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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >A noise insensitive solution to an ambiguity problem in spectral estimation
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A noise insensitive solution to an ambiguity problem in spectral estimation

机译：频谱估计中模糊性问题的噪声不敏感解决方案

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摘要

The instantaneous frequency measurement (IFM) receiver is capable of measuring the center frequency of single frequency pulses over a wide range (bandwidth) of center frequencies. Because of various constraints, the frequency resolution requirement results in long correlator delay times that reduce the single correlator bandwidth. A large bandwidth can be achieved only if two or more correlators are used. The problem of estimating frequency is then reduced to the simultaneous congruence problem of number theory. A design procedure is presented for solving the congruence problem for a given amount of noise protection, a stated frequency resolution, a minimum bandwidth, and a fixed level of precision (bits) in the IFM receiver.
机译：瞬时频率测量（IFM）接收器能够在中心频率的宽范围（带宽）内测量单个频率脉冲的中心频率。由于各种限制，频率分辨率要求导致较长的相关器延迟时间，从而缩短了单个相关器带宽。只有使用两个或多个相关器，才能实现大带宽。然后将估计频率的问题简化为数论的同时一致性问题。提出了一种设计程序，用于解决IFM接收机中给定数量的噪声保护，规定的频率分辨率，最小带宽和固定精度（位）的一致性问题。

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