华中科技大学学报（自然科学版）2024，Vol.52Issue(3)：28-34,7.DOI:10.13245/j.hust.240309
多子阵SAS六自由度运动补偿与成像快速算法
Fast algorithm for multiple-receiver synthetic aperture sonar imaging and six-degrees-of-freedom motion compensation
摘要
Abstract
For the issue of the six-degrees-of-freedom(SDOF)motion compensation(MOCO)and the low efficiency of the point-by-point MOCO algorithm,a fast MOCO and imaging range-Doppler(RD)algorithm was proposed for the multiple-receiver synthetic aperture sonar(SAS)with the azimuth-invariant SDOF motion errors.First,the double square root(DSR)form range history was established.Secondly,the DSR form range history was approximated and retained to the fourth-order terms of the azimuth time by the method of Taylor series expansion.On this basis,an analytical two-dimensional frequency spectrum of point target response was derived using the method of series reversion.Finally,the fast MOCO and imaging algorithm was proposed,which can realize the compensation of azimuth-invariant SDOF motion errors and high-resolution imaging synchronously.The results of simulations and accurate experiment data imaging indicate the effectiveness of the proposed algorithm.关键词
合成孔径声纳/运动补偿/成像技术/距离多普勒算法/六自由度运动误差Key words
synthetic aperture sonar/motion compensation/imaging technique/range-Doppler algorithm/six-degrees-of-freedom motion errors分类
信息技术与安全科学引用本文复制引用
田振,钟何平,唐劲松..多子阵SAS六自由度运动补偿与成像快速算法[J].华中科技大学学报（自然科学版）,2024,52(3):28-34,7.基金项目
国家自然科学基金青年基金资助项目(61901503). （61901503）
