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    • 12. 发明授权
    • Method and apparatus for enhancing the accuracy and speed of a ray launching simulation tool
    • 用于提高射线发射模拟工具的精度和速度的方法和装置
    • US08332196B2
    • 2012-12-11
    • US11948636
    • 2007-11-30
    • Salvador SibecasAlexander BijamovCelestino A. CorralGlafkos Stratis
    • Salvador SibecasAlexander BijamovCelestino A. CorralGlafkos Stratis
    • G06F17/50
    • G06F17/5009G06F2217/10G06F2217/78
    • A method (600) and simulation tool (200) having enhanced accuracy and speed for simulation using ray launching in a mixed environment (20) by using adaptive ray expansion mechanisms can include a memory (204) coupled to a processor (202). The processor can select (602) a target area within the mixed environment and modify (604) the propagation properties of the adaptive ray expansion mechanisms according to characteristics classified for the target area. The processor can further classify characteristics for the target area by transmitting and reflecting rays for indoor building regions and for outdoor building regions. The number of bounces or a power level threshold assigned to a transmitted ray is a function of the environment where it propagates. The simulation tool can determine the target area or a region of interest by using a global positioning service device (230) externally attached to a device performing functions of the simulation tool.
    • 具有增强的精度和速度的方法(600)和模拟工具(200)可以包括耦合到处理器(202)的存储器(204)的模拟,其利用自适应射线扩展机构在混合环境(20)中使用射线发射进行模拟。 处理器可以选择(602)混合环境内的目标区域,并根据针对目标区域分类的特征修改(604)自适应射线扩展机构的传播特性。 处理器可以通过传输和反射室内建筑区域和室外建筑区域的射线来进一步对目标区域的特征进行分类。 分配给发射光线的反弹次数或功率电平阈值是其传播的环境的函数。 仿真工具可以通过使用外部连接到执行仿真工具的功能的设备的全球定位服务设备(230)来确定目标区域或感兴趣区域。
    • 13. 发明申请
    • Method and system for identifying material composition based upon polarization trajectories
    • 基于极化轨迹识别材料组成的方法和系统
    • US20070143036A1
    • 2007-06-21
    • US11296083
    • 2005-12-07
    • Glafkos StratisEric EatonSalvador Sibecas
    • Glafkos StratisEric EatonSalvador Sibecas
    • G01N31/00
    • G01N23/00
    • A system and method for determining a most likely material composition of an object (102). At least one respective stored radiation polarization transformation (500) is stored for at least one material composition at a plurality of wavelengths. A transmitted electromagnetic signal (112) with at least one wavelength within the plurality of wavelengths and that has a predetermined transmitted polarization profile is transmitted. The transmitted signal (112) encounters an object (102) and is received as at least one received signal (116, 118). Processing determines a respective received polarization for each of the at least one wavelength of the received signal (116, 118), determines a respective calculated polarization transformation between the transmitted polarization profile and the received polarization of the respective wavelength, for each of the at least one wavelength,. The processing also compares the respective calculated polarization transformations to the at least one respective stored radiation polarization transformations (500) for at least one of the plurality of material compositions and based on those comparisons, estimates a most likely material composition for the object (102).
    • 一种用于确定物体(102)的最可能的材料组成的系统和方法。 对于多个波长的至少一种材料组合物存储至少一个相应的存储的辐射偏振变换(500)。 传输具有多个波长内的至少一个波长并且具有预定的透射偏振曲线的透射电磁信号(112)。 所发送的信号(112)遇到对象(102)并被接收为至少一个接收信号(116,118)。 对于接收信号(116,118)的至少一个波长中的每一个,处理确定相应的接收极化,确定至少为每个波长的所发送的偏振曲线和相应波长的接收偏振之间的相应计算的偏振变换 一个波长。 该处理还将针对多个材料组合物中的至少一个的各个计算的偏振变换与至少一个相应的存储的辐射极化转换(500)进行比较,并且基于这些比较,估计对象(102)的最可能的材料组成, 。
    • 14. 发明授权
    • System and method to improve RF simulations
    • 改进RF仿真的系统和方法
    • US08165095B2
    • 2012-04-24
    • US11948752
    • 2007-11-30
    • Glafkos StratisAlexander BijamovCelestino A. CorralSalvador Sibecas
    • Glafkos StratisAlexander BijamovCelestino A. CorralSalvador Sibecas
    • H04W4/00H04W16/32H04Q7/20
    • H01Q1/242
    • A system (100) and method (400) for improving Radio Frequency (RF) Antenna Simulation is provided. The method can include determining (402) a proximity of an antenna (250) to a scattering structure (210), determining (410) a switching distance to the scattering structure that establishes when to switch the antenna on (416) and off (418) from a composite antenna pattern to a free space antenna pattern, and predicting RF coverage of the antenna responsive to the switching. The switching distance can be a function of a material type and a surface geometry of the scattering structure and a wavelength of the antenna. The method can also include evaluating a sensory mismatch in the antenna, and using a composite antenna pattern corresponding to the sensory mismatch.
    • 提供了一种用于改善射频(RF)天线模拟的系统(100)和方法(400)。 该方法可以包括确定(402)天线(250)与散射结构(210)的接近度,确定(410)确定何时切换天线(416)和关闭(416)和关闭(418)的散射结构的切换距离 )从复合天线图案到自由空间天线方向图,并且响应于切换来预测天线的RF覆盖。 切换距离可以是散射结构的材料类型和表面几何形状以及天线的波长的函数。 该方法还可以包括评估天线中的感觉失配,以及使用对应于感觉不匹配的复合天线方向图。
    • 15. 发明申请
    • SYSTEM AND METHOD TO IMPROVE RF SIMULATIONS
    • 改进射频模拟的系统和方法
    • US20090140949A1
    • 2009-06-04
    • US11948752
    • 2007-11-30
    • Glafkos StratisAlexander BijamovCelestino A. CorralSalvador Sibecas
    • Glafkos StratisAlexander BijamovCelestino A. CorralSalvador Sibecas
    • H01Q3/24
    • H01Q1/242
    • A system (100) and method (400) for improving Radio Frequency (RF) Antenna Simulation is provided. The method can include determining (402) a proximity of an antenna (250) to a scattering structure (210), determining (410) a switching distance to the scattering structure that establishes when to switch the antenna on (416) and off (418) from a composite antenna pattern to a free space antenna pattern, and predicting RF coverage of the antenna responsive to the switching. The switching distance can be a function of a material type and a surface geometry of the scattering structure and a wavelength of the antenna. The method can also include evaluating a sensory mismatch in the antenna, and using a composite antenna pattern corresponding to the sensory mismatch.
    • 提供了一种用于改善射频(RF)天线模拟的系统(100)和方法(400)。 该方法可以包括确定(402)天线(250)与散射结构(210)的接近度,确定(410)确定何时切换天线(416)和关闭(416)和关闭(418)的散射结构的切换距离 )从复合天线图案到自由空间天线方向图,并且响应于切换来预测天线的RF覆盖。 切换距离可以是散射结构的材料类型和表面几何形状以及天线的波长的函数。 该方法还可以包括评估天线中的感觉失配,以及使用对应于感觉不匹配的复合天线方向图。
    • 16. 发明授权
    • Method and system for identifying material composition based upon polarization trajectories
    • 基于极化轨迹识别材料组成的方法和系统
    • US07333897B2
    • 2008-02-19
    • US11296083
    • 2005-12-07
    • Glafkos StratisEric T. EatonSalvador Sibecas
    • Glafkos StratisEric T. EatonSalvador Sibecas
    • G01N31/00
    • G01N23/00
    • A system and method for determining a most likely material composition of an object. At least one respective stored radiation polarization transformation is stored for at least one material composition at a plurality of wavelengths. A transmitted electromagnetic signal with at least one wavelength within the plurality of wavelengths and that has a predetermined transmitted polarization profile is transmitted. The transmitted signal encounters an object and is received as at least one received signal. Processing determines a respective received polarization for each of the at least one wavelength of the received signal, determines a respective calculated polarization transformation between the transmitted polarization profile and the received polarization of the respective wavelength, for each of the at least one wavelength. The processing also compares the respective calculated polarization transformations to the at least one respective stored radiation polarization transformations for at least one of the plurality of material compositions and based on those comparisons, estimates a most likely material composition for the object.
    • 一种用于确定物体的最可能的材料组成的系统和方法。 对于多个波长的至少一种材料组合存储至少一个相应的存储的辐射偏振变换。 传输具有多个波长内的至少一个波长并且具有预定的透射偏振曲线的透射电磁信号。 发送的信号遇到一个对象,并被接收为至少一个接收信号。 处理确定接收信号的至少一个波长中的每一个的相应的接收极化,确定针对所述至少一个波长中的每个波长的所发送的偏振曲线和相应波长的接收极化之间的相应计算的偏振变换。 该处理还将针对至少一个材料组合物的至少一个相应的存储的辐射极化转换相对于所计算的偏振变换进行比较,并且基于这些比较,估计对象的最可能的材料组成。
    • 17. 发明申请
    • Method and system for combined polarimetric and coherent processing for a wireless system
    • 用于无线系统的组合极化和相干处理的方法和系统
    • US20070047678A1
    • 2007-03-01
    • US11215672
    • 2005-08-30
    • Salvador SibecasEric EatonGlafkos Stratis
    • Salvador SibecasEric EatonGlafkos Stratis
    • H04L27/06H04L1/02H04B1/10
    • H04L5/023H04B1/7115H04B1/7117H04B7/10H04L27/2647
    • A combined polarimetric and coherent processing receiver (2300) can include at least one antenna (730 and 740), at least one receiver front end (700 and 704), a multipath processor (702, 706, and 714), a polarimetric signal processor (708), and a coherent processor (712). The multipath processor can be a plurality of correlators (702 and 706) coupled to the receiver front end(s) and can process the desired signal arriving from multiple paths coupled to the receiver. The polarimetric signal processor which can include a plurality of adaptive polarimetric filters (710) can be coupled to the multipath processor and can polarimetrically filter signals that are distinguishable from the desired signal. The coherent processor can be coupled to the polarimetric signal processor and can coherently combine the polarimetric filtered signal. The coherent processor can include time varying complex coefficients (714) and a signal combiner (716).
    • 组合的偏振和相干处理接收器(2300)可以包括至少一个天线(730和740),至少一个接收器前端(700和704),多路径处理器(702,706和714),偏振信号处理器 (708)和相干处理器(712)。 多路径处理器可以是耦合到接收器前端的多个相关器(702和706),并且可以处理从耦合到接收器的多个路径到达的期望信号。 可以包括多个自适应偏振滤光器(710)的偏振信号处理器可以耦合到多路径处理器,并且可以偏振地滤除与期望信号可区分的信号。 相干处理器可以耦合到偏振信号处理器,并且可以相干地组合偏振滤波信号。 相干处理器可以包括时变复系数(714)和信号组合器(716)。
    • 20. 发明授权
    • WLAN communication system and method with mobile base station
    • WLAN通信系统和方法与移动基站
    • US07593718B2
    • 2009-09-22
    • US10334383
    • 2002-12-31
    • Paul E. GordayRobert M. GordaySalvador Sibecas
    • Paul E. GordayRobert M. GordaySalvador Sibecas
    • H04L12/58
    • H04W4/12H04W84/005H04W84/12
    • A WLAN communication system (10) and method employs mobile WLAN base stations (16) that include WLAN transceivers (26) and memory (30) for storing received messages from one or more mobile WLAN devices (12a-12n). The mobile WLAN base stations (16) serve as moving message carriers or message repeaters of messages for the mobile WLAN devices. In one embodiment, a mobile WLAN base station (16) receives messages transmitted by several mobile WLAN devices (12a-12n), temporarily stores the received messages, and delivers the stored messages to a fixed WLAN base station or another mobile WLAN base station when the mobile WLAN base station (16) moves to within communication range of the applicable fixed or other mobile WLAN base station.
    • WLAN通信系统(10)和方法采用移动WLAN基站(16),其包括用于存储来自一个或多个移动WLAN设备(12a-12n)的接收到的消息的WLAN收发器(26)和存储器(30)。 移动WLAN基站(16)用作用于移动WLAN设备的消息的移动消息载体或消息中继器。 在一个实施例中,移动WLAN基站(16)接收由若干移动WLAN设备(12a-12n)发送的消息,临时存储所接收的消息,并且将存储的消息传送到固定的WLAN基站或另一个移动WLAN基站, 移动WLAN基站(16)移动到可应用的固定或其他移动WLAN基站的通信范围内。