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1. 发明授权

US5583517A Multi-path resistant frequency-hopped spread spectrum mobile location system 失效
公开(公告)号：US5583517A
公开(公告)日：1996-12-10
申请号：US329523
申请日：1994-10-26
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman , Shimon Peleg
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman , Shimon Peleg
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： A multi-path resistant frequency-hopped spread spectrum mobile vehicle or personal location system is described which provides low cost manufacture and low power operation while still enabling the accurate location of the mobile unit over long distances and in moderate to severe multi-path conditions. The frequency-hopped spread spectrum mobile vehicle or personal location system consists of a central station, a plurality of base stations and a plurality of mobile transmitters which transmit using a frequency-hopped spread-spectrum differential bi-phase shift keying communication signal. Frequency Shift Keying modulation may also be used. Each of the plurality of base stations include an array of receiving dipole antennas and employs special algorithms for retrieving very low power frequency-hopped spread spectrum signals in a noisy and multi-path environment. The base stations use computational algorithms for determining the phase difference between each of receiving dipole antennas to determine the direction of the transmitter relative to the location of the respective base station. The multiple direction of arrival angles of the received signal at each base station are corrected based on an n-dimensional ambiguity space to locate most probable angles of arrival. The ambiguity space plot is used to eliminate erroneous comparisons of dissimilar phases of the incoming signal. The most probable values are then tracked over multiple frequency hops and a histogram analysis of the strongest surviving angles of arrival is performed. The two peaks of the histogram are used as the two most probable directions of arrival. Each base station then communicates the two relative directions of the transmitter to a central station where the location of the transmitter is determined by triangulation. The direction of arrival angles from the multiple base stations are summed in a least mean square approach to find a single direction of arrival which is then plotted on a gnomonic projection to correct for the curvature of the earth.

2. 发明授权

US5592180A Direction finding and mobile location system for trunked mobile radio systems 失效
标题翻译：定位移动无线电系统的方向发现和移动定位系统
公开(公告)号：US5592180A
公开(公告)日：1997-01-07
申请号：US329549
申请日：1994-10-26
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman , Shimon Peleg
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman , Shimon Peleg
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： A special mobile radio mobile, vehicle or personal location system is described where the system operates to locate any one of a the transmitters in an SMR system. The present invention operates by identifying the received signals, removing the modulation information to reconstruct a demodulated carrier and analyzing the carrier signals for multipath distortion. The multipath disruptions are removed to calculate the true incident angle of the transmitted signal at a base station. A plurality of base stations are used to simultaneously calculate the incident angle of the transmitted SMR signal and a central location calculates the most probable location of the transmitter based upon triangulation. The incident angle of the transmitted SMR signal at each base station is performed by calculating the phase differences of the incoming voice signal with phase ambiguity minimized by using a plurality of dipole antennas spaced at an irregular distance to eliminate phase ambiguity error.
摘要翻译：描述了一种特殊的移动无线电移动，车辆或个人定位系统，其中系统操作以定位SMR系统中的发射机中的任何一个。本发明通过识别接收到的信号，去除调制信息来重构解调载波并分析载波信号进行多径失真来进行操作。去除多径中断以计算基站处的发射信号的真实入射角。多个基站被用于同时计算发射的SMR信号的入射角，并且中心位置基于三角测量来计算发射机的最可能的位置。通过使用以不规则距离间隔的多个偶极天线来计算相位模糊度最小化的输入语音信号的相位差来执行每个基站处发送的SMR信号的入射角，以消除相位模糊误差。

3. 发明授权

US5546422A Method of transmitting low-power frequency hopped spread spectrum data 失效
标题翻译：低功率跳频扩频数据传输方法
公开(公告)号：US5546422A
公开(公告)日：1996-08-13
申请号：US362114
申请日：1994-12-22
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： An acknowledgement paging system is described which fits within the existing infrastructure of a paging network and which provides low cost manufacture and low power operation while still enabling the acknowledgement paging over long distances. The acknowledgement paging system consists of a standard paging transmitter and a plurality of remote paging units which respond to a page using frequency-hopped spread-spectrum differential bi-phase shift keying communications. The plurality of pagers are assigned to groups with each group being assigned a separate starting location in a common, repeating pseudo-random noise code which determines the frequency hops. The grouping of pagers minimizes the collisions of acknowledgment transmissions between groups and the enables a large number of paging units to operate within a single geographic area. The pagers include a special double loop PLL synthesizer to produce an accurate narrow band frequency and to change or hop frequencies in a rapid fashion. The base receiving unit employs special algorithms for retrieving very low power acknowledgement paging messages in a noisy environment by using data redundancy, data interleaving, soft decoding and error correction codes to strip the bi-phase-modulated, frequency-hopped spread-spectrum digital data transmitted from the remote pocket pagers. A history of the frequency and phase drift is used during reception of the acknowledgement messages to predict the phase and frequency drift of the encoded digital information to further reduce decoding error. Signal to noise ratios are determined for each frequency hop and relatively noisy hops are discarded or minimized in a soft decoding process based redundancy of data bits.
摘要翻译：描述了一种确认寻呼系统，其适合于寻呼网络的现有基础设施，并且在远距离执行确认寻呼的同时提供低成本的制造和低功率操作。确认寻呼系统由标准寻呼发射机和使用跳频扩频差分双相移键控通信响应寻呼的多个远程寻呼单元组成。多个寻呼机被分配给组，其中每个组被分配在确定跳频的公共重复伪随机噪声码中的单独的起始位置。寻呼机的分组使组之间的确认传输的冲突最小化，并且使得大量寻呼单元能够在单个地理区域内操作。寻呼机包括一个特殊的双回路PLL合成器，以产生精确的窄带频率，并以快速方式改变或跳频。基站接收单元采用特殊算法，通过使用数据冗余，数据交织，软解码和纠错码来消除双相调制的跳频扩频数字数据，在噪声环境中检索极低功率的确认寻呼消息从远程口袋传呼机传输。在接收确认消息期间使用频率和相位漂移的历史来预测编码的数字信息的相位和频率漂移以进一步减少解码错误。针对每个跳频确定信噪比，并且在基于软解码过程的数据比特冗余中丢弃或最小化相对噪声的跳。

4. 发明授权

US5519718A Remote unit for use with remote pager 失效
标题翻译：遥控单元，用于远程寻呼机
公开(公告)号：US5519718A
公开(公告)日：1996-05-21
申请号：US363288
申请日：1994-12-22
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： An acknowledgement paging system is described which fits within the existing infrastructure of a paging network and which provides low cost manufacture and low power operation while still enabling the acknowledgement paging over long distances. The acknowledgement paging system consists of a standard paging transmitter and a plurality of remote paging units which respond to a page using frequency-hopped spread-spectrum differential bi-phase shift keying communications. The plurality of pagers are assigned to groups with each group being assigned a separate starting location in a common, repeating pseudo-random noise code which determines the frequency hops. The grouping of pagers minimizes the collisions of acknowledgment transmissions between groups and the enables a large number of paging units to operate within a single geographic area. The pagers include a special double loop PLL synthesizer to produce an accurate narrow band frequency and to change or hop frequencies in a rapid fashion. The base receiving unit employs special algorithms for retrieving very low power acknowledgement paging messages in a noisy environment by using data redundancy, data interleaving, soft decoding and error correction codes to strip the bi-phase-modulated, frequency-hopped spread-spectrum digital data transmitted from the remote pocket pagers. A history of the frequency and phase drift is used during reception of the acknowledgement messages to predict the phase and frequency drift of the encoded digital information to further reduce decoding error. Signal to noise ratios are determined for each frequency hop and relatively noisy hops are discarded or minimized in a soft decoding process based redundancy of data bits.
摘要翻译：描述了一种确认寻呼系统，其适合于寻呼网络的现有基础设施，并且在远距离执行确认寻呼的同时提供低成本的制造和低功率操作。确认寻呼系统由标准寻呼发射机和使用跳频扩频差分双相移键控通信响应寻呼的多个远程寻呼单元组成。多个寻呼机被分配给组，其中每个组被分配在确定跳频的公共重复伪随机噪声码中的单独的起始位置。寻呼机的分组使组之间的确认传输的冲突最小化，并且使得大量寻呼单元能够在单个地理区域内操作。寻呼机包括一个特殊的双回路PLL合成器，以产生精确的窄带频率，并以快速方式改变或跳频。基站接收单元采用特殊算法，通过使用数据冗余，数据交织，软解码和纠错码来消除双相调制的跳频扩频数字数据，从而在嘈杂的环境中检索极低功率的确认寻呼消息从远程口袋传呼机传输。在接收确认消息期间使用频率和相位漂移的历史来预测编码的数字信息的相位和频率漂移以进一步减少解码错误。针对每个跳频确定信噪比，并且在基于软解码处理的数据比特冗余中丢弃或最小化相对噪声的跳。

5. 发明授权

US5870426A Grouping of spread spectrum acknowledgement pagers to minimize transmission collisions 失效
标题翻译：分组扩频确认寻呼机，以减少传输冲突
公开(公告)号：US5870426A
公开(公告)日：1999-02-09
申请号：US362246
申请日：1994-12-22
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： An acknowledgment paging system is described which fits within the existing infrastructure of a paging network and which provides low cost manufacture and low power operation while still enabling the acknowledgment paging over long distances. The acknowledgment paging system consists of a standard paging transmitter and a plurality of remote paging units which respond to a page using frequency-hopped spread-spectrum differential bi-phase shift keying communications. The plurality of pagers are assigned to groups with each group being assigned a separate starting location in a common, repeating pseudo-random noise code which determines the frequency hops. The grouping of pagers minimizes the collisions of acknowledgment transmissions between groups and the enables a large number of paging units to operate within a single geographic area.
摘要翻译：描述了一种确认寻呼系统，其适合于寻呼网络的现有基础设施，并且在远距离执行确认寻呼的同时提供低成本的制造和低功率操作。确认寻呼系统由标准寻呼发射机和使用跳频扩频差分双相移键控通信响应寻呼的多个远程寻呼单元组成。多个寻呼机被分配给组，其中每个组被分配在确定跳频的公共重复伪随机噪声码中的单独的起始位置。寻呼机的分组使组之间的确认传输的冲突最小化，并且使得大量寻呼单元能够在单个地理区域内操作。

6. 发明授权

US5430759A Low-power frequency-hopped spread spectrum reverse paging system 失效
标题翻译：低功率跳频扩频反向寻呼系统
公开(公告)号：US5430759A
公开(公告)日：1995-07-04
申请号：US158441
申请日：1993-11-24
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02 , H04L27/30
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： An acknowledgement paging system is described which fits within the existing infrastructure of a paging network and which provides low cost manufacture and low power operation while still enabling the acknowledgement paging over long distances. The acknowledgement paging system consists of a standard paging transmitter and a plurality of remote paging units which respond to a page using frequency-hopped spread-spectrum differential bi-phase shift keying communications. The plurality of pagers are assigned to groups with each group being assigned a separate starting location in a common, repeating pseudo-random noise code which determines the frequency hops. The grouping of pagers minimizes the collisions of acknowledgment transmissions between groups and the enables a large number of paging units to operate within a single geographic area. The pagers include a special double loop PLL synthesizer to produce an accurate narrow band frequency and to change or hop frequencies in a rapid fashion. The base receiving unit employs special algorithms for retrieving very low power acknowledgement paging messages in a noisy environment by using data redundancy, data interleaving, soft decoding and error correction codes to strip the bi-phase-modulated, frequency-hopped spread-spectrum digital data transmitted from the remote pocket pagers. A history of the frequency and phase drift is used during reception of the acknowledgement messages to predict the phase and frequency drift of the encoded digital information to further reduce decoding error. Signal to noise ratios are determined for each frequency hop and relatively noisy hops are discarded or minimized in a soft decoding process based redundancy of data bits.
摘要翻译：描述了一种确认寻呼系统，其适合于寻呼网络的现有基础设施，并且在远距离执行确认寻呼的同时提供低成本的制造和低功率操作。确认寻呼系统由标准寻呼发射机和使用跳频扩频差分双相移键控通信响应寻呼的多个远程寻呼单元组成。多个寻呼机被分配给组，其中每个组被分配在确定跳频的公共重复伪随机噪声码中的单独的起始位置。寻呼机的分组使组之间的确认传输的冲突最小化，并且使得大量寻呼单元能够在单个地理区域内操作。寻呼机包括一个特殊的双回路PLL合成器，以产生精确的窄带频率，并以快速方式改变或跳频。基站接收单元采用特殊算法，通过使用数据冗余，数据交织，软解码和纠错码来消除双相调制的跳频扩频数字数据，在噪声环境中检索极低功率的确认寻呼消息从远程口袋传呼机传输。在接收确认消息期间使用频率和相位漂移的历史来预测编码的数字信息的相位和频率漂移以进一步减少解码错误。针对每个跳频确定信噪比，并且在基于软解码过程的数据比特冗余中丢弃或最小化相对噪声的跳。

7. 发明授权

US5499266A Low-power frequency-hopped spread spectrum acknowledgement paging system 失效
标题翻译：低功率跳频扩频确认寻呼系统
公开(公告)号：US5499266A
公开(公告)日：1996-03-12
申请号：US362794
申请日：1994-12-22
申请人： Hanoch Yokev , Haim Harel , Yehouda Meiman
发明人： Hanoch Yokev , Haim Harel , Yehouda Meiman
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/25 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W84/02 , H04W88/02
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04L5/0053 , H04W84/025 , H04L5/0007 , H04L5/0062 , H04L5/0091 , H04W88/022
摘要： An acknowledgement paging system is described which fits within the existing infrastructure of a paging network and which provides low cost manufacture and low power operation while still enabling the acknowledgement paging over long distances. The acknowledgement paging system consists of a standard paging transmitter and a plurality of remote paging units which respond to a page using frequency-hopped spread-spectrum differential bi-phase shift keying communications. The plurality of pagers are assigned to groups with each group being assigned a separate starting location in a common, repeating pseudo-random noise code which determines the frequency hops. The grouping of pagers minimizes the collisions of acknowledgment transmissions between groups and the enables a large number of paging units to operate within a single geographic area. The pagers include a special double loop PLL synthesizer to produce an accurate narrow band frequency and to change or hop frequencies in a rapid fashion. The base receiving unit employs special algorithms for retrieving very low power acknowledgement paging messages in a noisy environment by using data redundancy, data interleaving, soft decoding and error correction codes to strip the bi-phase-modulated, frequency-hopped spread-spectrum digital data transmitted from the remote pocket pagers. A history of the frequency and phase drift is used during reception of the acknowledgement messages to predict the phase and frequency drift of the encoded digital information to further reduce decoding error. Signal to noise ratios are determined for each frequency hop and relatively noisy hops are discarded or minimized in a soft decoding process based redundancy of data bits.
摘要翻译：描述了一种确认寻呼系统，其适合于寻呼网络的现有基础设施，并且在远距离执行确认寻呼的同时提供低成本的制造和低功率操作。确认寻呼系统由标准寻呼发射机和使用跳频扩频差分双相移键控通信响应寻呼的多个远程寻呼单元组成。多个寻呼机被分配给组，其中每个组被分配在确定跳频的公共重复伪随机噪声码中的单独的起始位置。寻呼机的分组使组之间的确认传输的冲突最小化，并且使得大量寻呼单元能够在单个地理区域内操作。寻呼机包括一个特殊的双回路PLL合成器，以产生精确的窄带频率，并以快速方式改变或跳频。基站接收单元采用特殊算法，通过使用数据冗余，数据交织，软解码和纠错码来消除双相调制的跳频扩频数字数据，在噪声环境中检索极低功率的确认寻呼消息从远程口袋传呼机传输。在接收确认消息期间使用频率和相位漂移的历史来预测编码的数字信息的相位和频率漂移以进一步减少解码错误。针对每个跳频确定信噪比，并且在基于软解码过程的数据比特冗余中丢弃或最小化相对噪声的跳。

8. 发明授权

US5530452A Method of synchronizing spread spectrum radio transmitters 失效
标题翻译：同步扩频无线电发射机的方法
公开(公告)号：US5530452A
公开(公告)日：1996-06-25
申请号：US363289
申请日：1994-12-22
申请人： Hanoch Yokev , Haim Harel
发明人： Hanoch Yokev , Haim Harel
IPC分类号： G01S1/00 , G01S5/02 , G01S19/03 , H04B7/26 , G01S3/02
CPC分类号： H04B7/2693 , G01S3/48 , G01S5/021 , G01S5/0289 , H01Q21/28 , H01Q3/2635 , H04B7/2681
摘要： Position determining apparatus including at least one base transmitter/receiver (BTR) station including a base transmitter which periodically transmits timing signals and a plurality of mobile transmitter/receivers (MTR). Each MTR includes a mobile receiver operative to receive timing signals transmitted by at least one base transmitter; synchronization circuitry receiving the timing signals and providing a spread-spectrum frequency-hopping sequence characteristic of the particular MTR; and a mobile transmitter producing a radiated frequency hopped signal responsive to the frequency-hopping sequence and the timing signal.
摘要翻译：位置确定装置包括至少一个基站发射机/接收机（BTR）站，所述基站发射机/接收机（BTR）站包括定期发送定时信号的基站发射机和多个移动发射机/接收机（MTR）。每个MTR包括可操作以接收由至少一个基站发射机发送的定时信号的移动接收机; 接收定时信号并提供特定MTR的扩频跳频序列特征的同步电路; 以及响应于跳频序列和定时信号产生辐射跳频信号的移动发射机。

9. 发明授权

US5379047A Remote position determination system 失效
标题翻译：远程位置确定系统
公开(公告)号：US5379047A
公开(公告)日：1995-01-03
申请号：US140716
申请日：1993-10-21
申请人： Hanoch Yokev , Haim Harel
发明人： Hanoch Yokev , Haim Harel
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/03 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W88/02
CPC分类号： H04B1/7156 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B7/2681 , H04B7/2693 , H04W64/00 , H04W88/022
摘要： Position determining apparatus including at least one base transmitter/receiver (BTR) station including a base transmitter which periodically transmits timing signals and a plurality of mobile transmitter/receivers (MTR). Each MTR includes a mobile receiver operative to receive timing signals transmitted by at least one base transmitter; synchronization circuitry receiving the timing signals and providing a spread-spectrum frequency-hopping sequence characteristic of the particular MTR; and a mobile transmitter producing a radiated frequency hopped signal responsive to the frequency-hopping sequence and the timing signal.
摘要翻译：位置确定装置包括至少一个基站发射机/接收机（BTR）站，所述基站发射机/接收机（BTR）站包括定期发送定时信号的基站发射机和多个移动发射机/接收机（MTR）。每个MTR包括可操作以接收由至少一个基站发射机发送的定时信号的移动接收机; 接收定时信号并提供特定MTR的扩频跳频序列特征的同步电路; 以及响应于跳频序列和定时信号产生辐射跳频信号的移动发射机。

10. 发明授权

US5335246A Pager with reverse paging facility 失效
标题翻译：寻呼机与反向寻呼设备
公开(公告)号：US5335246A
公开(公告)日：1994-08-02
申请号：US961776
申请日：1992-10-15
申请人： Hanoch Yokev , Haim Harel
发明人： Hanoch Yokev , Haim Harel
IPC分类号： G01S1/02 , G01S3/02 , G01S3/04 , G01S3/10 , G01S5/00 , G01S5/02 , G01S5/04 , G01S19/03 , G01S19/27 , H04B1/713 , H04B1/7156 , H04B7/26 , H04W64/00 , H04W88/02 , G08B5/22
CPC分类号： H04W64/00 , G01S1/026 , G01S3/023 , G01S3/043 , G01S3/10 , G01S5/0009 , G01S5/021 , G01S5/04 , H04B1/713 , H04B1/7156 , H04B7/2681 , H04B7/2693 , H04W88/022
摘要： Position determining apparatus including at least one base station including a base transmitter which periodically transmits timing signals and a plurality of mobile remote units. Each remote unit includes a mobile receiver operative to receive timing signals transmitted by at least one base transmitter; synchronization circuitry receiving the timing signals and providing a spread-spectrum frequency-hopping sequence characteristic of the particular remote unit; a mobile transmitter producing a radiated frequency-hopped signal responsive to the frequency-hopping sequence and the timing signal; and a message generator operative to modify the radiated frequency-hopped signal to transmit a message to the at least one base station. least one base station.
摘要翻译：位置确定装置包括至少一个基站，该基站包括周期性地发送定时信号的基站发射机和多个移动远程单元。每个远程单元包括可操作以接收由至少一个基站发射机发送的定时信号的移动接收机; 同步电路接收定时信号并提供特定远程单元的扩频跳频序列特征; 响应于跳频序列和定时信号产生辐射跳频信号的移动发射机; 以及消息发生器，其操作以修改所述辐射的跳频信号以将消息发送到所述至少一个基站。至少一个基站。

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