云南高校图书馆联盟文献共享服务平台- AMBIGUITY

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Multi-GNSS Fusion Real-Time Kinematic Algorithm Based on Extended Kalman Filter Correction Model for Medium-Long Baselines: 《Journal of Shanghai Jiaotong university(Science)》2024年第6期1191-1201,共11页XIA Yang REN Guanghui WAN Yuan MAO Xuchu; In the case of a medium-long baseline, for real-time kinematic (RTK) positioning, the fixed rate of integer ambiguity is low due to the distance between the base station and the observation station. Moreover, the atmo...; 关键词：real-time kinematic(RTK) extended Kalman filter(EKF) BASELINE AMBIGUITY ionospheric delay tropospheric delay

Low-Complexity Integrated Super-Resolution Sensing and Communication with Signal Decimation and Ambiguity Removal: 《ZTE Communications》2024年第3期48-55,共8页DAI Qianglong ZHOU Zhiwen XIAO Zhiqiang ZENG Yong YANG Fei CHEN Yan; supported by the National Natural Science Foundation of China under Grant No.62071114.; Integrated sensing and communication(ISAC)is one of the main usage scenarios for 6G wireless networks.To most efficiently utilize the limited wireless resources,integrated super-resolution sensing and communication(IS...; 关键词：ISSAC sparse decimation range ambiguity two-stage approach

Orthogonal waveform design with fractional programming on the ambiguity suppression of SAR systems: 《Science China(Information Sciences)》2024年第9期259-275,共17页Yunkai DENG Yongwei ZHANG Zhimin ZHANG Wei WANG Heng ZHANG; supported by National Key Research and Development Program of China(Grant No.2023YFB3904901)。; Waveform diversity(WD)represents a dynamic and transformative technology widely used in radar systems to enhance sensitivity and discrimination capabilities.Recently,WD techniques have been extensively explored for th...; 关键词：synthetic aperture radar(SAR) waveform diversity(WD) ambiguity suppression orthogonal waveform fractional programming power spectrum density(PSD)

Ambiguity function analysis and side peaks suppression of Link16 signal based passive radar被引量：1: 《Journal of Systems Engineering and Electronics》2023年第6期1526-1536,共11页BAI Luyang WANG Jun CHEN Xiaoling; the National Natural Science Foundation of China(61401526).; Link16 data link is the communication standard of the joint tactical information distribution system(JTIDS)used by the U.S.military and North Atlantic Treaty Organization,which is applied as the opportunistic illumina...; 关键词：passive radar ambiguity function LINK16 mismatched filter(MMF)

A novel sparse SAR unambiguous imaging method based on mixed-norm optimization: 《Science China(Information Sciences)》2023年第11期303-304,共2页Hui BI Yufan SONG Yanjie YIN Jingjing ZHANG Wen HONG Yirong WU; supported by National Natural Science Foundation of China(Grant Nos.62271248,61901213);Guangdong Basic and Applied Basic Research Foundation(Grant No.2020B1515120060)。; Sparse synthetic aperture radar(SAR)systems always obtain a wide swath by reducing the pulse repetition frequency(PRF).However,the reduction of PRF will cause azimuth ambiguity,and even lead to failed reconstruction o...; 关键词：SAR PRF AMBIGUITY

A method of improving ambiguity fixing rate for post-processing kinematic GNSS data被引量：2: 《Satellite Navigation》2020年第1期217-229,共13页Xiaohong Zhang Yuxi Zhang Feng Zhu; the National Science Fund for Distinguished Young Scholars(Grant No.41825009);the Funds for Creative Research Groups of China(Grant No.41721003);Changjiang Scholars program.; Global Navigation Satellite System precise positioning using carrier phase measurements requires reliable ambiguity resolution.It is challenging to obtain continuous precise positions with a high ambiguity fixing rate...; 关键词：Kinematic precise positioning Ambiguity resolution Ambiguity domain-based integration(ADBI) Forward-Backward Combination Kalman filter

Target detection method in passive bistatic radar被引量：5: 《Journal of Systems Engineering and Electronics》2020年第3期510-519,共10页CHEN Gang WANG Jun; the National Natural Science Foundation of China(61401526).; Owing to the advantages in detecting the low altitude and stealth target,passive bistatic radar(PBR)has received much attention in surveillance purposes.Due to the uncontrollable characteristic of the transmitted sign...; 关键词：passive bistatic radar(PBR) mismatched filtering ambiguity sidelobe target detection

High precision phase-domain radial velocity estimation for wideband radar systems: 《Journal of Systems Engineering and Electronics》2020年第3期520-526,共7页QI Wei CUI Zijian YAO Huisheng DENG Zhenmiao; the National Natural Science Foundation of China(61471012).; Radial velocity estimation used in wide-band radar systems is investigated.By analyzing the signal of cross-correlation output of adjacent echoes,it is found that the frequency and phase of the cross-correlation outpu...; 关键词：radial velocity estimation AMBIGUITY wideband radar system

Adaptive Robust Filtering Algorithm for BDS Medium and Long Baseline Three Carrier Ambiguity Resolution被引量：7: 《Journal of Geodesy and Geoinformation Science》2020年第2期53-61,共9页Yangjun GAO Zhiwei LV Pengjin ZHOU Zhengyang JIA Lundong ZHANG Dianwei CONG; For classical TCAR(three carrier ambiguity resolution)algorithm is affected by ionospheric delay and measurement noise,it is difficult to reliably fix ambiguity at medium and long baselines.An improved TCAR algorithm ...; 关键词：adaptive robust filter BEIDOU wide-lane narrow-lane AMBIGUITY TCAR

An overview on GNSS carrier-phase time transfer research被引量：4: 《Science China(Technological Sciences)》2020年第4期589-596,共8页ZHANG Ming Lü JinHu BAI ZhengDong JIANG ZhiQi CHEN BoBo; supported in part by the National Key Research and Development Program of China(Grant No.2016YFB0800401);in part by the National Natural Science Foundation of China(Grants Nos.61621003,61532020&11472290)。; Global navigation satellite system(GNSS)carrier phase observations are two orders of higher accuracy than pseudo-range observations,and they are less affected by multipath besides.As a result,the time transfer accurac...; 关键词：carrier phase(CP) TIME TRANSFER day-boundary clock jump AMBIGUITY resolution(AR) MULTI-SYSTEM TIME TRANSFER real-time TIME TRANSFER

AMBIGUITY