Results 11 to 20 of about 120,318 (255)
A Method for Reducing the Impact of Range Ambiguity
Leida xuebao, 2017 In this paper, we study the clutter suppression problem of an airborne bistatic radar with range ambiguity and propose a novel method to reduce the impact of range ambiguity using geometric configuration.
Wei Min, Li Xiaobo, Wang Li
doaj +2 more sources
Simple approach for extending the ambiguity-free range of dual-comb ranging
Optics Letters, 2021 Dual-comb (DC) ranging is an established method for high-precision and high-accuracy distance measurements. It is, however, restricted by an inherent length ambiguity and the requirement for complex control loops for comb stabilization. Here, we present a simple approach for expanding the ambiguity-free measurement length of DC ranging by exploiting ...
Jakob Fellinger +10 more
openaire +4 more sources
Unambiguous Forward-Looking SAR Imaging on HSV-R Using Frequency Diverse Array
Sensors, 2020 It is a challenge to realize wide swath imaging due to the conflict between Doppler ambiguity and range ambiguity for hypersonic vehicle (HSV) radar. In addition, there are many conditions requiring the forward-looking imaging.
Mengdi Zhang +3 more
doaj +1 more source
Sensors, 2018 The goal of light detection and ranging (LIDAR) systems is to achieve high-resolution three-dimensional distance images with high refresh rates and long distances. In scanning LIDAR systems, an idle listening time between pulse transmission and reception
Gunzung Kim, Yongwan Park
doaj +1 more source
Leida xuebao, 2020 An important issue in a Synthetic Aperture Radar (SAR) system employing Multidimensional Waveform Encoding (MWE) is the fulfillments of Digital BeamForming (DBF) on receive in elevation for a reliable separation of the mutually overlapped echoes from ...
Feng HE +4 more
doaj +1 more source
Method of Range Ambiguity Suppression Combining Sparse Reconstruction and Matched Filtering
Leida xuebao, 2022 To a certain extent, SAR images are affected by range ambiguity due to antenna sidelobe characteristics and pulse operating system. The work of range ambiguity suppression focuses on SAR system design and signal processing.
Meng QI +5 more
doaj +1 more source
Analysis of Range Sidelobe of Pulse Doppler Fuze [PDF]
Hangkong bingqi, 2022 When attacking cruise missile at ultra-low altitude, the pulse Doppler fuze may appear false alarm at the range sidelobe due to range ambiguity. In this paper, the ambiguity graph and the sea echo characteristics of the pulse Doppler fuze are analyzed ...
Yuan Tao, Fan Mingjun
doaj +1 more source
Range convexity and ambiguity averse preferences
Economic Theory, 2001 Submitted - sswp1081 ...
GHIRARDATO, Paolo, MARINACCI, Massimo
openaire +4 more sources
Mitigating Range Ambiguity Method Based on DDMA for SAR Systems
Remote Sensing, 2022 Range ambiguity can lead to deterioration of imagery quality for space-borne synthetic aperture radar (SAR). To solve this problem, we propose a mitigating range ambiguity method based on Doppler division multiple access (DDMA) in this paper.
Yifan Guo +3 more
doaj +1 more source
New calculation methods for echo-ranging ambiguity [PDF]
IEEE Transactions on Information Theory, 1965 Signal ambiguity in correlation echo-ranging may often be calculated by a correlation process on the envelopes of pulse intensity in a frequency-time diagram. The ambiguity for crossing noise ribbons depends only on the ribbon lengths and the angle of crossing.
openaire +2 more sources