专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07174179B2 Methods and apparatus for mitigating rain fading over SATCOM links via information throughput adaptation 有权
标题翻译：通过信息吞吐量适应来减轻SATCOM链路上的雨衰的方法和装置
公开(公告)号：US07174179B2
公开(公告)日：2007-02-06
申请号：US10214308
申请日：2002-08-08
申请人： Lawrence W. Krebs , Robert J. Sims , Ronald C. Bruno , Christopher Jason Berger , Ronald H. Pawlikowski, Jr.
发明人： Lawrence W. Krebs , Robert J. Sims , Ronald C. Bruno , Christopher Jason Berger , Ronald H. Pawlikowski, Jr.
IPC分类号： H04B7/01
CPC分类号： H04L1/0015 , H04B7/18582 , H04L1/0003 , H04L1/0009
摘要： A remote communications terminal accesses a terrestrial network or information source via a SATCOM link with an earth station hub linked to the network or information source. Information throughput adaptation (ITA) is employed on the SATCOM link to maximize information throughput over the SATCOM link while ensuring acceptable signal quality under varying rain fading conditions. Sufficient power margin is built into the SATCOM link such that, under severe rain fading conditions, the lowest system throughput rate still provides acceptable signal quality. Under lesser rain fading conditions, the data throughput rate is increased via more bandwidth efficient modulation and coding schemes permitted by the higher signal quality which results from greater power margin. The earth station hub and remote terminals monitor the signal quality and communicate to adaptively adjust the modulation and coding used on the forward and return links to maximize information throughput under varying rain fading conditions.
摘要翻译：远程通信终端通过与链接到网络或信息源的地球站集线器的SATCOM链路接入地面网络或信息源。在SATCOM链路上采用信息吞吐量适配（ITA），以在SATCOM链路上最大化信息吞吐量，同时确保在不同的降雨条件下可接受的信号质量。 SATCOM链路内置足够的功率余量，使得在严酷的降雨条件下，最低的系统吞吐率仍能提供可接受的信号质量。在较小的降雨条件下，通过更高的信号质量允许的更多带宽有效的调制和编码方案来提高数据吞吐率，这是由于功率裕度较大而导致的。地球站集线器和远程终端监控信号质量并进行通信，自适应地调整前向和后退链路上使用的调制和编码，以最大限度地提高不同降雨条件下的信息吞吐量。

2. 发明授权

US06538601B2 Hybrid system for position determination by a mobile communications terminal 失效
公开(公告)号：US06538601B2
公开(公告)日：2003-03-25
申请号：US09880807
申请日：2001-06-15
申请人： Ronald C. Bruno , Leonard Schuchman
发明人： Ronald C. Bruno , Leonard Schuchman
IPC分类号： H04B7185
CPC分类号： G01S19/12 , G01S5/0027 , G01S5/0045 , G01S19/05 , G01S19/258 , G01S2205/008
摘要： A mobile unit includes a network receiver, such as a GSM telephone, for communication with a wireless network, and a navigation receiver, such as a global positioning system (GPS) receiver for receiving navigation signals. The navigation receiver includes a vector delay lock loop (VDLL) that receives information concerning the navigation sources, such as satellite data messages, transmitted over a common broadcast channel of the wireless network, and receives navigation signals from the navigation receiver. The VDLL uses the navigation signals received from navigation sources that are not obscured and uses satellite data messages broadcast over the wireless network to track a navigation signal that is received only intermittently due, for example, to the navigation source being obscured from view of the mobile unit.

3. 发明授权

US5459469A Air traffic surveillance and communication system 失效
标题翻译：空中交通监控通信系统
公开(公告)号：US5459469A
公开(公告)日：1995-10-17
申请号：US192327
申请日：1994-02-04
申请人： Leonard Schuchman , Ronald C. Bruno , John Kefaliotis , Steve Greenberg , Edward J. Zakrzewski
发明人： Leonard Schuchman , Ronald C. Bruno , John Kefaliotis , Steve Greenberg , Edward J. Zakrzewski
IPC分类号： G08G5/00 , G01S1/00 , G01S7/00 , G01S13/74 , G01S13/76 , G01S13/86 , G01S13/91 , G01S13/93 , G01S19/15 , G01S19/35 , G01S19/48 , H04B7/26
CPC分类号： G01S19/35 , G01S13/765 , G01S13/91 , G01S19/15 , H04B7/18506 , G01S13/767 , G01S13/86 , G01S7/003
摘要： An air traffic surveillance and communication system for air traffic controllers, includes a plurality of ground based first radio transceivers located in specific geographic sectors, respectively, and having a first frequency channel for supporting party-line digital voice and a second frequency channel dedicated to supporting a digital data channel for down-linking dependent surveillance data and for both up-link and down-link data communications. The first and second frequency channels are paired such that each time a frequency change is commanded by the ground both the first and second frequency channels will be automatically tuned to a new air-ground frequency paid. The system also includes a plurality of aircraft based second digital radio transceivers, one located in each aircraft. Each second radio transceiver has corresponding first and second frequency channels and a navigational data source on each aircraft. The navigational data source incorporates triply redundant GPS receivers for producing highly accurate aircraft navigation data selected from aircraft latitude, longitude, altitude, speed, heading and glide data which is coupled to the respective aircraft transceiver for transmission on said second channel to at least one of the plurality of ground based first radio transceivers. Each ground based first radio transceiver has a communication controller for formatting up-link data and separating down-linked surveillance data and disseminating same to air traffic controllers in the sectors of said aircraft. In a preferred embodiment, in a TDMA format with digital radio transceiver operates with a 12.5 kHz spacing, differential QPSK signal modulation is used and each broadcast is by short transmission bursts having a guard band signal preamble and a management/user data field.
摘要翻译：一种用于空中交通管制员的空中交通监视和通信系统，分别包括位于特定地理区域的多个基于地面的第一无线电收发机，并具有用于支持派对线路数字话音的第一频道和专用于支持用于下行链接相关监视数据和用于上行链路和下行链路数据通信的数字数据信道。第一和第二频道成对，使得每次由地面命令频率改变时，第一和第二频道将被自动调谐到支付的新的空地频率。该系统还包括多个基于飞机的第二数字无线电收发器，一个位于每个飞行器中。每个第二个无线电收发器具有对应的第一和第二频道和每个飞机上的导航数据源。导航数据源包含三重冗余GPS接收器，用于产生从航空器纬度，经度，高度，速度，航向和滑翔数据中选择的高度精确的飞行器导航数据，其耦合到相应的飞行器收发器以在所述第二通道上传输至多个基于地面的第一无线电收发器。每个基于地面的第一个无线电收发器具有通信控制器，用于格式化上行链路数据并分离下行链路的监视数据，并将其传播到所述飞行器的扇区中的空中交通管制员。在优选实施例中，在具有数字无线电收发机的TDMA格式中，以12.5kHz间隔进行操作，使用差分QPSK信号调制，并且每个广播是具有保护频带信号前导码和管理/用户数据字段的短传输脉冲串。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式