公开(公告)号：US5554992A

公开(公告)日：1996-09-10

申请号：US462526

申请日：1995-06-05

申请人： Joe M. Toth ,  Kenneth E. Nuedorf

发明人： Joe M. Toth ,  Kenneth E. Nuedorf

IPC分类号： G01S7/06 ,  G01S7/295 ,  G01S7/293 ,  G01S7/04

CPC分类号： G01S7/295 ,  G01S7/068

摘要： A radar scan conversion from radar data in polar coordinates to radar data in rectangular coordinates is employed to supply (x,y) coordinate data to a display, which has variable azimuthal pixel resolution that increases from the center of the display to its periphery. An aggregate radial scan pattern is generated on the display that consists of a plurality of radials each of which have active lengths that span one or more of a plurality of selected boundary resolution zones of the display. These zones are defined by a series of different hyperbolically-based resolution boundaries which define resolution zones of increasing azimuthal resolution values as the zones extend further from the center of said display towards the periphery of said display. The number of radials that are generated on said display match the average azimuthal resolution of said display for each zone. A process wherein such aggregate radial scan pattern is formed such that the number of radials in each zone from the outermost zone to the center of said display is such that each zone is related to twice as many radials as is its next innermost neighboring zone.

摘要翻译： 采用从极坐标雷达数据到直角坐标的雷达数据的雷达扫描转换，将（x，y）坐标数据提供给显示器，该显示器具有从显示中心向其周边增加的方位角像素分辨率。 在显示器上生成聚合的径向扫描图案，其由多个径向组成，每个径向具有跨越显示器的多个选定边界分辨率区域中的一个或多个的活动长度。 这些区域由一系列不同的基于双曲线的分辨率边界限定，当界面从所述显示器的中心向所述显示器的周边进一步延伸时，所述分辨率界限定义了增加的方位分辨率值的分辨率区域。 在所述显示器上产生的径向数与每个区域的所述显示器的平均方位角分辨率相匹配。 一种其中形成这种聚集的径向扫描图案的过程，使得从最外区域到所述显示器中心的每个区域中的径向数目使得每个区域与其下一个最内邻近区域的两倍的径向相关。

公开(公告)号：US5563550A

公开(公告)日：1996-10-08

申请号：US520357

申请日：1995-08-28

申请人： Joe M. Toth

发明人： Joe M. Toth

IPC分类号： G01S7/285 ,  H03B19/00 ,  H03D1/22 ,  H03D9/02 ,  H04L27/06 ,  H03D1/00 ,  H03D1/02

CPC分类号： H03D1/22 ,  G01S7/285 ,  H04L27/06 ,  H03B19/00 ,  H03D9/02

摘要： A demodulation system extracts data from an input amplitude modulated signal electromagnetic wave with a signal multiplying means that has two input terminals both of which are coupled to receive the input amplitude modulated signal. An output terminal of the multiplying means provides an output signal which is the instantaneous square of the input amplitude modulated signal. A lowpass filter is coupled to the output terminal of the signal multiplying means to reject at least twice the carrier frequency 2(.omega..sub.c) and higher frequency components, and to pass the second harmonic and lower frequencies of the modulation signal 2(.omega..sub.m(max)) to provide a filtered signal that is representative of the square of the amplitude modulation of the input signal. This demodulation method approaches ideal square law detection with power measurement of the input amplitude modulated signal. The filtered signal is supplied to an analog-to-digital converter to supply a digital data output. The signal may optionally be coupled from the lowpass filter through a square root circuit.

摘要翻译： 解调系统利用信号乘法装置从输入幅度调制信号电磁波提取数据，该信号乘法装置具有两个输入端，两个输入端耦合以接收输入幅度调制信号。 乘法装置的输出端提供作为输入幅度调制信号的瞬时平方的输出信号。 低通滤波器耦合到信号倍增装置的输出端，以至少抑制载波频率2（ωc）和较高频率分量的两倍，并使调制信号2的二次谐波和较低频率（ωm max））以提供表示输入信号的幅度调制的平方的滤波信号。 该解调方法通过输入幅度调制信号的功率测量方法接近理想的平方律检测。 经滤波的信号被提供给模数转换器以提供数字数据输出。 信号可以可选地从低通滤波器通过平方根电路耦合。