Effects of Power Inversion Spatial Only Adaptive Array on GNSS Receiver Measurements

• 来源期刊: 清华大学学报自然科学版（英文版）
• 年，卷（期）: 2018,（2）
• 页码范围: 172-183
• 页数: 12页
• 语种: 英文
• DOI: 10.26599/TST.2018.9010019

摘要

The Spatial Only Processing Power Inversion (SOP-PI) algorithm is frequently used in Global Navigation Satellite System (GNSS) adaptive array receivers for interference mitigation because of its simplicity of implementation.This study investigates the effects of SOP-PI on receiver measurements for high-precision applications.Mathematical deductions show that if an array with a centro-symmetrical geometry is used,ideally,SOP-PI is naturally bias-free;however,this no longer stands when non-ideal factors,including array perturbations and finite-sample effect,are added.Simulations are performed herein to investigate how exactly the array perturbations affect the carrier phase biases,while diagonal loading and forward-backward averaging are proposed to counter the finite-sample effect.In conclusion,whether SOP-PI with a centro-symmetrical array geometry will satisfy the high precision demands mainly depends on the array perturbation degree of the element amplitude and the phase center.