Pub Date : 2014-10-20DOI: 10.1109/USNC-URSI-NRSM.2014.6927957
E. Farr
We introduce here a simple theory of antenna radiation and scattering that fully extends into the time domain a number of standard antenna terms, including gain, realized gain, antenna factor, scattering cross section, and radar cross section. The theory applies to antennas of all feed impedances and feed types, including waveguide feeds, and it applies to antennas embedded in any lossless medium. The approach is analogous to that used to describe circuits with generalized scattering parameters, which permits different characteristic impedances at each port. We identify receiving and transmitting impulse responses, and prove that they always have a simple relationship to each other. We also identify a scattering impulse response that can be applied to either an antenna or an arbitrary scatterer. From these functions, we build a Generalized Antenna Scattering Matrix (GASM). This establishes a formalism that allows one to calculate antenna response under a variety of conditions, including, for example, a mismatched source or load. The approach simplifies and clarifies terminology for characterizing antenna performance in the both the time and frequency domains.
{"title":"A power wave theory of antennas","authors":"E. Farr","doi":"10.1109/USNC-URSI-NRSM.2014.6927957","DOIUrl":"https://doi.org/10.1109/USNC-URSI-NRSM.2014.6927957","url":null,"abstract":"We introduce here a simple theory of antenna radiation and scattering that fully extends into the time domain a number of standard antenna terms, including gain, realized gain, antenna factor, scattering cross section, and radar cross section. The theory applies to antennas of all feed impedances and feed types, including waveguide feeds, and it applies to antennas embedded in any lossless medium. The approach is analogous to that used to describe circuits with generalized scattering parameters, which permits different characteristic impedances at each port. We identify receiving and transmitting impulse responses, and prove that they always have a simple relationship to each other. We also identify a scattering impulse response that can be applied to either an antenna or an arbitrary scatterer. From these functions, we build a Generalized Antenna Scattering Matrix (GASM). This establishes a formalism that allows one to calculate antenna response under a variety of conditions, including, for example, a mismatched source or load. The approach simplifies and clarifies terminology for characterizing antenna performance in the both the time and frequency domains.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115808406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663864
N. Farid, A. Nigam, S. A. E. A. Rahim, S. Hassan, R. Sanusi, A. Rahim
A miniature 40 GHz transceiver and radio front-end designed and simulated using a 0.13-μm RF CMOS process for Radio-over-Fiber applications is presented in this paper. The transceiver employs a direct-conversion architecture. The radio is designed for a frequency division duplex (FDD) communications system. PHY layer data rates as high as 1.5 Gbps on a wireless link are feasible using this radio design. The phase-locked-loop (PLL) and supporting digital circuits however, are not included. The receiver shows a power gain of about 41 dB with a LNA noise figure of 7 dB. The transmitter achieves a conversion gain of about 40.7 dB and an output P1dB of 10.7 dBm.
{"title":"A 40 GHz CMOS transceiver and radio front-end for the customer premise equipment unit of a radio-over-fiber system","authors":"N. Farid, A. Nigam, S. A. E. A. Rahim, S. Hassan, R. Sanusi, A. Rahim","doi":"10.1109/ICUWB.2013.6663864","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663864","url":null,"abstract":"A miniature 40 GHz transceiver and radio front-end designed and simulated using a 0.13-μm RF CMOS process for Radio-over-Fiber applications is presented in this paper. The transceiver employs a direct-conversion architecture. The radio is designed for a frequency division duplex (FDD) communications system. PHY layer data rates as high as 1.5 Gbps on a wireless link are feasible using this radio design. The phase-locked-loop (PLL) and supporting digital circuits however, are not included. The receiver shows a power gain of about 41 dB with a LNA noise figure of 7 dB. The transmitter achieves a conversion gain of about 40.7 dB and an output P1dB of 10.7 dBm.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115316869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663857
K. Ohno, M. Itami, T. Ikegami
This paper discusses the multipath compensation technique for pulse based UWB systems. The RAKE reception is common technique as the multipath compensation technique. The multi-carrier pulse is possible to control the power spectrum density in the frequency domain. In this paper, the iterative RAKE reception by using the multi-carrier pulse is proposed to obtain better reception performance. The root mean square error (MSE) between the ideal received signal and approximated multi-carrier pulse is evaluated. The error becomes smaller by using proposed RAKE reception technique, because the correlation of the template pulse in each RAKE finger can be reduced by the iterative RAKE and the frequency selective fading can be compensated by using the multi-carrier pulse. The bit error rate (BER) performances are also evaluated to show the effectiveness of the proposed RAKE reception.
{"title":"Iterative RAKE reception scheme using multi-carrier pulse for pulse based UWB system","authors":"K. Ohno, M. Itami, T. Ikegami","doi":"10.1109/ICUWB.2013.6663857","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663857","url":null,"abstract":"This paper discusses the multipath compensation technique for pulse based UWB systems. The RAKE reception is common technique as the multipath compensation technique. The multi-carrier pulse is possible to control the power spectrum density in the frequency domain. In this paper, the iterative RAKE reception by using the multi-carrier pulse is proposed to obtain better reception performance. The root mean square error (MSE) between the ideal received signal and approximated multi-carrier pulse is evaluated. The error becomes smaller by using proposed RAKE reception technique, because the correlation of the template pulse in each RAKE finger can be reduced by the iterative RAKE and the frequency selective fading can be compensated by using the multi-carrier pulse. The bit error rate (BER) performances are also evaluated to show the effectiveness of the proposed RAKE reception.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125316719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663847
T. Sakamoto, Toru Sato, R. Salman, I. Willms, A. Yarovoy
Ultra-wide-band sensing is an important technology for imaging in situations where conventional camera-based systems are difficult to use because of dense smoke or steam. Although many applications of such systems require real-time operation, conventional imaging algorithms cannot satisfy this demand, because most methods have focused on the imaging quality alone. Recently, a fast imaging algorithm, called polar revised range point migration (PRRPM), was developed that enabled the target images to be obtained within a short time. The PRRPM uses a closed-form transform called the polar inverse boundary scattering transform (PIBST), which expresses the relationship between the signal delay time and the target images. Although the PIBST was shown to be capable of producing images quickly, the images were degenerated because of wrongly estimated delay times, especially if the fractional bandwidth was narrow, and generated ringing waveforms with multiple false peaks. In this paper, we propose a method to select the correct delay times among multiple peaks that were estimated using the conventional method, which suppresses the false images caused by the ringing components. The proposed method is applied to measurements with m-sequence radar to establish the performance of the method.
{"title":"Quasi-wavefront selection algorithm for fast and accurate ultra-wideband imaging with polar revised range point migration","authors":"T. Sakamoto, Toru Sato, R. Salman, I. Willms, A. Yarovoy","doi":"10.1109/ICUWB.2013.6663847","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663847","url":null,"abstract":"Ultra-wide-band sensing is an important technology for imaging in situations where conventional camera-based systems are difficult to use because of dense smoke or steam. Although many applications of such systems require real-time operation, conventional imaging algorithms cannot satisfy this demand, because most methods have focused on the imaging quality alone. Recently, a fast imaging algorithm, called polar revised range point migration (PRRPM), was developed that enabled the target images to be obtained within a short time. The PRRPM uses a closed-form transform called the polar inverse boundary scattering transform (PIBST), which expresses the relationship between the signal delay time and the target images. Although the PIBST was shown to be capable of producing images quickly, the images were degenerated because of wrongly estimated delay times, especially if the fractional bandwidth was narrow, and generated ringing waveforms with multiple false peaks. In this paper, we propose a method to select the correct delay times among multiple peaks that were estimated using the conventional method, which suppresses the false images caused by the ringing components. The proposed method is applied to measurements with m-sequence radar to establish the performance of the method.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121898600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663827
Xiaoan Huang, R. Kohno
We firstly propose a 60-GHz Ultra-WideBand (UWB) Radio-Over-Fiber (ROF) System employing Subcarrier Multiplexing/Dense Wavelength Division Multiplexing (SCM/DWDM) to extend the coverage and improve high channel efficiency for UWB communication systems. SCM/DWDM is first utilized to the UWB-ROF system, due to the better channel efficiency with narrower channel spacing of the DWDM and the unique commonality of the simple SCM, achieving the large bit rate and high-mobility requirements for the 60 GHz. The novel Optical Frequency Multiplication (OFM) Modulation (Frequency Quadrupler) of 15 GHz lower RF is more cost-effective with much lower RF requirement and dispersion-tolerant even up to a 50 km optical transmission distance in the standard SingleMode Fiber (SMF), compared with Optical Double-Sideband (DSB) Modulation of 30 GHz higher RF. Moreover, we also investigate the novel Punctured Convolutional coding for the system, indicating a trade-off between throughput and Bit Error Ratio (BER). The maximum 1120 Mbits/s throughput per band can be achieved at the expense of 6 dB Eb/No penalty, in contrast to the maximum 480 Mbits/s per band of the current standard Orthogonal-Frequency-Division Multiplexing (OFDM)-UWB (WiMedia specification v1.2). This study provides a potential solution for the modulation and coding designs of a practical UWB-ROF system.
我们首先提出了一种采用子载波复用/密集波分复用(SCM/DWDM)的60 ghz超宽带(UWB)光纤无线电(ROF)系统，以扩大UWB通信系统的覆盖范围并提高信道效率。单片机/DWDM首先应用于UWB-ROF系统，由于DWDM具有更好的信道效率和更窄的信道间距以及简单单片机的独特通用性，实现了60 GHz的大比特率和高移动性要求。与30 GHz高RF的光双边带(DSB)调制相比，新型的15 GHz低RF的光倍频(OFM)调制(频率四倍器)具有更低的RF要求和更低的色散容忍，甚至在标准单模光纤(SMF)中高达50公里的光传输距离更具成本效益。此外，我们还研究了系统的新型穿刺卷积编码，表明吞吐量和误码率(BER)之间的权衡。与当前标准正交频分复用(OFDM)-UWB (WiMedia规范v1.2)的最大480 Mbits/s带宽相比，每个频段的最大吞吐量可以以6 dB / Eb/No代价实现。该研究为实际UWB-ROF系统的调制和编码设计提供了一种潜在的解决方案。
{"title":"60-GHz Ultra-WideBand Radio-Over-Fiber System employing SCM/WDM","authors":"Xiaoan Huang, R. Kohno","doi":"10.1109/ICUWB.2013.6663827","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663827","url":null,"abstract":"We firstly propose a 60-GHz Ultra-WideBand (UWB) Radio-Over-Fiber (ROF) System employing Subcarrier Multiplexing/Dense Wavelength Division Multiplexing (SCM/DWDM) to extend the coverage and improve high channel efficiency for UWB communication systems. SCM/DWDM is first utilized to the UWB-ROF system, due to the better channel efficiency with narrower channel spacing of the DWDM and the unique commonality of the simple SCM, achieving the large bit rate and high-mobility requirements for the 60 GHz. The novel Optical Frequency Multiplication (OFM) Modulation (Frequency Quadrupler) of 15 GHz lower RF is more cost-effective with much lower RF requirement and dispersion-tolerant even up to a 50 km optical transmission distance in the standard SingleMode Fiber (SMF), compared with Optical Double-Sideband (DSB) Modulation of 30 GHz higher RF. Moreover, we also investigate the novel Punctured Convolutional coding for the system, indicating a trade-off between throughput and Bit Error Ratio (BER). The maximum 1120 Mbits/s throughput per band can be achieved at the expense of 6 dB Eb/No penalty, in contrast to the maximum 480 Mbits/s per band of the current standard Orthogonal-Frequency-Division Multiplexing (OFDM)-UWB (WiMedia specification v1.2). This study provides a potential solution for the modulation and coding designs of a practical UWB-ROF system.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"48 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130382990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663821
ChangKyeong Kim, Joon-Yong Lee, Taechong Cho, Dongbok Ki, Bong Ho Cho, Jihoon Yoon
In this paper, a technique for detecting the locations of one or more persons, as well as their breath patterns, using an ultra-wideband radar sensor network, is proposed. Technical problems that occur in the estimation process, such as false detection due to indirect reflection and ambiguity problem, are introduced. Maximum-likelihood estimation is suggested as the solution to these problems and tested on 10 sets of radar measurements.
{"title":"Multi-target localization of breathing humans","authors":"ChangKyeong Kim, Joon-Yong Lee, Taechong Cho, Dongbok Ki, Bong Ho Cho, Jihoon Yoon","doi":"10.1109/ICUWB.2013.6663821","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663821","url":null,"abstract":"In this paper, a technique for detecting the locations of one or more persons, as well as their breath patterns, using an ultra-wideband radar sensor network, is proposed. Technical problems that occur in the estimation process, such as false detection due to indirect reflection and ambiguity problem, are introduced. Maximum-likelihood estimation is suggested as the solution to these problems and tested on 10 sets of radar measurements.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124360506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663830
Sun Xin, Zhang Lanzi, Lu Bi-ying, Jin Tian, Zhou Zhimin
Aimed at wall clutter mitigation problem in UWB through-wall-imaging application, a modified wall clutter mitigation method is proposed and algorithm steps are given in this paper. The method adopts the PCA to decompose the dimensionality of the echo matrix, and construct a cost-function for optimizing the iteration processing. The theory foundation of the proposed method and its performance is discussed using the theory of image signal to clutter ratio. This method can mitigate the wall clutter efficiently in Synthetic Aperture Radar (SAR) and Multi-input-Multi-output (MIMO) through-wall-imaging application. Besides, the obtained imaging result not only has the minimum disorder degree, but the optimal signal to clutter ratio (SCR) performance. The processing results of the synthetic and experimental data validate the efficiency of the method.
{"title":"Modified wall clutter mitigation by PCA and varimax norm in UWB through-wall-imaging","authors":"Sun Xin, Zhang Lanzi, Lu Bi-ying, Jin Tian, Zhou Zhimin","doi":"10.1109/ICUWB.2013.6663830","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663830","url":null,"abstract":"Aimed at wall clutter mitigation problem in UWB through-wall-imaging application, a modified wall clutter mitigation method is proposed and algorithm steps are given in this paper. The method adopts the PCA to decompose the dimensionality of the echo matrix, and construct a cost-function for optimizing the iteration processing. The theory foundation of the proposed method and its performance is discussed using the theory of image signal to clutter ratio. This method can mitigate the wall clutter efficiently in Synthetic Aperture Radar (SAR) and Multi-input-Multi-output (MIMO) through-wall-imaging application. Besides, the obtained imaging result not only has the minimum disorder degree, but the optimal signal to clutter ratio (SCR) performance. The processing results of the synthetic and experimental data validate the efficiency of the method.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133901226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663843
S. Bourdel, R. Vauché, O. Ramos, E. Muhr, J. Gaubert, N. Dehaese, H. Barthélemy
The design of an UWB pulse generator is presented. The pulse generator is based on an elementary pulse combination technique which enables the emitted pulse to be precisely shaped. This technique is implemented with no inductor or passive network and can be used to ensure regulation compliance. This generator has been fully integrated in a 0.13 μm CMOS standard technology. Its area is 0.06mm2 only and it can be programmed to synthesize different pulse shapes. For FCC compliant pulse shapes, the maximum measured 10dB bandwidth is 3.5GHz, and the maximum peak to peak magnitude is 220mV. The measured maximal power consumption is 87.6mW at 800MHz Pulse Repetition Frequency (PRF).
{"title":"An inductorless CMOS UWB pulse generator with active pulse shaping circuit","authors":"S. Bourdel, R. Vauché, O. Ramos, E. Muhr, J. Gaubert, N. Dehaese, H. Barthélemy","doi":"10.1109/ICUWB.2013.6663843","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663843","url":null,"abstract":"The design of an UWB pulse generator is presented. The pulse generator is based on an elementary pulse combination technique which enables the emitted pulse to be precisely shaped. This technique is implemented with no inductor or passive network and can be used to ensure regulation compliance. This generator has been fully integrated in a 0.13 μm CMOS standard technology. Its area is 0.06mm2 only and it can be programmed to synthesize different pulse shapes. For FCC compliant pulse shapes, the maximum measured 10dB bandwidth is 3.5GHz, and the maximum peak to peak magnitude is 220mV. The measured maximal power consumption is 87.6mW at 800MHz Pulse Repetition Frequency (PRF).","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125658129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663850
Jun Hu, G. Zhu, T. Jin, Liang Wang, Zhimin Zhou
Ultra-wide band (UWB) through wall radar (TWR) is considered as one of the preferred techniques for through-wall human indication due to its good penetration and high range resolution. UWB TWR benefits from its large bandwidth, but the large bandwidth inadvertently results in an issue not substantial in narrowband radars - high timing jitter effect. In typical impulse TWR, timing jitter is mainly caused by the non-ideal sampling clock at the receiver. The fact that impulse TWR employs pulses with very narrow width makes little jitter inaccuracy large enough to degrade the system performance. However, very few studies about the timing jitter in the UWB TWR applications can be found. In this paper, we focus on the impact of timing jitter on the clutter suppression in through-wall human indication. We first model and analyze the timing jitter in impulse TWR. Then, we introduce a simple jitter compensation method based on interpolation and cross correlation with a specified pulse to align the sampled pulses and combat the timing jitter. Finally, we adopt the exponential average background subtraction (EABS) method to suppress clutters. The proposed method is effective to remove the jitter distortion in clutter mitigation, and applicable for real-time applications. Through-wall experiments are presented to verify the proposed method.
{"title":"Study on timing jitter in clutter mitigation of through-wall human indication","authors":"Jun Hu, G. Zhu, T. Jin, Liang Wang, Zhimin Zhou","doi":"10.1109/ICUWB.2013.6663850","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663850","url":null,"abstract":"Ultra-wide band (UWB) through wall radar (TWR) is considered as one of the preferred techniques for through-wall human indication due to its good penetration and high range resolution. UWB TWR benefits from its large bandwidth, but the large bandwidth inadvertently results in an issue not substantial in narrowband radars - high timing jitter effect. In typical impulse TWR, timing jitter is mainly caused by the non-ideal sampling clock at the receiver. The fact that impulse TWR employs pulses with very narrow width makes little jitter inaccuracy large enough to degrade the system performance. However, very few studies about the timing jitter in the UWB TWR applications can be found. In this paper, we focus on the impact of timing jitter on the clutter suppression in through-wall human indication. We first model and analyze the timing jitter in impulse TWR. Then, we introduce a simple jitter compensation method based on interpolation and cross correlation with a specified pulse to align the sampled pulses and combat the timing jitter. Finally, we adopt the exponential average background subtraction (EABS) method to suppress clutters. The proposed method is effective to remove the jitter distortion in clutter mitigation, and applicable for real-time applications. Through-wall experiments are presented to verify the proposed method.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127598938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663833
B. Sobhani, M. Mazzotti, E. Paolini, A. Giorgetti, M. Chiani
Multistatic radar systems based on ultrawide-band (UWB) technology, also known as UWB radar sensor networks (RSNs), have been shown to represent a very promising solution to localize an intruder moving within a small surveillance area. In this paper, a new algorithm based on particle filtering is proposed and compared with grid-based Bayesian approach for target tracking in UWB RSNs with one transmitter and multiple receivers. The grid-based Bayesian approach verifies the whole surveillance area in a discretized manner for the presence of target, whereas particle filtering only focuses on the predicted particle positions. Numerical results illustrate how consideration of only a subset of space in particle filtering and discretization of the space in grid-based Bayesian approach can affect the tracking performance. Finally, the two approaches are compared in terms of algorithm complexity.
{"title":"Effect of state space partitioning on Bayesian tracking for UWB radar sensor networks","authors":"B. Sobhani, M. Mazzotti, E. Paolini, A. Giorgetti, M. Chiani","doi":"10.1109/ICUWB.2013.6663833","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663833","url":null,"abstract":"Multistatic radar systems based on ultrawide-band (UWB) technology, also known as UWB radar sensor networks (RSNs), have been shown to represent a very promising solution to localize an intruder moving within a small surveillance area. In this paper, a new algorithm based on particle filtering is proposed and compared with grid-based Bayesian approach for target tracking in UWB RSNs with one transmitter and multiple receivers. The grid-based Bayesian approach verifies the whole surveillance area in a discretized manner for the presence of target, whereas particle filtering only focuses on the predicted particle positions. Numerical results illustrate how consideration of only a subset of space in particle filtering and discretization of the space in grid-based Bayesian approach can affect the tracking performance. Finally, the two approaches are compared in terms of algorithm complexity.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126924471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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