作者: paroxysm 時間: 2025-3-21 20:42 作者: Endearing 時間: 2025-3-22 02:54 作者: Crayon 時間: 2025-3-22 08:12 作者: Progesterone 時間: 2025-3-22 12:28
A Tightly Combined BDS and GPS Method for RTK Positioning with Triple-Frequency Widelane Combinations rather stable. Under the medium baseline, the fixed success rate of WL ambiguity floating point solution fraction within 0.2 cycles is 100%, and WL ambiguity can be fixed correctly in the first epoch. Compared with the classical differencing model, the inter-system differencing model can effective作者: licence 時間: 2025-3-22 16:06 作者: licence 時間: 2025-3-22 21:00
The Accuracy Evaluation of Galileo Broadcast Clockslileo satellites providing normal services is about 1?ns. The RMS of the broadcast clock offset is about 1?ns, except that of E24 which is 5.7?ns. (2) After the Galileo satellites provided service, the STD and the RMS of broadcast clock offset changes are within 1?ns and 1–1.4?ns, respectively, whic作者: 賄賂 時間: 2025-3-22 22:50 作者: acheon 時間: 2025-3-23 03:39 作者: neutrophils 時間: 2025-3-23 08:55
Ambiguity Single Epoch Fixing Method Based on Prior Coordinate Constraintst the proposed method can achieve single-epoch fixation of ambiguity when the error of each direction of the rover coordinates is centimeter, and for satellites with large observation noise can be eliminated by gross error detection, thus ensuring the reliability of the single epoch positioning solu作者: 切碎 時間: 2025-3-23 09:47 作者: 1分開 時間: 2025-3-23 17:21 作者: Indolent 時間: 2025-3-23 21:57 作者: hankering 時間: 2025-3-24 01:58 作者: 刺耳 時間: 2025-3-24 04:39
Imaging Anatomy of Thyroid Glands rather stable. Under the medium baseline, the fixed success rate of WL ambiguity floating point solution fraction within 0.2 cycles is 100%, and WL ambiguity can be fixed correctly in the first epoch. Compared with the classical differencing model, the inter-system differencing model can effective作者: harpsichord 時間: 2025-3-24 10:15 作者: FANG 時間: 2025-3-24 13:11
Bailu Liu,Tingting Fan,Shijie Lilileo satellites providing normal services is about 1?ns. The RMS of the broadcast clock offset is about 1?ns, except that of E24 which is 5.7?ns. (2) After the Galileo satellites provided service, the STD and the RMS of broadcast clock offset changes are within 1?ns and 1–1.4?ns, respectively, whic作者: hematuria 時間: 2025-3-24 18:22 作者: 人類的發(fā)源 時間: 2025-3-24 21:26 作者: Postulate 時間: 2025-3-25 00:23 作者: 連系 時間: 2025-3-25 07:01 作者: 向下 時間: 2025-3-25 11:09
Jiadong Sun,Changfeng Yang,Yuanxi YangCollects selected CSNC 2019 papers.Showcases achievements and progress of BDS.Presents the latest studies of Global Navigation Satellite System in China.Covers hot topics in Global Navigation Satellit作者: Salivary-Gland 時間: 2025-3-25 14:42 作者: 消息靈通 時間: 2025-3-25 17:20
China Satellite Navigation Conference (CSNC) 2019 Proceedings978-981-13-7759-4Series ISSN 1876-1100 Series E-ISSN 1876-1119 作者: 觀察 時間: 2025-3-25 21:16 作者: 否決 時間: 2025-3-26 00:55
Springer Nature Singapore Pte Ltd. 2019作者: 最小 時間: 2025-3-26 05:55
Introduction to Imaging Methodshigh-precision requirement while the spectrum analysis method based on Fourier analysis theory has limitations. The Hilbert-Huang transform theory decomposes the signal adaptively into a finite number of intrinsic modes and residual signals that characterize the trend of the signal through empirical作者: 繁榮地區(qū) 時間: 2025-3-26 09:15
Shuangyan Sun,Shuang Xia,Wen Chenrecise Solar Radiation Pressure (SRP) model and sufficient ground tracking stations in orbit determination, the IGS (International GNSS Service) states that the officially published GPS Ultra-rapid (IGU) orbit products are prepared with 1D mean RMS of 5?cm. However, for the new emerging satellites t作者: 外貌 時間: 2025-3-26 13:10 作者: 客觀 時間: 2025-3-26 19:28
Shaowei Zheng,Lijun Wang,Zuohua TangIFCB estimation is by averaging IFCB of all stations. However, this method doesn’t consider the variation of receiver IFCB, so the averaged receiver IFCB is lumped into satellite IFCB. If the receiver IFCB can’t eliminate by averaging when station number is limited, this method is not theoretical co作者: 是突襲 時間: 2025-3-26 22:25 作者: 用手捏 時間: 2025-3-27 03:47
Bailu Liu,Tingting Fan,Shijie Links network of navigation constellation. First, we hierarchized the satellite networks in accordance with their visible relationships, and interlinked them hierarchically on the basis of STDMA. Second, we comprehensively analyzed the costs of hop, time-delay and load on the stability of inter-satell作者: crease 時間: 2025-3-27 07:19
Bailu Liu,Tingting Fan,Shijie Livice and timely update. This paper discusses two approaches to build BeiDou Terrestrial Reference Frame (BTRF), one is precise point position (PPP) and the other is net-solution with MGEXs. We only relied on BDS observations to determine precise coordinates of each BDS monitoring station under ITRF 作者: 繼而發(fā)生 時間: 2025-3-27 09:39
Bailu Liu,Tingting Fan,Shijie Licy of predicted clock offset will directly affect the accuracy of navigation, positioning and timing. In order to access the accuracy of Galileo broadcast clocks, the content and characteristics of Galileo broadcast ephemeris are introduced in this paper first. Then, the principle and method of accu作者: Explosive 時間: 2025-3-27 16:51 作者: Criteria 時間: 2025-3-27 21:25
Infectious Lesions in Bones and Jointsorbit determination strategy of all constellations is studied. The distributed autonomous orbit determination algorithm under the constraints of long-term forecast ephemeris is deduced, and the relationship between anchorage station setting strategy and orbit determination accuracy is analyzed. The 作者: 口訣 時間: 2025-3-27 23:39
Puxuan Lu,Yanan Hu,Jian He,Xiang Gao Modified Hopfield model and the mapping function of VMF1/GMF/NMF, and combines two tropospheric combined numerical weather prediction models based on the pressure-level data of ECMWF. This paper focuses on the impact of different tropospheric models on the positioning and zenith tropospheric delay 作者: Lumbar-Stenosis 時間: 2025-3-28 05:49 作者: 提名 時間: 2025-3-28 07:21 作者: LVAD360 時間: 2025-3-28 10:52 作者: 借喻 時間: 2025-3-28 15:19 作者: macrophage 時間: 2025-3-28 21:04 作者: condescend 時間: 2025-3-29 02:17 作者: 愛了嗎 時間: 2025-3-29 04:33 作者: 合乎習(xí)俗 時間: 2025-3-29 09:01
A Method for Improving the Short-Term Prediction Model for ERP Based on Long-Term Observationsarth reference framework. However, due to the restriction of timeliness of data processing, the predicted ERPs are taken into the relevant applications to meet the requirements of real-time or near real-time users. Therefore, given the disadvantages of short-term prediction models for ERPs, such as 作者: OTHER 時間: 2025-3-29 14:03 作者: 拱形大橋 時間: 2025-3-29 19:31 作者: 行業(yè) 時間: 2025-3-29 23:13 作者: 真 時間: 2025-3-30 01:08 作者: 虛構(gòu)的東西 時間: 2025-3-30 06:58 作者: eulogize 時間: 2025-3-30 09:58
BDS Long-Term Almanac Fitting Arc Length Design for Autonomous Navigationmode, in this paper, without changing the almanac model, we propose the scheme of different fitting arc length for different types of satellites. Considering position fitting maximum error, fitting stability and satellite storage resources on-board, the optimal fitting arc length for long-term alman作者: 閑聊 時間: 2025-3-30 16:03
Strategy Analysis of Anchorage Station in Distributed Autonomous Orbit Determination for Beidou MEO orbit determination strategy of all constellations is studied. The distributed autonomous orbit determination algorithm under the constraints of long-term forecast ephemeris is deduced, and the relationship between anchorage station setting strategy and orbit determination accuracy is analyzed. The 作者: Inveterate 時間: 2025-3-30 19:51 作者: 有花 時間: 2025-3-30 22:49
Preliminary Evaluation on the Precision of the BDS-3 Global Ionospheric Modelbal ionospheric model, called BDGIM. Single-frequency users can use the BDGIM along with nine ionospheric parameters broadcasted in the navigation message to perform ionospheric correction. This paper analyzes the deficiency of the current BDS and GPS Klobuchar models, and then by using the high pre作者: deciduous 時間: 2025-3-31 02:30
Research on Multi-GNSS Wide-Lane FCB Estimation Method Based on MGEXfractional cycle biases products are urgently needed. In this contribution, the ambiguity resolution in Multi-GNSS is deduced in detail based on the observation and precise products provided by multi-GNSS Experiment (MGEX). Meanwhile, a Multi-GNSS wide-lane FCB product estimation method is proposed.作者: electrolyte 時間: 2025-3-31 08:20
