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

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Heli/SITAN: a terrain referenced navigation algorithm for helicopters Heli/SITAN:直升机地形参考导航算法
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66236
J. Hollowell
{"title":"Heli/SITAN: a terrain referenced navigation algorithm for helicopters","authors":"J. Hollowell","doi":"10.1109/PLANS.1990.66236","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66236","url":null,"abstract":"Heli/SITAN is a terrain referenced navigation algorithm that utilizes radar altimeter ground clearance measurements in combination with a conventional navigation system and a stored digital terrain elevation map to estimate a helicopter's position accurately. Multiple model adaptive estimation techniques are used, and a bank of single-state Kalman filters is used to ensure that reliable position estimates are obtained even in the face of large initial position errors. A real-time implementation of the algorithm was tested aboard a US Army UH-1 helicopter equipped with a Singer-Kearfott Doppler velocity sensor and a Litton LR-80 strapdown attitude and heading reference system (AHRS). The median radial error of the position fixes provided in real time by this implementation was less than 50 m for a variety of mission profiles. Although Heli/SITAN was demonstrated on a helicopter equipped with a Doppler aided AHRS, the extension to other types of aircraft and navigation systems is straightforward.<<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":"130600770","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: 95
A GPS receiver with built-in precision pointing capability 内置精确指向能力的GPS接收器
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66161
R. Brown, P. Ward
{"title":"A GPS receiver with built-in precision pointing capability","authors":"R. Brown, P. Ward","doi":"10.1109/PLANS.1990.66161","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66161","url":null,"abstract":"A Global Positioning System (GPS) pointing experiment using a single five-channel AN/PSN-9 GPS receiver developed for military manpack/vehicular applications is described. The AN/PSN-9 basically a dual-port per channel design, which results in minimum hardware and highest pointing accuracy by using common hardware to perform the GPS differential phase measurements from two GPS antennas. Procedures to solve for the phase double-difference ambiguities are described, and results are presented which demonstrate pointing solution convergence in less than 10 s with arbitrary movement of the antenna beam. Pointing estimates based on filtered, unambiguous phase double-difference observables from AN/PSN-9 GPS pointing unit indicate the potential of achieving 0.5-mr (0.3 degrees ) AZ pointing accuracy with only 1-m antenna baseline separation.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"22 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":"130253154","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: 26
Terrain aided navigation: current status, techniques for flat terrain and reference data requirements 地形辅助导航:平坦地形的现状、技术和参考数据要求
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66235
A. Henley
{"title":"Terrain aided navigation: current status, techniques for flat terrain and reference data requirements","authors":"A. Henley","doi":"10.1109/PLANS.1990.66235","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66235","url":null,"abstract":"It is pointed out that terrain referenced navigation (TRN) techniques are now well established as effective position-fixing systems suitable for use in manned and unmanned vehicles. The SPARTAN TRN technique, which has been selected for the UK Tornado GR4 update, provides accurate navigation with rapid initial capture without recourse to an initialization mode. An overview of the SPARTAN technique is provided, and techniques for improving navigation performance over very flat terrain are described. The benefits of the terrain characteristic matching techniques are outlined, and a summary of integrated navigation system performance is given. Terrain-aided systems require appropriate reference databases. The availability of the data and its suitability are discussed. The need for careful consideration of database quality and registration when terrain aided systems are being designed is indicated.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"15 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":"128005776","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: 37
The automated Loran-C coverage diagram generator 自动罗兰- c覆盖图生成器
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66222
J. Catlin, D. Foulis, G. Noseworthy, B. Cairns
{"title":"The automated Loran-C coverage diagram generator","authors":"J. Catlin, D. Foulis, G. Noseworthy, B. Cairns","doi":"10.1109/PLANS.1990.66222","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66222","url":null,"abstract":"The preliminary details of an automated system developed for generating and archiving Loran-C coverage diagrams are presented. A coverage diagram is a graphical representation of the geographical area inside of which a Loran-C receiver can function within specified limits. The automated Loran-C coverage diagram (ALCDG) generator is a PC-based software system that quickly computes and displays estimated service areas for existing and proposed Loran-C chains. This system can generate a coverage diagram for a proposed chain in under ten minutes, including the time needed to enter station parameters and draw the map. The system is based on existing methods for diagram generation but has been modified to improve the speed and accuracy of the process. The ALCDG has gone through several periods of design review and testing, including extensive testing of the man-machine interface and the technical model.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"89 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":"114205429","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
Multipath sensitivity and carrier slip tolerance of an integrated Doppler DGPS navigation algorithm 集成多普勒DGPS导航算法的多径灵敏度和载波容差
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66239
J. Sennott, J. Spalding
{"title":"Multipath sensitivity and carrier slip tolerance of an integrated Doppler DGPS navigation algorithm","authors":"J. Sennott, J. Spalding","doi":"10.1109/PLANS.1990.66239","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66239","url":null,"abstract":"Integrated Doppler techniques are potentially very useful for such critical real-time DGPS (differential Global Positioning System) applications as river and harbor ship steering, aircraft precision approach, and autonomous land vehicle guidance. Offering high measurement precision and reduced sensitivity to multipath, the integrated Doppler observable can be introduced into the user navigation algorithm in several ways. The approach proposed features: a state variable model for code multipath, code-carrier ambiguity, and code-carrier ionospheric delay offset rate; delta-range, integrated Doppler and code pseudorange combined in an optimal manner during new satellite reception; a state variable and covariance model implemented for DGPS reference station extrapolated corrections; and real-time correction of large cycle-slip events. The interaction of filter modules is discussed. A filter covariance model is utilized to assess the impact of multipath strength and correlation time.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"50 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":"128656732","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: 7
Prospects for reduction of separation standards in oceanic airspaces with satellite services 使用卫星服务降低海洋空域分离标准的前景
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66185
D. Livingston
{"title":"Prospects for reduction of separation standards in oceanic airspaces with satellite services","authors":"D. Livingston","doi":"10.1109/PLANS.1990.66185","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66185","url":null,"abstract":"How satellites will influence the ATC (air traffic control) system of the future is examined from the control system perspective. It is maintained that, in a future environment, where significantly improved safety margins will be required, ADS (automatic dependent surveillance), by itself, will not permit substantial reductions in lateral separation. Likewise, satellite-based navigation systems will not, by themselves, lead to a greatly improved ATC system because if large errors persist at their current rate, improvements in nominal accuracy will not overcome their effect on the overall rate of collisions. It is concluded that only when satellites are integrated into a control system that uses their ability to furnish highly accurate positional data and frequent surveillance updates will they permit anticipated traffic increases while reducing the risk of collision enough to allow separation reductions.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"38 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":"129509673","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
A technique for specifying navigation system performance requirements in SAR motion compensation applications 一种在SAR运动补偿应用中指定导航系统性能要求的技术
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66165
T. A. Kennedy
{"title":"A technique for specifying navigation system performance requirements in SAR motion compensation applications","authors":"T. A. Kennedy","doi":"10.1109/PLANS.1990.66165","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66165","url":null,"abstract":"A technique for specifying SAR (synthetic aperture radar) motion compensation requirements at the INS (inertial navigation system) level has been developed and tested. The significance of this technique is that it provides a method of specifying SAR image quality imposed INS requirements at the INS level in terms of SAR image quality parameters. This technique allows the relaxation of requirements due to the use of autofocus to be directly implemented in the system requirements. The results of the testing have proven that this technique can be easily implemented as part of normal INS acceptance testing and that the requirements are not overly restrictive. Thus, the INS vendor retains the flexibility of choosing the inertial sensors and system configuration necessary to meet the SAR motion compensation system-level requirements. The techniques provides a direct comparison to SAR performance requirements imposed by the radar customer.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"16 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":"114881874","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
Uliss G, a fully integrated 'all-in-one' and 'all-in-view' inertia-GPS unit Uliss G是一种完全集成的“一体化”和“全视野”惯性gps装置
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66206
L. Camberlein, B. Capit
{"title":"Uliss G, a fully integrated 'all-in-one' and 'all-in-view' inertia-GPS unit","authors":"L. Camberlein, B. Capit","doi":"10.1109/PLANS.1990.66206","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66206","url":null,"abstract":"An eight-channel GPS (Global Positioning System) receiver (500 cm/sup 3/, 0.5 kg, 9 W) has been physically embedded into an existing Uliss inertial system, resulting in a small, light, all-in-one, all-in-view unit functionally optimized through tight coupling of GPS and INS (inertial navigation system) for performance and robustness. Flight tests have been conducted on a Mirage III at the French Official Flight Test Center of Bretigny, and excellent performance has been demonstrated.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"118 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":"116352500","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
Kinematic GPS: resolving integer ambiguities on the fly 动态GPS:动态解决整数歧义
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66231
P. Hwang
{"title":"Kinematic GPS: resolving integer ambiguities on the fly","authors":"P. Hwang","doi":"10.1109/PLANS.1990.66231","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66231","url":null,"abstract":"In the kinematics GPS (Global Positioning System), the initial integer ambiguity must be resolved either by a static survey over time or by instant calibration with a known baseline or an antenna exchange. It is pointed out that, while these standard methods require the maintenance of a baseline strategy to an Earth-fixed reference frame during the initialization, there are situations when at least one of the receivers may be constantly in motion. Two ideas are proposed for adapting standard kinematic techniques to situations that do not naturally allow for the constraint of a fixed baseline. The first calls for the extraction of the information needed to resolve the integer ambiguity from the data collected while the kinematic survey is in progress. The second addresses the use of the antenna exchange technique for mobile platforms where the original locations of the antennas are not likely to remain stationary during the physical exchange. Both ideas count on information from additional measurements to augment their respective measurement models.<<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":"131833787","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
Precision aided inertial navigation using SAR and digital map data 利用SAR和数字地图数据进行精确辅助惯性导航
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences Pub Date : 1990-03-20 DOI: 10.1109/PLANS.1990.66219
J. Bevington, C. Marttila
{"title":"Precision aided inertial navigation using SAR and digital map data","authors":"J. Bevington, C. Marttila","doi":"10.1109/PLANS.1990.66219","DOIUrl":"https://doi.org/10.1109/PLANS.1990.66219","url":null,"abstract":"The authors describe a novel scheme for obtaining position update information for an inertial navigation system through the use of imagery from a synthetic aperture radar (SAR) sensor and an onboard digital map database. Updated information is obtained through comparison of the locations of terrain features extracted from the SAR imagery with locations predicted using the digital map and current navigation estimates. The authors also discuss the overall system concept along with experimental and analytical results obtained to date. Analytical results include a preliminary error analysis which treats SAR image distortions introduced through navigation errors and the consequent effects on update accuracies. A description of the terrain feature extraction Algorithms is presented along with experimental results.<<ETX>>","PeriodicalId":156436,"journal":{"name":"IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences","volume":"41 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":"128735214","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: 7
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