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公开(公告)号：US5341423A
公开(公告)日：1994-08-23
申请号：US012088
申请日：1987-02-06
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H04K1/02
Abstract: A method and apparatus for masking the presence and content of data transmissions includes a mobile transmitter which encodes the data by means of a pseudorandom spreading (PRS) code having a chip rate, and which transmits it at a carrier frequency. A masking transmitter remote from the mobile transmitter encodes a carrier at the same frequency with a second PRS sequence having the same chip rate, and transmits it at a power level higher than the power level of the mobile transmitter. A signal interceptor cannot separate the mobile and masking station carriers on a frequency basis. The relatively low-power mobile station PRS signal is difficult to detect in the presence of the high-power masking station code. The intended receiver (master station) receives an ensemble signal which is principally masking station signal. The master station regenerates the known masking station PRS code and subtracts it from the ensemble signal to leave a residue signal which contains the data-bearing mobile station PRS signal. The data in the mobile station PRS signal is recovered in conventional manner by use of a regenerated mobile station PRS signal. The master station may also control the relative amplitudes of the carriers transmitted by the mobile and masking station, as well as their chip rates.
Abstract translation: 用于屏蔽数据传输的存在和内容的方法和装置包括移动发射机，其通过具有码片速率的伪随机扩展（PRS）码对数据进行编码，并以载波频率进行发送。 远离移动发射机的掩蔽发射机以相同频率对具有相同码片速率的第二PRS序列编码载波，并以高于移动发射机的功率电平的功率电平进行发射。 信号拦截器不能以频率为基础分离移动和掩蔽站载波。 在存在大功率掩蔽站代码的情况下，相对较低功率的移动站PRS信号难以检测。 预期的接收机（主站）接收主要是屏蔽站信号的整体信号。 主站重新生成已知的掩蔽站PRS码，并从集合信号中减去它，以留下包含承载移动台PRS信号的残留信号。 通过使用再生的移动站PRS信号，以常规方式恢复移动站PRS信号中的数据。 主站还可以控制由移动和掩蔽站发送的载波的相对振幅以及它们的码片速率。
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公开(公告)号：US4833478A
公开(公告)日：1989-05-23
申请号：US560218
申请日：1983-12-12
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
Abstract: An automatic direction finder antenna array having a plurality of pairs of oppositely positioned antenna elements arranged radially from a common center with each pair forming a cardioid radiation pattern when energized. Switching apparatus energizes successive antenna pairs to produce a rotating cardioid pattern but with the cardioid being switched back and forth 180.degree. at a higher switching frequency when each pair of antennas is energized during the rotating function. The antenna AX whose output bears the lowest ratio R to the output of its oppositely positioned antenna is determined as well as the antenna AZ having the largest output signal VZ. The precise angle of reception of a received signal is then determined from AX, AZ, and R.
Abstract translation: 一种自动取向器天线阵列，其具有多个相对定位的天线元件对，所述多个相对定位的天线元件从公共中心径向布置，每对形成激励时形成心形辐射图。 开关装置激励连续的天线对以产生旋转的心形图案，但是当旋转功能中的每对天线被激励时，心形体以更高的开关频率来回切换180度。 确定其输出具有与其相对定位的天线的输出的最低比率R的天线AX以及具有最大输出信号VZ的天线AZ。 然后从AX，AZ和R确定接收信号的精确接收角度。
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公开(公告)号：US5392450A
公开(公告)日：1995-02-21
申请号：US818268
申请日：1992-01-08
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H04B7/2123
Abstract: A multiple channel demand assignment multiple access (DAMA) system is configured as a spoke-and-hub star network in which a satellite relays information between each of many small-aperture terminals (SATs), which may be portable terminals (PTs), and a hub network control terminal (NCT) which receives requests from the PTs, allocates channel resources, and broadcasts housekeeping messages. The system has a reservation protocol using at least three separate data channels to take advantage of the inherent lack of adequate radiated power at the PTs: a NCT outbound channel is tightly packed with data, without guard spaces, and it uses typically 98% of the allocated power; separate return channels for data and reservations use little satellite power, with no need for extremely tight data packing. Guard spaces are included in the reservation channel to overcome the total range of propagation delay uncertainty without requiring knowledge of the location of a particular PT.
Abstract translation: 多信道需求分配多址（DAMA）系统被配置为辐射和轮毂星形网络，其中卫星在许多小孔径终端（SAT）中的每一个之间中继信息，其可以是便携式终端（PT），以及 接收来自PT的请求的集线器网络控制终端（NCT），分配信道资源和广播家务消息。 该系统具有使用至少三个单独的数据信道的预留协议，以利用在PT处固有的足够辐射功率的缺点：NCT出站信道紧密地封装有数据，没有保护空间，并且通常使用98％的 分配电力 数据和预留的单独返回通道使用少量卫星电源，无需非常紧密的数据打包。 保留空间被包括在预留信道中以克服传播延迟不确定性的总范围，而不需要知道特定PT的位置。
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公开(公告)号：US4704574A
公开(公告)日：1987-11-03
申请号：US900525
申请日：1986-08-26
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: G01R25/08
Abstract: An arrangement for coarse and vernier measuring of the delay or phase shift introduced by a delay path by generating a recurrent pseudorandom signal at an original chip clock rate derived from a reference clock. At the receiving end of the delay path, a delay locked loop regenerates the chip clock and the pseudorandom signal at a phase established by the delay. The coarse count is measured by the number of chip clock cycles. The vernier delay is measured in terms of a fractional portion of a chip clock cycle. The vernier measurement is made by starting a counter which counts reference clock signals in response to a coincidence of the original chip clock and the reference clock, and by ending counting and latching the count in response to coincidence of the regenerated chip clock and the reference clock.
Abstract translation: 用于通过以从参考时钟导出的原始码片时钟速率产生经常性的伪随机信号来延迟由延迟路径引入的延迟或相移的粗略和游标的布置。 在延迟路径的接收端，延迟锁定环路以延迟建立的相位重新生成芯片时钟和伪随机信号。 粗计数通过芯片时钟周期数来测量。 游标延迟以芯片时钟周期的小数部分来测量。 游标测量是通过启动计数器来计算参考时钟信号，以响应于原始芯片时钟和参考时钟的一致，并且通过结束计数和锁存计数以响应再生的芯片时钟与参考时钟的一致 。
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公开(公告)号：US4628286A
公开(公告)日：1986-12-09
申请号：US724310
申请日：1985-04-17
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H04L27/2014
Abstract: An MSK modulator includes a source of digital sawtooth signals having a recurrence rate equal to the desired recurrence rate of the unmodulated carrier. The digital sawtooth signal is applied to an adder together with a phase control digital signal. The phase control digital signal phase-shifts the digital sawtooth signal. The phase-shifted digital sawtooth signal is applied to a sine ROM to produce a digital sinusoid with an unmodulated recurrence rate equal to the recurrent rate of the digital sawtooth signal. When the phase control signal is an accumulated signal, the digital sinusoid is frequency-modulated. The phase control signal for MSK modulation is a ramp signal generated by a controlled accumulator. The accumulator includes a controllable clocked adder/subtractor, the output of which is coupled by way of a register back to an input. The other input of the adder/subtractor is coupled to receive a fixed ramp rate controlling word. At each clock cycle, the accumulator adds (subtracts) the ramp rate word from the sum under the control of the MARK (SPACE) information content of the information signal to form a two-frequency MSK modulation. More general frequency modulation is accomplished by an accumulator with an input word which responds to the instantaneous amplitude of the information signal. A clocked delay and a subtractor indicate the direction of frequency deviation.
Abstract translation: MSK调制器包括具有等于未调制载波的期望再现速率的复现速率的数字锯齿波信号源。 数字锯齿波信号与相位控制数字信号一起施加到加法器。 相位控制数字信号相移数字锯齿波信号。 相移的数字锯齿波信号被施加到正弦ROM以产生具有等于数字锯齿波信号的复现速率的未调制复现速率的数字正弦波。 当相位控制信号为累加信号时，数字正弦波被调频。 用于MSK调制的相位控制信号是由受控累加器产生的斜坡信号。 累加器包括可控时钟加法器/减法器，其输出通过寄存器耦合到输入。 加法器/减法器的另一个输入端被耦合以接收固定的斜坡率控制字。 在每个时钟周期，累加器在信息信号的MARK（SPACE）信息内容的控制下，从总和中增加（减去）斜率，从而形成双频MSK调制。 更一般的频率调制由具有对信息信号的瞬时幅度作出响应的输入字的累加器来实现。 时钟延迟和减法器指示频率偏差的方向。
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Patent Agency Ranking
公开(公告)号：US4306308A
公开(公告)日：1981-12-15
申请号：US94280
申请日：1979-11-14
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H04L27/26
Abstract: A data communications system for transmitting and receiving 64 different audio-frequency signals representing 64 respective alpha-numeric code symbols. A synchronizing signal consists of three time-spaced bursts where each burst consists of three audio-frequency signals. A following information signal consists of a three time-spaced message bursts where each burst consists of twenty audio-frequency signals, all three of the message bursts containing the same audio-frequency signals but in different orders. A receiver includes synchronizer means to recognize the predetermined synchronizing signal, and decoder means enabled and synchronized by the synchronizer means to decode the information signal. The audio-frequency signals may be 64 different fixed-frequency tones, or may be 64 differently-changing signals such as may be produced by unidirectional phase shift keying by 64 different pseudo-random number codes.
Abstract translation: 一种数据通信系统，用于发送和接收表示64个相应字母数字代码符号的64个不同音频信号。 同步信号由三个时间间隔的脉冲组成，其中每个脉冲串由三个音频信号组成。 以下信息信号由三个时间间隔消息突发组成，其中每个脉冲串由二十个音频信号组成，所有三个消息脉冲串包含相同的音频信号，但是以不同的顺序。 接收机包括识别预定同步信号的同步器装置，以及由同步装置启用和同步的解码装置，以对信息信号进行解码。 音频信号可以是64个不同的固定频率音调，或者可以是64个不同程度变化的信号，例如可以通过64个不同的伪随机数码的单向相移键控产生。
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公开(公告)号：US4144579A
公开(公告)日：1979-03-13
申请号：US818715
申请日：1977-07-25
Applicant: Edward J. Nossen , Eugene R. Starner
Inventor： Edward J. Nossen , Eugene R. Starner
Abstract: Arithmetic synthesizer having an output circuit that provides a linear phase output signal. A ramp generator controlled by the stepped output signal from the arithmetic synthesizer interpolates the value of the signal slope between steps to supply a phase output having low noise, i.e., reduced time jitter.
Abstract translation: 具有提供线性相位输出信号的输出电路的算术合成器。 通过来自算术合成器的阶梯式输出信号控制的斜坡发生器对步进之间的信号斜率的值进行插值，以提供具有低噪声的相位输出，即减小的时间抖动。
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公开(公告)号：US4710944A
公开(公告)日：1987-12-01
申请号：US920218
申请日：1986-10-17
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H04B7/0608 , H04B7/0802 , H04L1/06
Abstract: A transmit/receive space diversity system communicates between transmitter-receivers at two separate sites. Each site has at least two antennas. Each antenna at a first one of the sites transmits a pilot signal, at differing frequencies. At the second or other site, all the pilot signals are received by each antenna, and the pilot signals are evaluated to determine which pilot-signal-receiving antenna is part of the lowest loss path between the sites. A data source at the second site is routed to the identified antenna for transmission of data signals back to the first site. At the first site, the data signals are received by all the antennas, and the best of the received data signals is routed to utilization apparatus. A data signal from the first site is transmitted to the second site, at which it is received by the selected antenna.
Abstract translation: 发送/接收空间分集系统在两个不同站点的发射机 - 接收机之间进行通信。 每个站点至少有两个天线。 在第一个站点的每个天线以不同的频率发送导频信号。 在第二或其他站点，由每个天线接收所有导频信号，并对导频信号进行评估，以确定哪个导频信号接收天线是站点之间最低损耗路径的一部分。 将第二站点处的数据源路由到所识别的天线，以将数据信号传送回第一站点。 在第一站点，数据信号被所有天线接收，并且最好的接收到的数据信号被路由到利用装置。 来自第一站点的数据信号被发送到第二站点，在该位置处由所选择的天线接收。
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公开(公告)号：US4669091A
公开(公告)日：1987-05-26
申请号：US827740
申请日：1986-02-10
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H04L1/20 , H04B1/713 , H04B1/715 , H04B17/0087 , H04B7/005
Abstract: A communication system transmits information which may be in the form of frames or bursts of suppressed-carrier data over a dispersive transmission path which introduces multipath distortion. Each frame is stored as it is received and processed by iteratively simulating the multipath distortion, subtracting the distortion from the stored frame to form a corrected signal, and evaluating the quality of the resulting signal. The quality of the resulting signal is determined by frequency multiplying the corrected signal and evaluating the total power of components other than the frequency multiplied carriers. The iterative procedure adjusts the phase and, if deisred, the amplitude of signals tapped from a delay line.
Abstract translation: 通信系统通过引入多路径失真的色散传输路径发送可能为帧或突发的抑制载波数据的信息。 通过迭代地模拟多路径失真，从存储的帧中减去失真以形成校正的信号，并评估所得到的信号的质量，每个帧被存储。 所得到的信号的质量通过对校正的信号进行倍频并且评估除倍频载波之外的分量的总功率来确定。 迭代过程调整相位，如果不确定，则从延迟线中抽出的信号的幅度调整。
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公开(公告)号：US4584541A
公开(公告)日：1986-04-22
申请号：US687546
申请日：1984-12-28
Applicant: Edward J. Nossen
Inventor： Edward J. Nossen
CPC classification number: H03C3/00 , H03C1/00 , H03F1/0294 , H03B2201/0291 , H03C1/50 , H03C2200/0029 , H03C5/00
Abstract: A phase modulator includes a digital frequency word generator, an adder and a register arranged to generate recurrent digital sawtooth signals at a carrier rate. A second digital adder is coupled to receive the sawtooth signals and also receives digital information signals. The adder produces recurrent digital sawtooth signals phase-modulated by the information signal. A pair of adders receive the digital sawtooth signals and mutually sign-reversed digital information signals to produce a pair of oppositely phase-modulated constant-amplitude signals in a pair of channels. A sine memory is addressed by the phase-modulated digital sawtooth signals to produce phase-modulated sinusoidal-representative digital signals. The digital signals are then converted to analog signals. Since the two channels contain signals which are phase-modulated but not amplitude-modulated, the signals may be amplified by nonlinear amplifiers. An adder is coupled to the outputs of the two channels to sum together the two phase-modulated signals to produce an amplitude-modulated signal. Combinations of amplitude and phase modulation may be generated by a combined structure.
Abstract translation: 一个相位调制器包括一个数字频率字发生器，一个加法器和一个寄存器，被布置为以载波速率产生复现数字锯齿波信号。 第二数字加法器被耦合以接收锯齿波信号并且还接收数字信息信号。 加法器产生由信息信号相位调制的反复数字锯齿波信号。 一对加法器接收数字锯齿信号和相互反转的数字信息信号，以在一对通道中产生一对相位相位调制的恒定幅度信号。 正弦存储器由相位调制的数字锯齿波信号解决，以产生相位调制的正弦代表性数字信号。 然后将数字信号转换为模拟信号。 由于两个通道包含相位调制但没有幅度调制的信号，因此信号可以被非线性放大器放大。 加法器耦合到两个通道的输出，以将两个相位调制信号相加在一起以产生幅度调制信号。 可以通过组合结构产生振幅和相位调制的组合。
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