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1. 发明授权

US06522243B1 Geometric harmonic modulation signaling and detection 有权
标题翻译：几何谐波调制信号和检测
公开(公告)号：US06522243B1
公开(公告)日：2003-02-18
申请号：US09892358
申请日：2001-06-28
申请人： Gary Jude Saulnier , Ralph Thomas Hoctor , John Erik Hershey , Richard Charles Gaus, Jr.
发明人： Gary Jude Saulnier , Ralph Thomas Hoctor , John Erik Hershey , Richard Charles Gaus, Jr.
IPC分类号： H04M1104
CPC分类号： H04B3/542 , H04B2203/5416 , H04L12/2803 , H04L2012/2843
摘要： A communication system includes a transmitter configured to pulse shape a GHM signal to confine the frequency spectrum of the GHM signal within a predefined frequency range. A receiver is also included that receives the transmitted GHM signal. The receiver includes a processor for maximizing the GHM signal to noise ratio and minimizing the bit error rate. The GHM signals are also synchronized to establish a relative time for correct interpretation of bit positions.
摘要翻译：通信系统包括：发射机，被配置为脉冲形成GHM信号，以将GHM信号的频谱限制在预定义的频率范围内。还包括接收发送的GHM信号的接收机。接收机包括用于使GHM信噪比最大化并使误码率最小化的处理器。 GHM信号也被同步，以建立相对时间来正确解释位位置。

2. 发明授权

US6101214A Power line communications spread spectrum symbol timing and random phasing 失效
标题翻译：电力线通信扩频符号定时和随机定相
公开(公告)号：US6101214A
公开(公告)日：2000-08-08
申请号：US845867
申请日：1997-04-28
申请人： John Erik Hershey , Gary Jude Saulnier , Richard August Korkosz , Kenneth Brakeley Welles, II , Richard Charles Gaus, Jr.
发明人： John Erik Hershey , Gary Jude Saulnier , Richard August Korkosz , Kenneth Brakeley Welles, II , Richard Charles Gaus, Jr.
IPC分类号： H04B1/69 , H04B3/54 , H04B15/00 , H04K1/00 , H04L27/30 , H04M11/04
CPC分类号： H04B1/69 , H04B3/54 , H04B2203/5416
摘要： A system for spread spectrum power line communications employs a harmonic modulation (HM) transmitter coupled to the power line for transmitting message bits to an HM receiver. The spread spectrum accommodates a plurality of HM transmitters simultaneously occupying the same bandwidth. The spectrum of HM, in a frequency range above 60 Hz but below the maximum frequency that will carry through a distribution transformer, is ideal in combating carrier synchronous noise since it can be interleaved with the noise harmonics and therefore be effectively spectrally disjoint with the synchronous noise process spectrum.
摘要翻译：用于扩频电力线通信的系统采用耦合到电力线的谐波调制（HM）发射机，用于向HM接收机发送消息比特。扩展频谱容纳多个同时占据相同带宽的HM发射机。在频率范围高于60Hz但低于将通过配电变压器进行的最大频率的HM的频谱是对付载波同步噪声的理想选择，因为它可以与噪声谐波进行交织，并且因此与同步信号有效地频谱分离噪声过程谱。

3. 发明授权

US5867489A Method and apparatus for TDMA slot synchronization with precision ranging 失效
标题翻译：用于具有精确测距的TDMA时隙同步的方法和装置
公开(公告)号：US5867489A
公开(公告)日：1999-02-02
申请号：US691964
申请日：1996-08-05
申请人： John Erik Hershey , Gary Jude Saulnier , Stephen Michael Hladik , Richard Charles Gaus, Jr. , Wayne Curtis Taft , Richard August Korkosz , Glen William Brooksby
发明人： John Erik Hershey , Gary Jude Saulnier , Stephen Michael Hladik , Richard Charles Gaus, Jr. , Wayne Curtis Taft , Richard August Korkosz , Glen William Brooksby
IPC分类号： G01S5/14 , G01S19/05 , G01S19/11 , G01S19/21 , G01S19/29 , G01S19/46 , H04B7/212 , H04J3/06 , H04J3/16
CPC分类号： H04B7/2125 , H04J3/0605 , G01S5/14
摘要： In a time division multiple access spacecraft communication system, each ground station determines when to send its information packets to arrive at the spacecraft at the beginning of a time slot. The calculation is based upon knowledge of the location of the spacecraft. A master ground station determines the location of the spacecraft by the use of the propagation delays between the various ground stations (including itself) and the spacecraft, together with knowledge of the locations of the ground stations. The spacecraft location is then transmitted back to the various ground stations. The determination of propagation delay by each ground station is performed in two major steps. The first step determines coarse time delay to within one bit interval by repeatedly transmitting a multibit unique word to the spacecraft, and counting bits until the next unique word is received from the spacecraft. To determine fine propagation delay, a high-frequency clock signal is counted from the time of transmission of each bit edge until the reception of the next bit edge. The sum of the coarse and fine delays, together with a plurality of frame intervals, establishes the range to the spacecraft.
摘要翻译：在时分多址航天器通信系统中，每个地面站确定在时隙开始时何时发送其信息分组到达航天器。计算基于对航天器位置的了解。主地面站通过使用各种地面站（包括其自身）和航天器之间的传播延迟以及地面站位置的知识来确定航天器的位置。然后将航天器的位置传送回各个地面站。每个地面站的传播延迟的确定在两个主要步骤中进行。第一步通过向航天器重复发送多位唯一字，并计数位，直到从航天器接收到下一个唯一字，确定在一个位间隔内的粗略时间延迟。为了确定精细的传播延迟，从每个位边沿的传输时间直到下一个位边沿的接收来计数高频时钟信号。粗略和精细延迟的总和以及多个帧间隔建立了航天器的范围。

4. 发明授权

US5844949A Power line communication system 失效
标题翻译：电力线通信系统
公开(公告)号：US5844949A
公开(公告)日：1998-12-01
申请号：US728020
申请日：1996-10-09
申请人： John Erik Hershey , Richard August Korkosz , Gary Jude Saulnier , Richard Charles Gaus, Jr. , Kenneth Brakeley Welles, II
发明人： John Erik Hershey , Richard August Korkosz , Gary Jude Saulnier , Richard Charles Gaus, Jr. , Kenneth Brakeley Welles, II
IPC分类号： H04B3/54 , H04L1/04 , H04L5/06 , H04B1/10 , H03D1/04 , H04L25/08
CPC分类号： H04L1/04 , H04B3/54 , H04L5/06 , H04B2203/5416 , H04B2203/5495
摘要： A system for communicating digital information over wires having a great deal of harmonic distortion, such as a power line, employs a transmitter which transmitter which creates a carrier wave for each of a plurality of signals to be sent. This carrier wave has frequency lobes positioned between the frequency lobes of the harmonic distortion. Each of the lobes of a single carrier signal is encoded with the same bit value during a given bit period. This signal is then mixed with any existing signal on the wire. At a remote receiver coupled to the wires, the signal is sensed, filtered, and Fourier transformed into coefficients. The signal-to-noise (S/N) ratio of each Fourier coefficient is determined by a novel S/N estimation technique. The coefficients are weighted based upon the S/N ratio estimation, and decoded, preferably by an inner product of the weighted Fourier coefficients. Additionally, the S/N ratio estimates could be time averaged before being used in the weighting and bit decoding.
摘要翻译：用于通过诸如电力线等大量谐波失真的电线传送数字信息的系统采用发射机，发射机为要发送的多个信号中的每一个产生载波。该载波具有位于谐波失真的频率瓣之间的频率瓣。在给定的位周期期间，单个载波信号的每个波瓣以相同的比特值进行编码。然后将该信号与电线上的任何现有信号混合。在耦合到导线的远程接收器处，信号被感测，滤波和傅里叶变换成系数。每个傅立叶系数的信噪比（S / N）通过新的S / N估计技术来确定。基于S / N比估计对系数进行加权，优选地通过加权傅里叶系数的内积来解码。此外，在加权和比特解码之前，S / N比估计可以是时间平均的。

5. 发明授权

US5828335A Spacecraft communication channel power control system 失效
标题翻译：航天通信通道功率控制系统
公开(公告)号：US5828335A
公开(公告)日：1998-10-27
申请号：US554131
申请日：1995-11-06
申请人： Naofal Mohammed Wassel Al-Dhahir , John Erik Hershey , Gary Jude Saulnier
发明人： Naofal Mohammed Wassel Al-Dhahir , John Erik Hershey , Gary Jude Saulnier
IPC分类号： H04B7/185
CPC分类号： H04B7/18543
摘要： A control system for the uplink transmitter of a ground station communicating with a spacecraft includes an antenna located at the ground station, pointed toward the spacecraft for receiving downlink signals transmitted therefrom. The received signals are accompanied by noise attributable to ambient, sky and ground temperatures. A low-noise receiver is coupled to the output port of the antenna, for establishing the receiver noise temperature. A processor is coupled to the low-noise receiver apparatus and to the power control input port of the uplink transmitter, for responding to changes in the received noise power attributable to the presence or absence of precipitation in the downlink. The processor does this by producing an estimate of the attenuation attributable to the rain in the downlink, and generates the control signal in response to the estimate of the attenuation. The control signal increases the signal power of the uplink transmitter in response to increases in the estimate of the rain attenuation, and decreases the signal power of the uplink transmitter in response to decreases in the estimate of the rain attenuation. The processor determines the downlink rain attenuation L.sub.a,D by L.sub.a,D f(.DELTA.N.sub.R)=T.sub.eff /(1+T.sub.eff -.DELTA.N.sub.R) where T.sub.eff =(T.sub.amb -T.sub.sky)/(T.sub.LNA +T.sub.g +T.sub.sky)
摘要翻译：用于与航天器通信的地面站的上行链路发射机的控制系统包括位于地面站的天线，指向航天器，用于接收从其发射的下行链路信号。收到的信号伴随着环境，天空和地面温度的噪音。低噪声接收器耦合到天线的输出端口，用于建立接收机噪声温度。处理器耦合到低噪声接收机设备和上行链路发射机的功率控制输入端口，以响应归因于下行链路中是否存在降水的接收噪声功率的变化。处理器通过产生归因于下行链路中的雨的衰减的估计来做到这一点，并且响应于衰减的估计而产生控制信号。控制信号响应于雨衰的估计的增加而增加上行链路发射机的信号功率，并且响应于雨衰的估计的减小而降低上行链路发射机的信号功率。处理器确定下行链路衰减衰减La，D byLa，D + Z f（DELTA NR）= Teff /（1 + Teff-DELTA NR）其中Teff =（Tamb-Tsky）/（TLNA + Tg + Tsky）

6. 发明授权

US06668012B1 Identification of an identifiable code sequence in a received signal by correlation with summed different-phase replicas of the sequence 失效
标题翻译：通过与序列的相加不相位复制相关来识别接收信号中的可识别码序列
公开(公告)号：US06668012B1
公开(公告)日：2003-12-23
申请号：US09353655
申请日：1999-07-15
申请人： John Erik Hershey , Richard August Korkosz , Gary Jude Saulnier , Naofal Mohammed Wassel Al-Dhahir
发明人： John Erik Hershey , Richard August Korkosz , Gary Jude Saulnier , Naofal Mohammed Wassel Al-Dhahir
IPC分类号： H04L2730
CPC分类号： H04B1/70753 , H04B1/7077
摘要： A receiver for a unique word sequence or a spreading code sequence includes a memory which is preloaded with all possible phases of the code. The sequence in the received signal is correlated, in parallel, with sums of various ones of the different phases of the code. Thus, the received code is correlated with all possible phases of a replica of its own code. Consequently, one of the sums will exhibit a correlation peak, which indicates that the desired phase of the code is included in that particular sum. The other sums will not exhibit a correlation peak, and are is discarded. The different phases in the one sum which displayed correlation are divided into new sums, each having fewer phases, and the correlation is again performed. Again, those sums exhibiting no correlation are discarded, and the sum exhibiting correlation is divided into sums of fewer codes.
摘要翻译：用于唯一字序列或扩展码序列的接收机包括预先加载有代码的所有可能相位的存储器。并行地将接收信号中的序列与码的不同相位的和进行相加。因此，接收到的代码与其自己的代码的副本的所有可能的相位相关联。因此，总和中的一个将呈现相关峰值，这表示代码的期望相位被包括在该特定和中。其他总和将不会呈现相关峰值，并被丢弃。显示相关性的一个和中的不同相位被分成新的和，每个相位具有较少的相位，并且再次执行相关性。再次，表示没有相关性的那些和被丢弃，并且显示相关性的和被划分为较少代码的和。

7. 发明授权

US5708966A Method and apparatus for performing power control using the wide-band synchronization 失效
标题翻译：使用宽带同步进行功率控制的方法和装置
公开(公告)号：US5708966A
公开(公告)日：1998-01-13
申请号：US644643
申请日：1996-04-04
申请人： Naofal Mohammed Wassel Al-Dhahir , Gary Jude Saulnier , John Erik Hershey
发明人： Naofal Mohammed Wassel Al-Dhahir , Gary Jude Saulnier , John Erik Hershey
IPC分类号： H04B7/185
CPC分类号： H04B7/18543
摘要： A communications system includes first and second ground stations and a spacecraft repeater. Data signals are transmitted between ground stations by way of the repeater, together with spread-spectrum ranging signals. Uplink rain attenuation is compensated for changing the transmitted power at the ground stations. The amount of downlink attenuation is determined by measuring the total carrier-to-noise ratio in three paths, station 1 to station 2, station 2 to station 1, and station 1 to station 1. With these three values of total attenuation, the two downlink attenuations and the number of active signals traversing the repeater can be determined. The downlink attenuations are converted to uplink attenuations, and used to control the transmitters.
摘要翻译：通信系统包括第一和第二地面站和航天器中继器。数据信号通过中继器在地面站之间以及扩频测距信号一起传输。补偿上行链路雨衰，以改变地面站的发射功率。下行链路衰减的量通过测量从站1到站2，站2到站1和站1到站1的三个路径中的总载波信噪比来确定。利用这三个总衰减值，两个可以确定下行链路衰减和穿过中继器的有效信号的数量。下行链路衰减被转换为上行链路衰减，用于控制发射机。

8. 发明授权

US06621855B1 Scalable spread-spectrum signal detection and acquisition processor 有权
标题翻译：可扩展扩频信号检测和采集处理器
公开(公告)号：US06621855B1
公开(公告)日：2003-09-16
申请号：US09318853
申请日：1999-05-26
申请人： Nick Andrew Van Stralen , Richard August Korkosz , Gary Jude Saulnier , John Erik Hershey , Naofal Mohammed Wassel Al-Dhahir
发明人： Nick Andrew Van Stralen , Richard August Korkosz , Gary Jude Saulnier , John Erik Hershey , Naofal Mohammed Wassel Al-Dhahir
IPC分类号： H04B169
CPC分类号： H04B1/70752 , H04B1/708
摘要： A method allows determination of the presence of, the frequency of, and or the timing of a coded signal distributed in time, as for example a direct-sequence spread-spectrum signal or a signal having a coded header. According to the method, the received signal is correlated (16, 216, 316) with small sections of the spreading or header code, to produce partial correlations, as for example a 1024-chip spreading code is correlated in eight- or sixteen-chip portions. The result of each partial correlation is delayed (32, 232, 332/350) by an amount which results in temporal congruence or simultaneous occurrence of the partial correlations at a Doppler processor. The processor processes the simultaneous partial correlations, to produce signals which recur in the appropriate frequency bin at the recurrence rate of the spreading code. The frequency bin identifies the frequency of the received signals, and the time of the appearance of the signals at the bins is indicative of the time.
摘要翻译：一种方法允许确定在时间上分布的编码信号的存在，频率和/或定时，例如直接序列扩频信号或具有编码报头的信号。根据该方法，接收信号与扩展或报头代码的小部分相关（16,216,316），以产生部分相关性，例如1024个码片扩展码在八或十六个芯片中相关部分。每个部分相关的结果被延迟（32,232,332/350）一个量，这导致在多普勒处理器处的部分相关性的时间一致性或同时发生。处理器处理同时的部分相关，以产生以扩展码的复现速率在适当频率仓中重复的信号。频率仓识别接收到的信号的频率，并且信号在信息箱出现的时间表示时间。

9. 发明授权

US06424250B1 Communication system utilizing modified geometric harmonic modulation 有权
标题翻译：利用改进的几何谐波调制的通信系统
公开(公告)号：US06424250B1
公开(公告)日：2002-07-23
申请号：US09263582
申请日：1999-03-08
申请人： Charles McDonald Puckette, IV , Gary Jude Saulnier , Richard August Korkosz , John Erik Hershey
发明人： Charles McDonald Puckette, IV , Gary Jude Saulnier , Richard August Korkosz , John Erik Hershey
IPC分类号： H04B3/54 , H04L27/26
CPC分类号： H04B3/54 , H04B2203/5416 , H04B2203/5483 , H04L27/2614
摘要： A communication system for communicating a modified geometric harmonic modulated (GHM) signal on a power line is described. The system includes a transmitter for transmitting a GHM signal having a plurality of carriers, a highest frequency carrier being about 630 Hz, and a receiver for receiving the transmitted GHM signal.
摘要翻译：描述了用于在电力线上传送经修改的几何谐波调制（GHM）信号的通信系统。该系统包括用于发送具有多个载波的GHM信号的发射机，大约630Hz的最高频率载波，以及用于接收发送的GHM信号的接收机。

10. 发明授权

US5926467A Method and apparatus for doppler based multiple access communication control 失效
标题翻译：用于基于多普勒多重通信控制的方法和装置
公开(公告)号：US5926467A
公开(公告)日：1999-07-20
申请号：US779152
申请日：1997-01-03
申请人： John Erik Hershey , Irfan Ali , Naofal Mohammad Wassel Al-Dhahir , Gary Jude Saulnier , Robert Gordon Nelson
发明人： John Erik Hershey , Irfan Ali , Naofal Mohammad Wassel Al-Dhahir , Gary Jude Saulnier , Robert Gordon Nelson
IPC分类号： H04B7/185 , H04B7/204
CPC分类号： H04B7/18532
摘要： A single, simple but multi-moded protocol for implementation on different data transportation Low Earth Orbit (LEO) systems uses a Doppler-Based Multiple Access (DBMA) system to assign transmission times for responding transceivers. The Doppler frequency shift observed at the transceivers is used to control transmissions from them such that the system is at its maximum capacity limit at all times.
摘要翻译：用于实现不同数据传输的单一简单但多模式的协议低地球轨道（LEO）系统使用基于多普勒的多路访问（DBMA）系统为响应收发器分配传输时间。在收发器处观察到的多普勒频移用于控制来自它们的传输，使得系统始终处于其最大容量限制。

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