多个光敏级的电荷耦合器件。 与电容耦合器件和光源之间设置连接到位移要被转换的部件的闭塞部件。 当闭塞构件移动时，其改变由电荷耦合装置的各个级接收的光量，使得电荷耦合装置中的电荷分布代表封闭构件的位置，因此代表位移 将被转导
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