IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences最新文献

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Vision-aided inertial navigation 视觉辅助惯性导航
B. Roberts, L. Vallot
{"title":"Vision-aided inertial navigation","authors":"B. Roberts, L. Vallot","doi":"10.1109/PLANS.1990.66198","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66198","url":null,"abstract":"A technique of removing inertial-odometer drift errors by identifying landmarks along the vehicle's route is presented. Landmark identification is performed with the use of laser range data. The scenario being developed consists of a ground vehicle equipped for autonomous retrace of a path that was stored while the vehicle was being remotely piloted to its destination. On the outbound portion of the vehicle's journey, objects are detected with the laser range imagery, tracked from frame to frame, and recorded as landmarks if they meet the requirements of the landmark model. During the retrace phase, inertial-odometer data are used to guide the vehicle along the outbound path (in reverse). The landmarks recorded on the outbound path are again located during retrace, and their locations serve to remove any positional error that has occurred. This technique of vision-aided inertial navigation is presented along with processed laser range data.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114530367","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}
引用次数: 13
The design, simulation and implementation of an accurate positioning system for automatic flight inspection 设计、仿真并实现了一种用于飞行自动检测的精确定位系统
B. Scherzinger, C. Feit
{"title":"The design, simulation and implementation of an accurate positioning system for automatic flight inspection","authors":"B. Scherzinger, C. Feit","doi":"10.1109/PLANS.1990.66212","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66212","url":null,"abstract":"The design and simulation of the integrated navigation algorithms of the C-29A automatic flight inspection system (AFIS) are presented. The automatic flight inspection design problem is one of determining the inspecting aircraft's position with respect to the threshold of the runway independently of the ILS (instrument landing system) beam being inspected. The C-29A design is a unique application of the integrated navigation concept, in which the aircraft position is computed by an aided inertial navigation solution where the primary aiding measurements are the aircraft position at the runway threshold and end, each occurring once per inspection pass. A UD-factorized Kalman filter estimates the navigation errors, and a modified Bryson-Frazier smoother improves these estimates to provide the best estimate of aircraft position for calibration of the ILS beam. Results indicate that the errors occurring in the runway referenced position estimates can be controlled quite well. Moreover, the limited measurements available are sufficient to calibrate some sensor errors. The key component to achieving a specified Accuracy is the PPS (precision position subsystem).<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122583598","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}
引用次数: 8
The WM 102 P code channel beats a full house of squared channels wm102p码信道胜过满屋子的平方信道
T. Stansell
{"title":"The WM 102 P code channel beats a full house of squared channels","authors":"T. Stansell","doi":"10.1109/PLANS.1990.66228","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66228","url":null,"abstract":"It is shown that P code processing of the GPS (Global Positioning System) L2 signal is consistently superior to squaring techniques. The difference is so great that the WM 102 P code channel outperforms multichannel squaring receivers. Because the squaring bandwidth of the L2 signal is defined by the P code bandwidth of +or-10.23 MHz, the L2 squaring process suffers a massive penalty in signal-to-noise ratio. In order to compensate for the signal-to-noise ratio penalty, squaring receivers must use very long time constants when tracking the L2 signal. Therefore, such a channel is severely limited in its ability to follow signal dynamics. It is shown that, because of its superior signal-to-noise ratio, the WM 102 P code channel is more effective at sampling the ionospheric refraction dynamics than a multichannel squaring receiver.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128046136","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}
引用次数: 3
Enhancement of single pixel targets using two-dimensional digital filters 利用二维数字滤波器增强单像素目标
M. Shiva, D. DeYoung
{"title":"Enhancement of single pixel targets using two-dimensional digital filters","authors":"M. Shiva, D. DeYoung","doi":"10.1109/PLANS.1990.66182","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66182","url":null,"abstract":"It is pointed out that, in order to aid an image seeker's ability to acquire and track small objects that subtend one pixel or less, some method of image enhancement which will isolate single-pixel targets from the background by means of increasing the signal-to-noise ratio must be used. Using the two-dimensional discrete Fourier transform and windowing techniques, two-dimensional digital filters were designed and evaluated against sample scenes for their ability to enhance single-pixel targets. The performance was compared to the performance of other available techniques. The designed filter was found to achieve nearly the same degree of enhancement as the Laplacian filter with the major advantage of preserving the background structure.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"94 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127983632","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}
引用次数: 0
A vehicle location system (VLS) solution approach 一种车辆定位系统(VLS)的解决方法
J. B. Chadwick, J. L. Bricker
{"title":"A vehicle location system (VLS) solution approach","authors":"J. B. Chadwick, J. L. Bricker","doi":"10.1109/PLANS.1990.66166","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66166","url":null,"abstract":"The Hughes vehicle location system (VLS), which locates and tracks one or more asynchronous aperiodic transmitters in either two or three dimensions, is described. It uses a dynamic receiver time-of-arrival (TOA) source selection, a direct hyperbolic position location solution, and an observation noise filter. For tracking a transmitter in two dimensions in an overdetermined system, hyperbolic geometric-dilution-of-precision (GDOP) is used to select an optimum subset of TOA triplets and to form a weighted position estimate. Particular emphasis is placed on the 2-D direct solution approach. The effect of observation noise on position estimation error in 2-D for an overdetermined system is demonstrated, and the derivation of the 2-D direct solution approach is presented.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116255695","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}
引用次数: 3
Collins Next Generation Digital GPS Receiver 柯林斯新一代数字GPS接收机
G. B. Frank, M. D. Yakos
{"title":"Collins Next Generation Digital GPS Receiver","authors":"G. B. Frank, M. D. Yakos","doi":"10.1109/PLANS.1990.66190","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66190","url":null,"abstract":"The architecture and technology features of the Collins next generation (NGR) digital GPS (Global Positioning System) receiver are described. The objective of this project was to develop an advanced GPS receiver chipset with high antijam capabilities. This program, initiated in 1985, has provided the technology for miniature receiver products for both unmanned and manned vehicle applications. A two-channel version of the receiver is in full-scale development for tactile missile applications. A five-channel version is in test and evaluation as a drop-in replacement for RCVR-3A, the US Department of Defense standard high dynamic receiver. The NGR design started with the digital signal processing architecture developed for the Defense Advanced Research Project Agency (DARPA) handheld GPS receiver. Enhancements were made to improve the antijam and signal acquisition performance. Producible, qualifiable, and cost-effective silicon monolithic microwave integrated circuits (MMICs) and semicustom digital technologies were used to develop the core GPS chipset. A system design approach was established to permit reuse of mature and validated GPS software.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115817376","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}
引用次数: 4
Failure management in spatio-temporal redundant, integrated navigation and flight control reference-systems 时空冗余、综合导航和飞行控制参考系统的故障管理
U. Krogmann
{"title":"Failure management in spatio-temporal redundant, integrated navigation and flight control reference-systems","authors":"U. Krogmann","doi":"10.1109/PLANS.1990.66196","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66196","url":null,"abstract":"Failure management techniques for highly reliable, fault-tolerant inertial reference systems are described. Cost, weight, and power considerations imply the use of a minimum number of inertial sensors in a skewed geometry. Fault-tolerant hardware performance is obtained by spatially separated channels with a preceptron-type information flow. Data diversity in temporally separated software channels yields software fault tolerance. Advanced vector space procedures for fault detection, localization, masking, and dynamic system reconfiguration permit safe and quick response, yielding minimal data and recovery latency.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124195810","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}
引用次数: 10
Passive gravity gradiometer navigation system 无源重力梯度导航系统
C. Affleck, A. Jircitano
{"title":"Passive gravity gradiometer navigation system","authors":"C. Affleck, A. Jircitano","doi":"10.1109/PLANS.1990.66158","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66158","url":null,"abstract":"A totally passive navigation system using gravity gradient map matching techniques is described. The system requires no external information and is nonemanating and nonjammable. The system consists of an inertial system updated by position fixing from map matching to gravity gradiometer outputs. The advantages of the system over existing terrain map matching systems are covered. The difficult instrumentation problem is solved with proven hardware by the Bell rotating accelerometer gravity gradiometer system. The issue of the database necessary for gravity gradient map generation is addressed. The results of an accuracy analysis in the form of a parametric study for such variables as altitude, speed, number of gradiometers, quality of the gradiometers, and quality of the inertial components are presented.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126941552","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}
引用次数: 51
Phase modulation control for an interferometric fiber optic gyroscope 干涉式光纤陀螺仪的相位调制控制
K.D. LaViolette, F. Bossler
{"title":"Phase modulation control for an interferometric fiber optic gyroscope","authors":"K.D. LaViolette, F. Bossler","doi":"10.1109/PLANS.1990.66152","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66152","url":null,"abstract":"A FOG (fiber-optic gyroscope) scale factor control has been developed by implementing a second-phase modulation producing an error function. This error function is used to drive the first original modulation depth, forcing J/sub 0/(M) to zero. A reduction factor of 100 in scale factor error is accomplished with a 0.1% loss in the SNR (signal-to-noise ratio) of the rate signal. The implementation of this control loop can be applied in a straightforward manner to a phase-modulated FOG. Therefore, an open-loop FOG can be used for more stringent applications such as attitude and reference.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126829110","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}
引用次数: 2
A comparison of four filters that use angle data from a fixed target 使用固定目标角度数据的四种滤波器的比较
N.P. Nelson
{"title":"A comparison of four filters that use angle data from a fixed target","authors":"N.P. Nelson","doi":"10.1109/PLANS.1990.66171","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66171","url":null,"abstract":"Four filters used to smooth the angle-only data received by a sensor on a moving platform are compared. A least-squares filter and a Kalman filter in X-Y coordinates are compared. Two Kalman polar filters (a conventional one and a modified one) are included in the comparison. Comparative position errors are shown, and the shapes of the error curves as a function of measurement error and time are discussed. In general, the Kalman filters were easier to control and adapt to the environment and provided smaller position errors, particularly with larger measurement errors. The modified polar filter was better than the conventional polar filter because of a greater stability in the presence of large measurement errors. The modified polar filter was slightly better than the X-Y filter.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132850901","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}
引用次数: 1
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