Chirp scaling algorithm

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August undefined, 2024

WebJun 27, 2024 · For the problem that the existing chirp scaling algorithm based on the method of series reversion (MSRCSA) needs to approximate the range cell migration … WebFeb 1, 2000 · The paper first explains the common properties of ScanSAR and SpotSAR raw data. Then, a generalized extended chirp scaling (ECS) processing approach is proposed for both, ScanSAR and SpotSAR...

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WebJul 1, 1994 · An improved algorithm called the chirp transform algorithm is proposed, which requires only fast Fourier transforms and multiplications to perform the time scaling operation to alleviate the sampling frequency problem of FMCW SAR. 41 View 1 … WebSep 19, 2005 · A new chirp scaling algorithm based on the fractional Fourier transform Abstract: The fractional Fourier transform (FrFT), which is a generalized form of the well-known Fourier transform, has only recently started to appear in the field of signal processing. grapevine informal communication network

Advanced high-order nonlinear chirp scaling algorithm for

WebTo solve this problem, several efficient algorithms have been developed for sliding spotlight SAR data processing [3,4,5,6,7,8] such as the extended chirp scaling (ECS) algorithm , baseband azimuth scaling algorithm and the two-step processing algorithm as well as its improvements [5,6,7,8], most of which are based on the conventional stripmap ... WebSep 8, 1997 · Presents a new processing algorithm for spotlight SAR data. The spotlight mode offers the potential of achieving very high geometric resolution. The extended chirp scaling (ECS) processing... chips and science act implementation

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基于逆chirp scaling的合成孔径雷达卷积欺骗干扰方法

Web摘要: 针对现有合成孔径雷达 (synthetic aperture radar, SAR)欺骗干扰方法生成虚假场景时难以兼顾逼真度和低计算量的问题，提出了一种基于逆chirp scaling (CS)成像方法的SAR卷积欺骗干扰方法. 该方法利用相位相乘补偿虚假场景内各虚假点的距离徙动，避免了插值运算，在降低求解干扰机频率响应函数计算量的同时，提高了虚假场景的生成精度. 并且通过 … WebOct 1, 2008 · A novel implementation of the polar format algorithm (PFA) using the principle of chirp scaling (PCS) for spotlight synthetic aperture radar (SAR) image formation is addressed. A PFA completely free of interpolation has been achieved in moderate squinted imaging geometry. chips and science act nsfWebAug 1, 2007 · A new fractional chirp scaling algorithm (FrCSA) for highly squinted missile-borne SAR is proposed from high resolution point of view and results indicate that the FrCSA offers better focusing capabilities, greater peak sidelobe ratio (PSLR), and integrated sidelobe ratios (ISLR) by appropriately choosing the rotation angles for the range and … grapevine inn winesburg ohio

"WebJan 22, 2024 · Chirp scaling algorithm Graduate work in university, Client-server arhitecture using Qt, C, Raspberry pi 4, UDP. " - Chirp scaling algorithm

Chirp scaling algorithm

WebJan 1, 2024 · Download Citation Focusing of Wide Swath Range Sweep SAR With Extended Wide Nonlinear Chirp Scaling Algorithm Multi-channel, DBF-based high-resolution wide swath SAR (HRWS-SAR) is dedicated to ... WebMay 23, 2000 · This paper presents a generalized formulation of the extended chirp scaling (ECS) approach for high precision processing of air- and spaceborne SAR data in stripmap, ScanSAR and Spotlight...

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WebThe Chirp-Scaling Algorithm (CSA) is one of the most widely used synthetic aperture radar (SAR) image reconstruction method. It has the bene t of eliminating the interpolation for the range cell migration correction. However, CSA s applicability is limited to straight ight trajectories and monostatic SAR. WebThen, an extended azimuth nonlinear chirp scaling (EANLCS) algorithm with an addition of highly varying residual Doppler centroid correction for BiSAR with curved trajectory is proposed. Simulation results show the effectiveness of the …

WebJul 26, 2024 · The chirp scaling factor is a modification parameter that varies with azimuth spatial frequency. An appropriate choice for the chirp scaling factor eliminates differential range curvature from the SAR signal data. Appropriate selection of the chirp scaling factor removes the azimuth spatial frequency dependence. WebThe conventional polar format algorithm (CPFA) is widely used for synthetic aperture radar (SAR) because of its simple and efficient operations. However, due to its wavefront curvature assumption, the CPFA’s depth-of-focus (DOF) is extremely small, which greatly limits the scene size, especially for high-resolution and highly squinted (HRHS) …

WebAug 23, 2013 · Chirp Scaling Algorithms for SAR Processing The chirp scaling SAR processing algorithm is both accurate and efficient. Successful implementation requires … WebDec 31, 2012 · TL;DR: A 2-D nonlinear chirp scaling algorithm (2-D NCSA) based on optimal azimuth polynomial compensation is proposed to realize high squint GEO SAR imaging and computer simulations for different orbital positions validate the effectiveness of the proposed algorithm.

WebAbstract: Aiming at the problem that it is difficult to balance the fidelity and low computation when generating false scenes by existing synthetic aperture radar …

WebThe chirp scaling algorithm (CSA) was developed specifically to eliminate the interpolator used for RCMC [1]. It is based on a scaling principle described by Papoulis … chips and science act legislationWebIn addition, the modified chirp scaling function is proposed to complete the RCM correction and the azimuth compression is operated in frequency domain. Finally, simulation and … grapevine inspection portalWebNov 11, 2010 · Extended NCS Based on Method of Series Reversion for Imaging of Highly Squinted SAR Abstract: In the case of high range resolution and squint angle, current chirp scaling algorithm (CSA) and nonlinear CSA (NCSA) have a … grapevine injury lawyerWeb微信公众号中科院空天院研究生会介绍：中国科学院空天信息创新研究院研究生会官方公众平台，及时发布空天院研究生会最新活动，服务于空天院全体研究生。；空天院科技期刊动态转递（3.6-4.9） chips and science act nvidiaWebThe proposed method contains two stages. Firstly, after RWC processing, the main component of range-variant RCM is corrected in the coarse RCMC stage by range chirp … grapevine informationWebThe presented approach consists of the range and azimuth scaling of the polar samples, in which only fast Fourier transforms (FFTs) and complex vector multiplications are … grapevine insecticideWebAug 21, 1993 · The chirp scaling SAR processing algorithm is both accurate and efficient. Successful implementation requires proper selection of the interval of output samples, which is a function of the chirp interval, signal sampling rate, and signal … chips and science act law firm