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    • 2. 发明授权
    • Digital compressive receiver
    • 数字压缩接收机
    • US4270209A
    • 1981-05-26
    • US101259
    • 1979-12-07
    • Damian F. Albanese
    • Damian F. Albanese
    • H03H17/02H03J7/32H03H15/00H03K3/84
    • H03J7/32H03H17/0254
    • A compressive receiver for developing a series of time-based identifying pulses corresponding to discrete received signals having various frequencies within a predetermined band of surveillance. A multiple local oscillator function is included, effectively dividing the predetermined band of interest into small frequency increments, each of these local oscillator signals being coded by a pseudo-random coded sequence (bi-phase code) of maximal length. Each frequency increment thus developed is coded by this sequence delayed by one bit duration as compared to that applied to the local oscillator frequency immediately preceding it. A mixer receiving input signals in the band of interest, and also the multiple local oscillator signals thus generated and coded, has its output processed by a passive correlator which provides pulses at times determined by the frequencies extant in the input signal.
    • 一种用于开发一系列基于时间的识别脉冲的压缩接收器,其对应于在预定监视带内具有各种频率的离散接收信号。 包括多个本地振荡器功能,将预定的感兴趣频带有效地划分为小的频率增量,这些本地振荡器信号中的每一个被最大长度的伪随机编码序列(双相码)编码。 这样产生的每个频率增量与延迟一个位持续时间的序列相比,其应用于紧邻其的本地振荡器频率。 在感兴趣的频带中接收输入信号的混频器以及由此产生和编码的多个本机振荡器信号的输出端被无源相关器处理,该无源相关器在由输入信号中存在的频率确定的时间内提供脉冲。
    • 7. 发明授权
    • PRC/FM CW Radar system
    • PRC / FM CW雷达系统
    • US4241347A
    • 1980-12-23
    • US919910
    • 1978-06-28
    • Damian F. AlbaneseAlbert M. Klein
    • Damian F. AlbaneseAlbert M. Klein
    • G01S13/32G01S13/87G01S9/233G01S9/24
    • G01S13/87G01S13/325
    • An FM-CW radar system with improved range discrimination and improved immunity to clutter, chaff, jamming and multiple target environments. The FM-CW apparatus involves a repetitive cycle including a first, constant-transmitted-frequency (monochromatic) transmission, a linear frequency upsweep as a second period and a linear frequency downsweep as a third period within each transmission frame. Pseudorandom coding is superimposed on the FM-CW waveform, a code word duration being selected to place the first Doppler ambiguity beyond the highest expected equivalent target velocity. The resulting range ambiguities are resolved by means of the unambiguous range-determining capability of the FM-CW feature.
    • FM-CW雷达系统具有改进的距离辨识和改善对杂波,谷壳,干扰和多目标环境的免疫力。 FM-CW设备包括重复循环,包括第一,恒定透射频率(单色)传输,作为第二周期的线性频率上升沿和在每个传输帧内作为第三周期的线性频率下降沿。 伪随机编码叠加在FM-CW波形上,选择码字持续时间以将第一多普勒模糊度超出最高预期等效目标速度。 通过FM-CW特征的明确的范围确定能力来解决所产生的范围模糊度。