Radar method for measuring distances between and relative speeds of a vehicle and one or more obstacles
    1.
    发明授权
    Radar method for measuring distances between and relative speeds of a vehicle and one or more obstacles 有权
    用于测量车辆与一个或多个障碍物之间的距离和相对速度的雷达方法

    公开(公告)号:US06396436B1

    公开(公告)日:2002-05-28

    申请号:US09545528

    申请日:2000-04-07

    IPC分类号: G01S1393

    CPC分类号: G01S13/931 G01S13/34

    摘要: The present invention relates to a CW radar method for measuring distances between and relative speeds of a vehicle and one or more obstacles. The present invention further provides that the transmission (s(t)) can be composed of at least four consecutive chirps (A, B, C, D), each having different slopes. The intersection points of all lines in the distance-relative speed diagram from two chirps (A, B) can be calculated from all the ascertained frequency positions K1,n and K2,p. To validate those intersection points, one may observe whether a peak exists in the Fourier spectrum of a third chirp C at a frequency position K3,q, whose assigned line intersects a surrounding area of the intersection point in the distance-relative speed diagram. A further validation of those intersection points involves observing whether a peak exists in the Fourier spectrum of a fourth chirp D at a frequency position K4,r, whose assigned line intersects a surrounding area of the intersection point in the distance-relative speed diagram. The intersection points are then regarded as valid, when they satisfy both conditions.

    摘要翻译: 本发明涉及一种用于测量车辆与一个或多个障碍物之间的距离和相对速度的CW雷达方法。 本发明还提供了传输(s(t))可以由至少四个连续的啁啾(A,B,C,D)组成,每个具有不同的斜率。 从两个啁啾(A,B)的距离相对速度图中的所有线的交点可以从所有确定的频率位置K1,n和K2,p计算。 为了验证这些交点,可以观察频率位置K3的第三线性调频脉冲C的傅立叶频谱中是否存在峰值,q的分配线与距离相对速度图中的交点的周围区域相交。 这些交点的进一步验证包括观察在频率位置K4,r处的第四线性调频脉冲D的傅里叶谱中是否存在峰,其分配线与距离相对速度图中的交点的周围区域相交。 当满足这两个条件时,交点被认为是有效的。

    Method and device for determining separation and relative speed of a distant object
    2.
    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。

    Computerised radar process for measuring distances and relative speeds
between a vehicle and obstacles located in front of it
    3.
    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。

    Radar process for the measurement of distances and relative speeds
between a vehicle and one or more obstructions
    4.
    发明授权
    Radar process for the measurement of distances and relative speeds between a vehicle and one or more obstructions 失效
    用于测量车辆与一个或多个障碍物之间的距离和相对速度的雷达过程

    公开(公告)号:US5757308A

    公开(公告)日:1998-05-26

    申请号:US729051

    申请日:1996-10-10

    摘要: In the particular embodiment disclosed in the specification, a CW radar process for measurement of distances and relative speeds between a vehicle and one or more obstructions including transmitting a sequence of constant-frequency radar signal bursts which follow one another without any time interval during four successive measurements. In the first measurement, the radar signal bursts are of sequentially increasing frequency and in the second measurement they are of sequentially decreasing frequency while in the third measurement they have the same frequency and in the fourth measurement the burst frequencies follow a coded pattern. Demodulation of the signals which are reflected by obstructions is carried out by mixing them with the transmitted signals using only one single-channel mixer providing an output signal which is not the signal of a phase curve but of an amplitude curve.

    摘要翻译: 在本说明书中公开的特定实施例中,用于测量车辆与一个或多个障碍物之间的距离和相对速度的CW雷达过程,包括在四个连续的时间段内传输一系列恒定频率的雷达信号脉冲串,没有任何时间间隔 测量。 在第一次测量中,雷达信号脉冲串的频率依次增加,而在第二次测量中,它们的频率依次降低,而在第三次测量中,它们具有相同的频率,而在第四次测量中,脉冲串频率遵循编码模式。 由障碍物反射的信号的解调是通过使用仅一个单通道混合器将它们与发射信号混合来进行的,该单通道混频器提供不是相位曲线的信号而是幅度曲线的输出信号。

    Method and communication station for transmitting data
    6.
    发明授权
    Method and communication station for transmitting data 有权
    用于传输数据的方法和通信站

    公开(公告)号:US07577399B2

    公开(公告)日:2009-08-18

    申请号:US10518585

    申请日:2003-06-16

    IPC分类号: H04B7/15

    摘要: In a method for the error-monitored transmission of data via interfaces of a multi-step communication system, the data is transmitted from a transmitter station to a data-receiving station via at least two relay stations which are connected therebetween and receive and further transmit the data parallel to each other. The data is retransmitted if the transmission has been insufficient due to a request from the receiver end and/or due to the lack of a confirmation from the receiver end. In order to increase performance while reducing power consumption of the system, the request or confirmation is generated only by the receiver station and is sent back to the transmitter station. The relay stations consequently do not generate any confirmations or requests.

    摘要翻译: 在通过多步通信系统的接口进行错误监视的数据传输的方法中,数据经由至少两个连接在它们之间的中继站从发射台发送到数据接收站,并接收并进一步传输 数据相互并行。 如果由于来自接收机端的请求和/或由于接收机端没有确认而导致传输不足,则重发数据。 为了提高性能同时降低系统的功耗,请求或确认仅由接收站产生,并被发送回发射台。 因此,中继站不产生任何确认或请求。

    Method for synchronizing a radio communication system divided into radio cells, a base station and mobile station in such a system
    7.
    发明授权
    Method for synchronizing a radio communication system divided into radio cells, a base station and mobile station in such a system 有权
    在这种系统中同步分成无线电小区,基站和移动台的无线电通信系统的方法

    公开(公告)号:US07328034B2

    公开(公告)日:2008-02-05

    申请号:US10567466

    申请日:2004-07-07

    IPC分类号: H04B7/01

    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 for HPRF-radar measurement
    9.
    发明授权
    Method for HPRF-radar measurement 失效
    HPRF雷达测量方法

    公开(公告)号:US06686871B2

    公开(公告)日:2004-02-03

    申请号:US10303057

    申请日:2002-11-25

    IPC分类号: G01A1332

    摘要: In a method for HPRF-radar measurement of the range and Doppler frequency of at least one target, a transmit signal is generated which consists of two pulse sequences that are interleaved on a pulse to pulse basis, and have the same pulse repetition frequency PRF and the same transmit frequency. The pulses of a first one of the two pulse sequences have a linearly increasing phase value with a fixed phase difference &phgr;1n (greater than zero) from pulse to pulse with &phgr;1n≧0, while the pulses of the second pulse sequence have a linear increasing phase value with a fixed phase difference &phgr;2n which differs from &phgr;1n. The two received base band signals of each individual pulse sequence are Fourier transformed, and the amplitude peaks of the resulting two Fourier spectra are determined. The amplitude peaks of the two Fourier spectra are then clustered to determine pairs of spectral lines of a Doppler frequency shift of Δ ⁢   ⁢ f = ϕ 2 ⁢ n - ϕ 1 ⁢ n 2 ⁢ π · PRF . The target Doppler frequency is calculated based on two Doppler frequencies of a previously determined spectral line pair, and the target range is calculated based on the phase difference between the two spectral lines of a previously determined spectral line pair.

    摘要翻译: 在用于对至少一个目标的范围和多普勒频率进行HPRF雷达测量的方法中,产生发射信号,其由以脉冲为基础交织的两个脉冲序列组成,并且具有相同的脉冲重复频率PRF和 发射频率相同。 两个脉冲序列中的第一个的脉冲具有线性增加的相位值,具有从脉冲到脉冲的固定相位差phi1n(大于零),而phi1n> = 0,而第二脉冲序列的脉冲具有线性增加 相位值具有与phi1n不同的固定相位差phi2n。 将每个单个脉冲序列的两个接收基带信号进行傅里叶变换,并且确定所得到的两个傅里叶谱的幅度峰值。 然后将两个傅立叶频谱的幅度峰聚合以确定多普勒频移的谱线对,基于先前确定的谱线对的两个多普勒频率来计算目标多普勒频率,并且基于 先前确定的谱线对的两个谱线之间的相位差。

    Process for range measurement with a pulse radar of high pulse
repetition frequency
    10.
    发明授权
    Process for range measurement with a pulse radar of high pulse repetition frequency 失效
    具有高脉冲重复频率的脉冲雷达的距离测量过程

    公开(公告)号:US4916452A

    公开(公告)日:1990-04-10

    申请号:US175232

    申请日:1988-03-30

    IPC分类号: G01S13/24 G01S13/58

    CPC分类号: G01S13/582 G01S13/24

    摘要: With a frequency-agile pulsed doppler radar with high pulse repetition frequency (HPRF) in the unambiguous velocity region, in order to measure the range of a target the complex time signal derived from the echo signals of a coherent processing interval (CPI) is transformed into the frequency domain, the transformed spectrum is multiplied by a bandpass function with a mean frequency coinciding with the doppler frequency of the target, and the product is transformed back into a time signal. The real envelope of this re-transformed time signal displays a definite leading edge and a steady state region, from which the echo travel time can be estimated. Particular advantages may be derived for the pulsed doppler radar set from a plurality of frequency agile transmitter/receivers operated at the same time at different frequencies, and whose frequency switching times are time-staggered.

    摘要翻译: 通过在明确的速度区域中具有高脉冲重复频率(HPRF)的频率敏捷脉冲多普勒雷达,为了测量目标的范围,从相干处理间隔(CPI)的回波信号导出的复合时间信号被变换 变换频谱乘以具有与目标的多普勒频率一致的平均频率的带通函数,并将乘积转换回时间信号。 这个重新变换的时间信号的真实包络显示一个确定的前沿和一个稳态区域,从中可以估计回波行进时间。 可以从在不同频率同时操作的多个频率敏捷发射机/接收机的脉冲多普勒雷达组导出特定的优点,并且其频率切换时间是时间交错的。