Analysis of Left-right Ambiguity in Multichannel Radar Forward-looking Imaging

He, Fangxin; Li, Wenchao; Li, Yang; Li, Zhongyu; Wu, Junjie; Yang, Jianyu

doi:10.1109/radar53847.2021.10027885

Cited by 1 publication

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As early as 1993, the literature [41] proposed the FLMC geometric configuration of antennas placed at equal intervals along the azimuth direction and realised a forward-looking twodimensional imaging algorithm based on linear array. In the literature [42][43][44][45][46][47], a lot of FLMC SAR imaging methods based on linear array have been proposed for the purpose of solving the left-right Doppler ambiguity difficulty. Over the last few years, algorithms for FLMC imaging using MIMO line arrays and phased array line arrays have also been presented [48,49].…”

Section: Introductionmentioning

confidence: 99%

Airborne forward‐looking radar imaging approach via modified propagator method in planar phased array

Yin,

Wang

2024

IET Radar Sonar & Navi

View full text Add to dashboard Cite

Forward‐looking radar imaging is a top priority due to a variety of applications. An airborne forward‐looking radar imaging approach via a modified propagator method (MPM) based on the planar phased array is proposed. It can obtain a better focusing effect without range migration correction. Through the MPM algorithm, the azimuth resolution can be enhanced greatly. Compared with the conventional synthetic aperture radar imaging algorithm, the left‐right ambiguity process can be avoided by generating two‐dimensional spatial spectra. Furthermore, the imaging results of different numbers of elements are given to provide an assessment of the imaging performance. Additionally, the authors proposed to apply the scanning planar phased array configuration to airborne forward‐looking two‐dimensional imaging for the first time. The validity of the method is proven by experiments. The image is more focused. Furthermore, the results of the experiments verify that the proposed method is fit for high‐speed situation and aircraft height variation condition.

show abstract