Noisy Simultaneous Signal Parameter Estimation with Generalized Phase Calculation Approaches
Mary Yvonne Lanzerotti, Charles L. A. Cerny, Matthew Current, Richard Kipp Martin · AIAA Scitech 2021 Forum · 2021
View Video Presentation: https://doi.org/10.2514/6.2021-1269.vid This paper presents estimates of weak signal parameters in a noisy radio signal estimation process for the situation in which there are two simultaneous signals with a weak signal that takes on a value of 855 MHz, the signal-to-interference ratio is 10−4, and the weak signal-to- noise ratio takes on three values (20, 30, and 40 dB). Real time estimates are extracted from zero crossing clusters in a generalization of James Tsui’s phase measurement approach for weak signals in the presence of a strong signal. Results are presented for four pairs of zero crossing clusters, 1, 3 , 2, 4 , 3, 5 , and 6, 8 for the the situation in which there are two simultaneous signals. Real-time estimates obtained with this approach are within 1.2 10−4 of the weak signal frequency, and the error is within 120 parts per million of the weak signal he capability to detect simultaneous signals in the presence of noise is desired for tronic warfare receivers.