A Joint Space-Time Array for Communication Signals-Based on a Moving Platform and Performance Analysis

Abstract

A joint space-time array for communication signals is constructed in this paper to settle the contradiction between the performance of angle estimation and the array aperture. It introduces Doppler information caused by platform motion into the signal processing to obtain favorable performance with limited array aperture. We analyze the theoretical performance in the aspects of distinguishable source number, spatial resolution and Cramér-Rao bound (CRB), respectively. Both theoretical analysis and simulation results demonstrate that the proposed space-time array can give rise to a significant enhancement in achievable array performance.

A range-angle estimation algorithm for array FMCW radar based on spatial and temporal sparse extending

“…The focus of this paper is to extend both the spatial and temporal domains and achieve high-precision angle estimation by sampling fewer times. In literature [9], Doppler information caused by the moving platform is introduced into signal processing, resulting in higher angle estimation under the condition of fewer array elements. However, the expansion in the time domain is uniform, and the increase in aperture is limited.…”