Method, system and computer program product for tracing software methods
    1.
    发明授权
    Method, system and computer program product for tracing software methods 失效
    用于跟踪软件方法的方法,系统和计算机程序产品

    公开(公告)号:US07904888B2

    公开(公告)日:2011-03-08

    申请号:US10793461

    申请日:2004-03-04

    CPC classification number: G06F11/3636

    Abstract: A method of obtaining trace data with respect to a running software program includes accessing a method in a call stack, the call stack including a sequentially ordered list of methods called during the running of the software program. If the accessed method in the call stack falls between a minimum trace offset and a maximum trace offset where the minimum trace offset and the maximum trace offset define a trace window, obtaining trace data for the method and outputting it to an output stream which is then collected into a trace data storage. If the trace data in the trace data storage meets predetermined adaptation rules then changing the position in the call stack of at least one of the minimum trace offset and the maximum trace offset.

    Abstract translation: 获取关于正在运行的软件程序的跟踪数据的方法包括访问调用堆栈中的方法,所述调用堆栈包括在所述软件程序的运行期间被调用的顺序排列的方法列表。 如果调用堆栈中访问的方法落在最小跟踪偏移量和最大跟踪偏移量之间,其中最小跟踪偏移量和最大跟踪偏移定义了跟踪窗口,则获取方法的跟踪数据并将其输出到输出流 收集到跟踪数据存储中。 如果跟踪数据存储器中的跟踪数据满足预定的适应规则,则改变调用堆栈中的最小迹线偏移和最大迹线偏移中的至少一个的位置。

    Underwater location apparatus
    2.
    发明授权
    Underwater location apparatus 有权
    水下定位仪

    公开(公告)号:US07304911B2

    公开(公告)日:2007-12-04

    申请号:US10528100

    申请日:2003-09-17

    CPC classification number: G01S3/8083 G01S3/801 G01S15/74

    Abstract: Measuring apparatus for providing information on the relative location of a target site which is radiating a target signal that includes a predetermined pulse signal, comprises receiver means for providing a pair of temporally spaced output pulses in response to a single received said predetermined pulse signal and cross-correlation means coupled to said receiver means for cross-correlating said pair of output pulses or signals derived therefrom.

    Abstract translation: 用于提供关于正在辐射包括预定脉冲信号的目标信号的目标位置的相对位置的信息的测量装置包括接收机装置,用于响应于单个接收到的所述预定脉冲信号并交叉地提供一对时间间隔的输出脉冲 - 相关装置,其耦合到所述接收机装置,用于将所述一对输出脉冲或从其导出的信号互相关。

    Communication system for underwater use
    3.
    发明授权
    Communication system for underwater use 有权
    水下通信系统

    公开(公告)号:US07006407B2

    公开(公告)日:2006-02-28

    申请号:US10473754

    申请日:2002-03-28

    Abstract: For digital underwater transmission an information sequence (17) of digital bits is partitioned into a succession of symbols each comprising n bits where n is equal to or greater than one (2n potential symbols), each symbol (19) is replaced (20) a corresponding base code sequence of length m bits and the result (21) is passed to an acoustic transducer after bi-phase modulation (22) on a carrier. The code has good correlation properties, e.g. a pseudo-random maixmal length sequence, a Gold code or a Kasami code, and the value of m/n is at least (32). Preferably the base sequence is cyclically extended at one or both ends prior to modulation, and Solomon Reed redundancy coding (18) is initially applied to the information sequence. The output (23) of modulator (22) may be prefaced (26) by a pair of chirp waveforms (24). Provision is made for Doppler and multi-path correction.

    Abstract translation: 对于数字水下传输,数字比特的信息序列(17)被划分成一系列符号,每个符号包括n个等于或大于一个(2个电位符号)的n个比特,每个符号( 19)被替换(20)长度为m比特的对应的基本码序列,并且结果(21)在载波上的双相位调制(22)之后传递给声学换能器。 代码具有良好的相关性,例如 伪随机maixmal长度序列,Gold码或Kasami码,m / n值至少为(32)。 优选地,基本序列在调制之前在一端或两端循环地延伸,并且所罗门·里德冗余编码(18)最初被应用于信息序列。 调制器(22)的输出(23)可以由一对啁啾波形(24)开始(26)。 提供多普勒和多径校正。

    Underwater communication system
    4.
    发明授权
    Underwater communication system 有权
    水下通信系统

    公开(公告)号:US06980487B2

    公开(公告)日:2005-12-27

    申请号:US10473274

    申请日:2002-03-28

    CPC classification number: H04B11/00 H04B13/02 H04L1/004 H04L27/103

    Abstract: In a digital acoustic transmission device in which a digital sequence (31) is electrically modulated (22) on a carrier cos ωt, the modulated carrier (23) is prefaced with at least two pulse signals (24) of known timing relative to each other and to the modulated digital sequence to provide an output signal (13) for acoustic transmission. The pulse signals indicate to receiver the start of a transmission, and contain Doppler information for resampling the modulated signal prior to demodulation. Where the information sequence is in encoded blocks of equal length, the relationship between successive blocks can be used to update the Doppler information for use with the following block. Channel information can also be derived from the pulse signals and/or blocks for raking the next part of the incoming signal. Preferably the pulse signals have good correlation characteristics. In the embodiments the pulse signals are an immediately successive identical pair of linearly rising chirps.

    Abstract translation: 在其中数字序列(31)在载波cosω上进行电调制(22)的数字声传输装置中,调制载波(23)以相对于彼此的已知定时的至少两个脉冲信号(24)为前置 和调制数字序列,以提供用于声学传输的输出信号(13)。 脉冲信号向接收机指示发射的开始,并且包含用于在解调之前重新采样调制信号的多普勒信息。 在信息序列处于相等长度的编码块中的情况下,可以使用连续块之间的关系来更新用于随后的块的多普勒信息。 信道信息也可以从脉冲信号和/或块导出,用于耙下输入信号的下一部分。 优选地,脉冲信号具有良好的相关特性。 在实施例中,脉冲信号是立即连续的相同的线性上升线性调频对。

    Underwater communications
    5.
    发明授权
    Underwater communications 有权
    水下通信

    公开(公告)号:US08699300B2

    公开(公告)日:2014-04-15

    申请号:US12675668

    申请日:2008-08-26

    CPC classification number: H04B11/00 G01S3/8083

    Abstract: A method of underwater communication between a link initiator and a link receptor, by transmitting a link acquisition waveform from the initiator to the receptor, and establishing communications channel parameters from such a received waveform. Data is then transmitted according to these parameters, which may include range, direction, frequency band and Doppler, with greater efficiency and robustness.

    Abstract translation: 一种链路起始器和链路接收器之间的水下通信的方法,通过从所述发起者发送链路获取波形到所述接收机,以及从所述接收波形建立通信信道参数。 然后根据这些参数传输数据,其可以包括范围,方向,频带和多普勒,具有更高的效率和鲁棒性。

    Underwater Communications
    6.
    发明申请
    Underwater Communications 有权
    水下通信

    公开(公告)号:US20110128822A1

    公开(公告)日:2011-06-02

    申请号:US12675668

    申请日:2008-08-26

    CPC classification number: H04B11/00 G01S3/8083

    Abstract: A method of underwater communication between a link initiator and a link receptor, by transmitting a link acquisition waveform from the initiator to the receptor, and establishing communications channel parameters from such a received waveform. Data is then transmitted according to these parameters, which may include range, direction, frequency band and Doppler, with greater efficiency and robustness.

    Abstract translation: 一种链路起始器和链路接收器之间的水下通信的方法,通过从所述发起者发送链路获取波形到所述接收机,以及从所述接收波形建立通信信道参数。 然后根据这些参数传输数据,其可以包括范围,方向,频带和多普勒,具有更高的效率和鲁棒性。

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