نتایج جستجو برای: radar antenna

تعداد نتایج: 80514  

2014
Samiran Pramanik Bikas Sinha Chandan Kumar Sarkar

Abstract: The MIMO phased array radar is a theoretical concept for multi-sensor radar planning that combines elements of traditional phased-array radar with the developing technology of multiple-input multiple output (MIMO) radar. Space-time coding (STC) has been shown to play a key role in the design of Phased Array MIMO radar where MIMO radar can achieve improved localization performance by ...

2009
Oral Büyüköztürk Tzu-Yang Yu

A radar nondestructive testing (NDT) technique using an airborne horn antenna operating in the far-field condition is developed for detecting damages such as debonding and concrete cracking in glass fiber reinforced polymer (GFRP)-wrapped concrete columns. The far-field airborne radar (FAR) NDT technique is advantageous for distant measurement in practical applications where contact/nearcontact...

2010
Nirmalendu Bikas Sinha P. K. Sutradhar

The MIMO (multiple-input multiple-output) systems have gained popularity and attracted attention of late for their ability to enhance all areas of system performance. Inspired by the success of MIMO systems in communications, several publications have advocated the concept of new MIMO emerging active sensing radar technology from the system implementation point of view, as well as for signal pr...

2014
Takuya SAKAMOTO Hiroki YAMAZAKI

This paper presents a method of imaging a twodimensional section of a walking person using multiple ultrawideband Doppler radar systems. Although each simple radar system consists of only two receivers, different line-of-sight velocities allow target positions to be separated and located. The signal received using each antenna is processed employing time– frequency analysis, which separates tar...

Journal: :EURASIP J. Adv. Sig. Proc. 2014
Haijiang Wang Ling Yang

In this paper, the application of vector analysis tool in the illuminated area and the Doppler frequency distribution research for the airborne pulse radar is studied. An important feature of vector analysis is that it can closely combine the geometric ideas with algebraic calculations. Through coordinate transform, the relationship between the frame of radar antenna and the ground, under aircr...

Journal: :IEICE Transactions 2012
Takuya Sakamoto Yuji Matsuki Toru Sato

Ultra wideband (UWB) radar is considered a promising technology to complement existing camera-based surveillance systems because, unlike cameras, it provides excellent range resolution. Many of the UWB radar imaging algorithms are based on large-scale antenna arrays that are not necessarily practical because of their complexity and high cost. To resolve this issue, we previously developed a two...

2003
Sonia Furman David E. Hammers Mario Gerla

Research and technology in wireless communication systems such as radar and cellular networks have successfully implemented alternative design approaches that utilize antenna array techniques such as optimum combining, to mitigate the degradation effects of multipath in rapid fading channels. In ad hoc networks, these methods have not yet been exploited primarily due to the complexity inherent ...

2005
Pavel V. Nikitin K. V. S. Rao

This paper presents a method for measuring signal backscattering from an RFID tag and calculating tag radar cross-section (RCS), which depends on the chip input impedance. We present a derivation of a theoretical formula for RFID tag radar cross-section and an experimental RCS measurement method using a network analyzer connected to an antenna in an anechoic chamber where the tag is also locate...

2006
Jesús Sanz-Marcos Jordi J. Mallorquí Albert Aguasca Carlos Ruiz Guillermo Romero

Bistatic radar systems will play a great role in the coming decade since a large number of radar missions are being foreseen. Using existing transmitters, formations of small passive receivers will enhance our capability to gather backscatter information from earth. A bistatic SAR system operates with separated transmitting and receiving antenna and both can follow independent trajectories. If ...

2008
SAID H. IBRAHIM

The demand for higher performance systems that are smaller and have the potential to be more cost effective has lead hardware designers to adopt integration of many components and modules in a package (SOP) or on a chip (SOC). A compact SOP (single-substrate) L-band FMCW HMIC radar module for high-resolution sensor application has been demonstrated. For use with a single transmitreceive antenna...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید