ESPRIT and Unitary ESPRIT Algorithms for Coexistence of Circular and Noncircular Signals in Bistatic MIMO Radar

摘要: In bistatic multiple input output (MIMO) radar, more number of detectable incident signals and a higher angle estimation performance can be obtained by using conjugate signal parameters via rotational invariance techniques (ESPRITs) with the characteristic noncircularity. The result is achieved under assumption that all received are noncircular. When coexistence noncircular circular signals, ESPRIT will not valuable. Therefore, this paper proposes method joint direction departure (DOD) arrival (DOA) estimation, which appropriate for in MIMO radar. First, data model radar given. Second, we modify use noncircularity characteristic. Third, derive out equation spatially invariant containing DOD DOA information. Last, solve to obtain means total least squares technology. proposed algorithm has three advantages. One it better accuracy than does Another one signals. last be. Results from numerical experiments used show effectiveness our algorithm.