2019 DGON Inertial Sensors and Systems (ISS)最新文献

{"title":"HRG Crystal™ DUAL CORE: Rebooting the INS revolution","authors":"Y. Foloppe, Y. Lenoir","doi":"10.1109/iss46986.2019.8943660","DOIUrl":"https://doi.org/10.1109/iss46986.2019.8943660","url":null,"abstract":"Safran Electronics & Defense’s hemispherical resonator gyroscope, the HRG Crystal™, has widely proven its ability to fulfill performances requirements usually reached by optical technologies (RLG and FOG), with the best C-SWaP1 characteristics and much higher reliability (cf. DARPA latest study [5]).Based on HRG Crystal™ technology, Safran Electronics & Defense has developed a new type of inertial core called HRG Crystal™ DUAL CORE, able to reach higher performances similar to the ones achieved by ESG technology.Indeed, thanks to the unrivalled C-SWaP of HRG Crystal™ for navigation grade gyro, the integration of multi sensors cores in a single cluster-core, made of 6 HRG Crystal™ gyroscopes (instead of 3 for “standard” cores), and accelerometers, becomes possible.The DUAL CORE principle, patented by Safran Electronics & Defense, relies on resonator gyroscopes’ intrinsic characteristic: its self calibration capability. Thus, in a DUAL CORE, while 3 gyros are navigating, the 3 others are self calibrating, strongly increasing the inertial system’s accuracy.HRG Crystal™ DUAL CORE allows Safran Electronics & Defense to address the most demanding applications with breakthrough products. For instance, in the naval market, Safran has launched at Euronaval 2018 the Black-Onyx™ DUAL CORE, an INS for submarines that addresses the market with unreached performances: better than 0.5 NM/120h.There is no doubt that, in the near future, other defense sectors, like land and aeronautics, will be addressed with HRG Crystal™ DUAL CORE inertial systems, as the need of extended performances, with better C-SWaP, becomes more and more significant each day.","PeriodicalId":233184,"journal":{"name":"2019 DGON Inertial Sensors and Systems (ISS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128993744","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}

{"title":"Development of a Silicon Photonics-based Light Source for Compact Resonator Fiber Optic Gyroscopes","authors":"M. Smiciklas, G. Sanders, L. Strandjord, W. Williams, E. Benser, S. Ayotte, F. Costin","doi":"10.1109/iss46986.2019.8943703","DOIUrl":"https://doi.org/10.1109/iss46986.2019.8943703","url":null,"abstract":"This paper covers latest progress in the development and testing of a Silicon Photonics (SiP) based three-laser source for use in a next generation compact resonator fiber optic gyroscope (RFOG) targeted for commercial navigation applications.In recent years, significant progress has been made in the development of compact RFOGs using phase locked diode lasers and miniaturized optics on a silicon optical bench (SiOB) [1–3]. While we have been able to demonstrate near or at civil navigation grade performance with the technology, one of our biggest remaining hurdles is to do so using a miniaturized SiP-based multi-frequency laser source.Here we discuss the development of a compact SiP-based three-laser source based on a low-noise implementation of the Pound-Drever-Hall (PDH) method and comprising high-bandwidth optical phase-locked loops [4, 5]. These are highly coherent narrow linewidth lasers with very low differential frequency noise, which is essential to achieve the desired performance. For the first time ever, we demonstrate RFOG performance with a compact SiP-based multi-frequency laser source. Test results including angle random walk and bias results are presented and compared against past discrete laser and optic configurations.","PeriodicalId":233184,"journal":{"name":"2019 DGON Inertial Sensors and Systems (ISS)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128093291","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}

{"title":"The Generalized Foucault Pendulum is a 3D Integrating Gyroscopes Using the Three-Dimensional Precession of Standing Waves in a Rotating Spherically Symmetric Elastic Solid","authors":"V. Zhuravlev, S. Perelyaev, D. Borodulin","doi":"10.1109/iss46986.2019.8943687","DOIUrl":"https://doi.org/10.1109/iss46986.2019.8943687","url":null,"abstract":"Today orientation, stabilization, navigation and management systems designed for various industrial purposes and for special technologies are based on a wide variety of gyroscopes including classic mechanical gyroscopes (MG), dynamically tuned gyroscopes (DTG), different floating type gyroscopes (FTG), electrostatic gyroscopes (ESG), laser ring gyroscopes (LRG), fiber optic gyroscopes (FOG) and micro mechanical gyroscopes (MMG). Late last century (1982) a team of DELCO specialists (USA) working under the guidance of David Lynch developed and presented to the international community an industrial prototype of a brand new type of gyroscope - hemispherical resonator gyro (HRG). In contrast to all the above mentioned gyroscopes a HRG is based on a brand new physical phenomenon (Brayan effect) – preservation of inertial properties in standing waves generated at the edge of a hemispherical resonator. Depending on the method employed to control the standing wave the instrument may be operated in two modes: as an angle sensor (integrating gyro) or as an angular velocity sensor (AVS). A modern HRG consists of a vacuum enclosing which houses a sensor element and an electronic module. A sensor element is an integral hemispheric resonator manufactured from quartz glass rigidly fixed on a vacuum tight foundation. Analyzing oscillation of the hemispheric resonator allows determining angular position of the gyroscope body in relation to inertial space. Distinctive features of the new inertial sensor include high accuracy, wide operational temperature range, outstanding performance reliability (P=0.995 not less than 15 years) and smaller price resulting from less labor input during industrial production of the instrument.","PeriodicalId":233184,"journal":{"name":"2019 DGON Inertial Sensors and Systems (ISS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133431610","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}

{"title":"Towards a navigation grade Si-MEMS gyroscope","authors":"S. Koenig, S. Rombach, W. Gutmann, A. Jaeckle, C. Weber, M. Ruf, D. Grolle, J. Rende","doi":"10.1109/iss46986.2019.8943770","DOIUrl":"https://doi.org/10.1109/iss46986.2019.8943770","url":null,"abstract":"Northrop Grumman LITEF GmbH (NG LITEF) started the development of MEMS gyroscope chips with Deep Reactive Ion Etching (DRIE) in 2003. In parallel a 6 degree of freedom (DOF) micro electro mechanical system (MEMS) miniaturized inertial measurement unit (μIMU), based on these MEMS gyroscope chips and MEMS accelerometer chips also processed with DRIE, was designed. After successful transfer from early MEMS IMU prototypes to series production, NG LITEFs μIMU is available since many years with a specified 4°/h bias composite error at an angular random walk (ARW) of 0.15 °/√(h). Recently an European Technical Standard Order (ETSO) for the MEMS based Attitude Heading Reference System (AHRS) LCR-350B was received, so that NG LITEF is able to supply the first purely MEMS based AHRS worldwide to the avionic helicopter and fixed-wing market.The concept of NG LITEFs μIMU is based on three single gyroscope modules. In order to reduce the number of signal lines from the central signal processing board of the μIMU to the single modules, a MEMS gyro chip concept with only a few electrodes was selected. One of the major drawbacks of this approach is the high complexity of the electrical operation scheme, utilizing several auxiliary control loops multiplexed over the small number of electrodes.Due to the high complexity and the signal processing in the μIMU, a high level of computing power is required. In the last year NG LITEF has conducted research in order to improve the performance simply by optimizing the existing electrical operation scheme. As a result of these activities, ARW and bias error were reduced significantly without redesign of the MEMS gyroscope chips. Today, a single axis gyroscope performance of the order of 0.25 °/h bias model error over temperature, bias instability < 0.03 °/h and an ARW of below 0.025 °/√h can be presented.The paper covers the improvement in bias and ARW associated with the improved operation scheme as well as an outlook to the next MEMS gyro improvements and further MEMS gyro development activities planned at NG LITEF.","PeriodicalId":233184,"journal":{"name":"2019 DGON Inertial Sensors and Systems (ISS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130510631","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}