Title

A random wave method for detecting phase imbalance in a coherent radar receiver

Authors

Zhenni Wang, Michigan Technological UniversityFollow
Alexander Kostinski, Michigan Technological UniversityFollow

Document Type

Response or Comment

Publication Date

12-1-1993

Abstract

The question of monitoring the angle between the in-phase (I) and quadrature (Q) channels of a coherent radar receiver is considered in this paper. Random interference-type scattering (e.g., rain echo) is assumed so that the received signal is a random phasor sum. It is also assumed that I and Q voltages have a (90 + ϕ₀) phase difference. The effects of nonzero phase imbalance ϕ₀ on the I and Q statistics are examined. Joint I and Q as well as amplitude and phase probability distributions are derived. It is shown that the cross-correlation coefficient at zero lag between I and Q time series is proportional to ϕ₀, which provides a simple algorithm to detect the phase imbalance. This is verified by Monte Carlo simulations.

Publisher's Statement

Copyright 1993 American Meteorological Society. Publisher’s version of record: https://doi.org/10.1175/1520-0426(1993)010<0887:ARWMFD>2.0.CO;2

Publication Title

Journal of Atmospheric and Oceanic Technology

Recommended Citation

Wang, Z., & Kostinski, A. (1993). A random wave method for detecting phase imbalance in a coherent radar receiver. Journal of Atmospheric and Oceanic Technology, 10(6), 887-891. http://doi.org/10.1175/1520-0426(1993)010<0887:ARWMFD>2.0.CO;2
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/265

Version

Publisher's PDF