公开(公告)号：US07064704B2

公开(公告)日：2006-06-20

申请号：US10835574

申请日：2004-04-30

申请人： Bengt Bergkvist

发明人： Bengt Bergkvist

IPC分类号： G01S13/20 ,  G01S13/522

CPC分类号： G01S13/22 ,  G01S7/2923 ,  G01S13/18 ,  G01S13/20

摘要： A radar transmits electromagnetic energy in pulse repetition intervals and receives reflections from objects in range gates including Doppler filters. The radar approves desirable ambiguous echoes and suppresses ambiguous echoes of no interest or that interfere with the radar's display. The radar frequency varies according to a staggered or wobbling pattern. The ambiguous echoes produce one pulse in the range gates within a predetermined number of periods. The Doppler filter works with an impulse function response that includes a small number of samples. The Doppler filter, during the predetermined number of periods, gives rise to independent samples from reflectors within the radar's unambiguous range. When the independent samples exceed the small number of samples, the radar approves the ambiguous echo. Otherwise, it is suppressed. In this way, ambiguous echoes are prevented from interfering with the reception or display of echoes. The suppression of asynchronous interferences can be made easier.

摘要翻译： 雷达以脉冲重复间隔传输电磁能，并接收包括多普勒滤波器在内的范围门中物体的反射。 雷达批准了所需的模糊回波，并且抑制了不感兴趣的或者干扰雷达显示的不明确的回波。 雷达频率根据交错或摆动模式而变化。 模糊回波在预定数量的周期内在范围门中产生一个脉冲。 多普勒滤波器具有包含少量样本的脉冲函数响应。 在预定数量的周期内，多普勒滤波器产生独立样本，不受雷达清晰范围内的反射器的影响。 当独立样本超过少量样本时，雷达批准模糊回波。 否则，它被抑制。 以这种方式，阻止歧义回波干扰回波的接收或显示。 抑制异步干扰可以更容易。

公开(公告)号：US6064888A

公开(公告)日：2000-05-16

申请号：US978912

申请日：1997-11-26

申请人： Patrik Lundqvist ,  Hans Grubeck ,  Bengt Bergkvist ,  Sven Fischer

发明人： Patrik Lundqvist ,  Hans Grubeck ,  Bengt Bergkvist ,  Sven Fischer

IPC分类号： G01S5/06 ,  G01S5/14 ,  G01S19/03 ,  H04W64/00 ,  H04Q7/00 ,  H04Q7/24

CPC分类号： H04W64/00 ,  G01S5/06 ,  G01S5/14

摘要： A method and system are disclosed for determining the distance between a radio receiver (RX) and a radio transmitter (TX) by uplink time measurements, whereby uplink messages are transmitted by the transmitter (TX) and used primarily for position determination. In one embodiment, the uplink messages are intra-cell handover messages if the transmitter (TX) is a component of a mobile radio terminal which is operating in accordance with an existing TDMA standard. In a second embodiment, the uplink messages are a new type of message transmitted in time slots not used by the mobile radio terminal and preferably, also not used by other mobile radio terminals in the system, if the transmitter (TX) is a component of a mobile radio terminal which is operating in accordance with a new or emerging TDMA standard. The evolving GSM radio air-interface standard is an example of such a TDMA standard.

摘要翻译： 公开了一种用于通过上行链路时间测量来确定无线电接收机（RX）和无线电发射机（TX）之间的距离的方法和系统，由此上行链路消息由发射机（TX）发送并主要用于位置确定。 在一个实施例中，如果发射机（TX）是根据现有TDMA标准操作的移动无线电终端的组件，则上行链路消息是小区内切换消息。 在第二实施例中，上行链路消息是在移动无线电终端未使用的时隙中发送的新类型的消息，并且优选地也不被系统中的其他移动无线终端使用，如果发射机（TX）是 根据新的或新兴的TDMA标准操作的移动无线电终端。 演进的GSM无线电空中接口标准是这种TDMA标准的一个例子。

公开(公告)号：US06522644B2

公开(公告)日：2003-02-18

申请号：US09104339

申请日：1998-06-25

申请人： Bengt Bergkvist

发明人： Bengt Bergkvist

IPC分类号： H04J306

CPC分类号： H04L7/041

摘要： A method and system are disclosed for decorrelating background interference signals in a time-synchronized cellular system, in which a mobile station inserts a different training sequence in each successive transmitted burst. The constantly varying background interference signal environment that results can be decorrelated at base station receivers, which enhances the reception of multiple independent mobile station transmissions, and thus increases the sensitivity and precision of time-synchronization measurements, such as, for example, time-of-arrival or time-difference-of-arrival measurements made for mobile station positioning purposes.

摘要翻译： 公开了一种用于在时间同步的蜂窝系统中去相关背景干扰信号的方法和系统，其中移动台在每个连续发射的突发中插入不同的训练序列。 导致的不断变化的背景干扰信号环境可以在基站接收机处被解相关，这增强了多个独立移动台传输的接收，从而增加了时间同步测量的灵敏度和精度，例如时间 - 针对移动台定位目的进行的差距或到达时间差测量。

公开(公告)号：US20050035903A1

公开(公告)日：2005-02-17

申请号：US10835574

申请日：2004-04-30

申请人： Bengt Bergkvist

发明人： Bengt Bergkvist

IPC分类号： G01S7/292 ,  G01S13/18 ,  G01S13/20 ,  G01S13/22 ,  G01S13/524

CPC分类号： G01S13/22 ,  G01S7/2923 ,  G01S13/18 ,  G01S13/20

摘要： A radar is arranged to transmit electromagnetic energy in pulse repetition intervals and to receive reflections or echoes from objects in range gates intended for the purpose, which range gates are provided with Doppler filters. The radar is arranged to approve ambiguous echoes that are desirable and to suppress ambiguous echoes that are of no interest or that interfere with the display function of the radar. The radar works with a frequency that varies according to a staggered or wobbling pattern. The respective ambiguous echoes produce only one pulse in the respective range gates concerned, within a predetermined number of periods. The respective Doppler filter concerned is arranged to work with an impulse function response that only consists of a small number of samples. The Doppler filter is also arranged, during the predetermined number of periods, to give rise to a number of independent samples from reflectors within the radar's unambiguous range. When the sad independent samples exceed the small number of samples, the radar approves the ambiguous echo. Otherwise, it is suppressed. In this way, ambiguous echoes are prevented from interfering with the reception or display of the echoes on the display screen. The suppression of asynchronous interferences, for example pulses from other radar stations, can also be made easier in a simple way.

摘要翻译： 雷达被布置为以脉冲重复间隔传输电磁能量，并且从目的地范围门中的物体接收反射或回波，该范围门设有多普勒滤波器。 雷达被安排为批准所需的模棱两可的回波，并且抑制不感兴趣的或者干扰雷达的显示功能的不明确的回波。 雷达的工作频率根据交错或波动的格局而变化。 相应的模糊回波在预定数量的周期内在相关范围门中产生仅一个脉冲。 相关的相应的多普勒滤波器被布置成与仅由少量样本组成的脉冲函数响应一起工作。 在预定数量的周期期间，多普勒滤波器也被布置成从雷达的明确范围内的反射器产生多个独立样本。 当悲伤的独立样本超过少量样本时，雷达批准模糊回波。 否则，它被抑制。 以这种方式，阻止歧义回波干扰显示屏上的回波的接收或显示。 抑制异步干扰，例如来自其他雷达站的脉冲也可以以简单的方式变得更容易。

公开(公告)号：US6091958A

公开(公告)日：2000-07-18

申请号：US23163

申请日：1998-02-13

申请人： Bengt Bergkvist ,  Roland Bodin

发明人： Bengt Bergkvist ,  Roland Bodin

IPC分类号： H04W4/14 ,  H04W64/00 ,  H04Q7/20

CPC分类号： H04W64/00 ,  H04W4/14

摘要： The present invention relates to a method of sending to an unknown switching centre that serves a given mobile station a command concerning said mobile station. The command is sent by using a previously known short message service, e.g. SMS in the GSM-system. The command may constitute a request for the switching centre to determine the position of the mobile station and is sent from a positioning node outside the mobile communications system. The invention also relates to a method of sending data from the switching centre to the positioning node. The invention also relates to a switching centre and also to a system for carrying out the method.

摘要翻译： 本发明涉及一种发送给给定移动台的未知交换中心的方法，该命令涉及所述移动台。 该命令通过使用先前已知的短消息服务来发送，例如， GSM系统中的短信。 该命令可以构成对交换中心确定移动台的位置并从移动通信系统外部的定位节点发送的请求。 本发明还涉及从交换中心向定位节点发送数据的方法。 本发明还涉及一种交换中心，还涉及一种用于执行该方法的系统。