CAJ | 학술논문

针对传统多通道干涉仪和阵列测向系统复杂、易受通道间幅相不一致性影响，分析了旋转长基线干涉仪（RLBI ）测向的两类相位差观测模型，进而推导了无模糊测向条件，提出了一种基于多假设伪线性迭代最小二乘（MHPILS ）的测向方法，并分析了测向误差克拉美-罗下限（CRLB ）和均方误差（MSE ）。仿真结果表明该方法运算量适中，测向精度可接近CRLB 。
침대전통다통도간섭의화진렬측향계통복잡、역수통도간폭상불일치성영향，분석료선전장기선간섭의（RLBI ）측향적량류상위차관측모형，진이추도료무모호측향조건，제출료일충기우다가설위선성질대최소이승（MHPILS ）적측향방법，병분석료측향오차극랍미-라하한（CRLB ）화균방오차（MSE ）。방진결과표명해방법운산량괄중，측향정도가접근CRLB 。
Due to the complexity and amplitude-phase inconsistencies in traditional multi-channel interferometer and array , two phase difference observation models for direction finding based on the rotated long baseline interferometer (RLBI )is analyzed . The unambiguous direction finding conditions for the proposed models are derived .A multiple hypothesis pseudolinear iteration least square(MHPILS)algorithm is proposed .The Cramer-Rao low bound(CRLB)and mean square error (MSE)is also analyzed .The simulation results show that this method achieves moderate computation amount and can attain the CRLB .