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。

公开(公告)号：US06570497B2

公开(公告)日：2003-05-27

申请号：US09941916

申请日：2001-08-30

申请人： Charles McDonald Puckette, IV ,  Harold Woodruff Tomlinson, Jr. ,  John Erik Hershey ,  Stephen Michael Hladik

发明人： Charles McDonald Puckette, IV ,  Harold Woodruff Tomlinson, Jr. ,  John Erik Hershey ,  Stephen Michael Hladik

IPC分类号： G08B108

CPC分类号： B61L23/044 ,  B61K9/08 ,  B61L3/002 ,  B61L23/047 ,  B61L2205/04 ,  G01S7/003 ,  G01S7/41 ,  G01S13/0209 ,  G01S13/60 ,  G01S13/88 ,  G01S13/9029

摘要： An apparatus for inspecting an operational condition of a rail track from a railcar includes an antenna positioned on the railcar that directs radar signals toward the rail track and collects radar signals returned from the rail track. A radar transceiver is connected to the antenna and supplying the radar signals to the antenna. The radar transceiver receives radar returned signals from an interaction of the radar signal with the rail track. A controller is connected to the radar transceiver for controlling transmission of the radar signals from the radar transceiver and receipt of the radar returned signals. A signal processing unit is connected to the controller and a sensor unit that supplies input data to the signal processing unit. The signal processing unit processes at least the input data and the radar returned signal to produce processor output data and to determine the operational condition of the rail track.

公开(公告)号：US06792058B1

公开(公告)日：2004-09-14

申请号：US09614776

申请日：2000-07-12

申请人： John Erik Hershey ,  Ralph Thomas Hoctor ,  Richard August Korkosz ,  Charles McDonald Puckette, IV

发明人： John Erik Hershey ,  Ralph Thomas Hoctor ,  Richard August Korkosz ,  Charles McDonald Puckette, IV

IPC分类号： H04L102

CPC分类号： G01S13/782

摘要： The capacity of a Mode-S ADS-B surveillance radar system is increased by sectorizing the radar system by the use of a directional array of Mode-S, quarter wavelength, single element, stub antennas. The ensemble of signals from the array of Mode-S antenna elements is processed electronically. The signal processing/receiver architecture increases the capacity of the Mode-S ADS-B system to be capable of effectively functioning within a highly congested airspace.

摘要翻译： 通过使用Mode-S，四分之一波长，单个元件，短截线天线的方向阵列对雷达系统进行分区，来增加Mode-S ADS-B监视雷达系统的容量。 来自Mode-S天线元件阵列的信号的集合是以电子方式处理的。 信号处理/接收机架构增加了Mode-S ADS-B系统能够在高度拥挤的空域内有效运行的能力。

公开(公告)号：US06377565B1

公开(公告)日：2002-04-23

申请号：US09162805

申请日：1998-09-29

申请人： Charles McDonald Puckette, IV

发明人： Charles McDonald Puckette, IV

IPC分类号： H04J316

CPC分类号： H04J3/0682 ,  H04B7/18504 ,  H04W56/0045

摘要： A propagation delay compensation device and method provide adaptive propagation delay compensation in a time division multiple access (TDMA) communications system. The device includes a range computation unit and a delay computation unit. The range unit receives data signals to identify respective positions of a base station and a transceiver and, in response, generates a signal indicating line-of-sight range between the base station and the transceiver. The delay unit receives the range signal and, in response, generates a required delay which provides for alignment of communications signals received at the base station to arrive in alignment with assigned time slots at the base station. In one embodiment, the invention enables communication from aircraft through TDMA cellular systems using standard TDMA waveform formats.

摘要翻译： 传播延迟补偿装置和方法在时分多址（TDMA）通信系统中提供自适应传播延迟补偿。 该装置包括范围计算单元和延迟计算单元。 范围单元接收数据信号以识别基站和收发器的相应位置，并且作为响应，产生指示基站和收发器之间的视距范围的信号。 延迟单元接收范围信号，并且作为响应，产生所需的延迟，其提供在基站处接收的通信信号的对准，以与基站处的分配的时隙对齐。 在一个实施例中，本发明使得能够使用标准TDMA波形格式从飞机通过TDMA蜂窝系统进行通信。