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Nonlinear interferometric imaging sensor

机译:非线性干涉成像传感器

摘要

A new radar is disclosed possessing desirable attributes for close range, short event time, high data rate sensing and data collection applications. A Continuous Wave (CW) or very high Pulse Repetition Frequency (PRF) Pulse based waveform, nominally with very high duty cycle (i.e. highly range aliased), is amplified and transmitted from one antenna, and after reflection from targets of interest, is received by one or a plurality of receive antennas. Both transmit and receive are optimally synchronous and phase coherent. The received signals are down converted to baseband leaving only the Doppler frequency from the targets of interest. These Doppler frequencies change over Fast Time as a function of the specific target trajectory and speed. A bank of time dependent correlation filters, each tuned to a different trajectory hypothesis, are used to integrate up the Doppler Signal for targets traveling the hypothesized trajectory, and decorrelated those that are not.
机译:公开了一种新雷达,其具有用于近距离,短事件时间,高数据速率感测和数据收集应用的期望属性。从一根天线放大并发射名义上具有非常高的占空比(即,高范围混叠)的连续波(CW)或非常高的脉冲重复频率(PRF)基于脉冲的波形,并在从感兴趣的目标反射后接收一个或多个接收天线。发射和接收都是最佳同步和相位相干的。接收到的信号被降频转换为基带,仅留下目标目标的多普勒频率。这些多普勒频率随特定目标轨迹和速度的变化在快速时间内变化。使用一组依赖于时间的相关滤波器,每个滤波器都调整到不同的轨迹假设,用于为经过假设轨迹的目标积分多普勒信号,并对不相关的目标进行解相关。

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