Method for synchronisation of a radio communication system divided into radio cells a base station and a mobile station in such system
    3.
    发明申请
    Method for synchronisation of a radio communication system divided into radio cells a base station and a mobile station in such system 有权
    用于在这种系统中将基站和移动台划分为无线电小区的无线电通信系统的同步方法

    公开(公告)号:US20060234738A1

    公开(公告)日:2006-10-19

    申请号:US10567466

    申请日:2004-07-07

    IPC分类号: H04B7/00 H04Q7/20

    CPC分类号: H04B7/2696

    摘要: A method synchronizes a radio communication system divided into radio cells. Data is transmitted in the radio communication system by a multiple access method. Each radio cell thus has a base station for the radio feed of several mobile stations, allocated to the radio cell. A synchronization of the base station is carried out using the received signals from mobile stations in the same radio cell and also in adjacent radio cells. The base station determines at least one pilot signal and signals said pilot signal to the allocated mobile stations in a downwards direction. The allocated mobile stations transmit the signaled pilot signal in an upwards direction to the base station. The base station determines a synchronization value, from the received pilot signals from the radio cell thereof and also from the adjacent radio cells, fro a time synchronization and/or for a frequency synchronization on which the bas station is synchronized.

    摘要翻译: 一种方法使被分成无线电小区的无线通信系统同步。 通过多址方式在无线通信系统中发送数据。 因此,每个无线电小区具有分配给无线电小区的几个移动站的无线电馈送的基站。 使用来自同一无线电小区中的移动站以及相邻无线电小区中的接收信号来执行基站的同步。 基站确定至少一个导频信号,并向所分配的移动台向下信号发送所述导频信号。 所分配的移动台向上发送信号的导频信号到基站。 基站根据来自其接收的导频信号和来自相邻无线电小区的接收的导频信号,通过时间同步和/或基站同步的频率同步来确定同步值。

    Method and device for determining separation and relative speed of a distant object
    4.
    发明授权
    Method and device for determining separation and relative speed of a distant object 有权
    用于确定远距离物体的分离和相对速度的方法和装置

    公开(公告)号:US06864832B2

    公开(公告)日:2005-03-08

    申请号:US10363156

    申请日:2001-10-10

    摘要: The distance and relative speed of an object remote from an observation point determined using a signal form which includes two signals having a predetermined spacing relative to each other. The two signals are transmitted for a certain time interval during which the frequency of the signals is modulated in a stepwise fashion. Additionally, the signal sections of the two signals are transmitted alternately for each step so that there is a predetermined frequency spacing between the signal sections being emitted consecutively.

    摘要翻译: 使用包括相对于彼此具有预定间隔的两个信号的信号形式确定远离观察点的物体的距离和相对速度。 这两个信号被传送一段时间间隔,在此期间信号的频率以逐步的方式被调制。 此外,两个信号的信号部分交替地传送到每个步骤,使得在连续发射的信号部分之间存在预定的频率间隔。

    Method for operating a radar system
    5.
    发明授权
    Method for operating a radar system 失效
    操作雷达系统的方法

    公开(公告)号:US6147638A

    公开(公告)日:2000-11-14

    申请号:US208415

    申请日:1998-12-10

    摘要: In a method for operating a radar system, the object is to determine by simple means and at low cost the distance and/or the radial velocity of at least one target object with high resolution. For this purpose, in each measuring phase of the measurement process in the "pulse FMCW radar system", switchover between a transmission mode and a receiving mode is effected a multiple number of times and at short intervals of time. In the transmission mode, all receiving units of the radar system are switched off, while a pulse-shaped (frequency-modulated) transmission signal with time-successive transmission pulses having a specific pulse-on time and a specific carrier frequency is emitted from at least one transmitter unit of the radar system. In receiving mode, all transmitter units are switched off in the pulse-off times of the transmission pulses, while from at least one receiver unit all reflection signals originating from the last emitted transmission pulse are detected as received signal from the entire observation range before emission of the next transmission pulse. The distance and/or the radial velocity of the reflection objects is determined indirectly by the signal processing unit of the radar system by evaluation of the frequency difference and/or phase difference between the transmission signal and the received signal.

    摘要翻译: 在用于操作雷达系统的方法中,目的是通过简单的手段并且以低成本确定至少一个具有高分辨率的目标物体的距离和/或径向速度。 为此,在“脉冲FMCW雷达系统”的测量过程的每个测量阶段,传输模式和接收模式之间的切换多次并且在短时间间隔内进行。 在传输模式中,雷达系统的所有接收单元被关闭,而具有特定脉冲开启时间和特定载波频率的具有时间连续传输脉冲的脉冲形(调频)传输信号从 雷达系统的至少一个发射机单元。 在接收模式下,所有发射机单元在传输脉冲的脉冲关闭时间内被关闭,而从至少一个接收机单元,源自最后发射的发射脉冲的所有反射信号都被从发射前的整个观察范围检测为接收信号 的下一个传输脉冲。 反射物体的距离和/或径向速度由雷达系统的信号处理单元通过评估发射信号和接收信号之间的频率差和/或相位差间接确定。

    Computerised radar process for measuring distances and relative speeds
between a vehicle and obstacles located in front of it
    6.
    发明授权
    Computerised radar process for measuring distances and relative speeds between a vehicle and obstacles located in front of it 失效
    用于测量车辆与位于其前方的障碍物之间的距离和相对速度的计算机雷达过程

    公开(公告)号:US5768131A

    公开(公告)日:1998-06-16

    申请号:US492079

    申请日:1995-10-10

    摘要: A vehicle radar emits four groups of single-frequency stepped radar pulses. In group A, the frequency of each pulse is a fixed amount higher than that of the preceding pulse. In group B, the frequency of each pulse is a fixed amount lower than that of the preceding pulse. In group C, the frequency of each pulse is the same as that of the preceding pulse. In group D, the frequency of each pulse depends on a modulo algorithm. The signals reflected from other vehicles may readily be processed with inexpensive equipment to discriminate among such other vehicles, and to determine the distance to, and relative speed of, each such vehicle.

    摘要翻译: PCT No.PCT / EP93 / 03714 Sec。 371日期1995年10月10日第 102(e)日期1995年10月10日PCT 1993年12月29日PCT PCT。 第WO94 / 16340号公报 日期1994年7月21日车辆雷达发射四组单频阶梯式雷达脉冲。 在组A中,每个脉冲的频率是比先前脉冲的频率高的固定量。 在组B中,每个脉冲的频率是比先前脉冲的频率低的固定量。 在组C中,每个脉冲的频率与先前脉冲的频率相同。 在D组中,每个脉冲的频率取决于模算法。 从其他车辆反射的信号可以用便宜的设备来处理,以区分这些其他车辆,并且确定每个这样的车辆的距离和相对速度。

    Method of and a device for recognizing targets and suppressing spurious
signals in radar equipment
    8.
    发明授权
    Method of and a device for recognizing targets and suppressing spurious signals in radar equipment 失效
    雷达设备识别目标和抑制杂散信号的方法和装置

    公开(公告)号:US4649394A

    公开(公告)日:1987-03-10

    申请号:US483722

    申请日:1983-04-11

    IPC分类号: G01S7/292 G01S7/28

    CPC分类号: G01S7/2927

    摘要: A method of recognizing targets and suppressing spurious signals in radar equipment, in which the surveillance area is divided, in azimuth and range, into a plurality of radar cells. The method comprises comparing the echo signal of each radar cell with a threshold value, producing a sequence of magnitude related amplitude values of echo signals in certain neighboring cells and deriving the threshold value from a value situated in a specific position in said sequence.

    摘要翻译: 一种在雷达设备中识别目标和抑制杂散信号的方法,其中监视区域在方位角和范围内被划分成多个雷达小区。 该方法包括将每个雷达小区的回波信号与阈值进行比较,产生某些相邻小区中的回波信号的幅度相关幅度值序列,并从位于所述序列中特定位置的值导出该阈值。