Спутник навигационных систем. QZS 4. [Редактировать]

КА Michibiki-4 это четвертый космический аппарат, который будет функционировать в рамках японской региональной навигационной системы. Согласно первоначальным планам в состав данной орбитальной группировки должно будет входить четыре подобных аппарата (в дальнейшем правительство страны планирует рассмотреть вопрос об увеличении этого показателя до 7 КА). Отличительной особенностью японской системы является то, что она в своем первоначальном виде будет включать три аппарата на замкнутой геосинхронной орбите и один на геостационарной (Michibiki-3). Кроме этого, уже объявлено о том, что управлять космическими аппаратами будет частная компания Quasi-Zenith Satellite System Services Incorporated в партнерстве с Japan Aerospace Exploration Agency (JAXA). Новая система будет совместима с навигационной системой управляемой ВВС США (GPS) и дополнять ее, обеспечивая дополнительный уровень точности определения координат на территории Японии и близлежащих государств. QZSS будет передавать сигналы L1C/A, L1C, L2C и L5 для совместимости с GPS, а также дополнительные L1S, L5S и L6 сигналы. Система должна будет выйти в режим операционного использования в 2018 году, когда планируется запустить все четыре аппарата.

Дополнительная классификация

#Наименования
1Тип оператора(владельца) - государственно-частные
2Страна производитель - Япония
3Страна оператор(владелец) - Япония

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг4000
2Платформа 1xDS-2000
3Габариты (сложенное состояние), метра6.2 х 2.9 х 2.8
4Мощность (СЭП), Вт6300
5Размах (солнечных батарей), метра19

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Танегасима
2Дата пуска2017-10-10
3Полезная нагрузка 1xQZS 4
4Ракета-носитель 1xH2A202

Найдено 168 документов по запросу «QZS 4». [Перейти к поиску]


Дата загрузки: 2016-11-15
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0.2/5
... Missions (5 min each) - ICESAT-2 (Wetzel) - QZS (Ohshima) - BLITS-M (Sokolov) - Lomonosov (Sokolov... QZSS 2. On-Orbit Transfer of QZS-1 Control 3. Deployment Schedule 4. Planned Activities... Support Request Form 5. LRA for QZS-2, 3 and 4 Introduction to QZSS ▌Quasi... development for 4-satellite constellation • QZS-2 and QZS-4: Quasi-Zenith Orbit (inclined geo-synchronous orbit) • QZS-3: Geo-stationary orbit  7-satellite constellation..., 2016 On-Orbit Transfer of QZS-1 Control From: To: ▌After Jan... CB to update information on QZS-1 site. 14 © NEC Corporation 2016... 2018 2019 2020 1st Satellite QZS-1 In-Operation since Sept., 2010... and after Design Life of QZS-1 being 12 yrs. Change of... QZS-1 replacement in 2020. 4-Satellite Constellation QZS-2 2021 Anticipated Launch #2 May, 2017 QZS-3 Anticipated Launch #3 July, 2017 QZS-4 Anticipated Launch #4 Sept... re: Mission Support Request Form ▌QZS-1 transfer  CAO/QSS will contact... CB to update information on QZS-1 Website (Expected: December, 2016 to January, 2017 timeframe) ▌QZS-2 and 4  LRA: Identical to QZS-1 (56 CCR)  Orbit... Orbit (IGSO) similar to QZS-1 ▌QZS-3  LRA: Identical to QZS-1 (56 CCR)  Orbit... 4 ▌With successful tracking record with QZS-1, QZS-2, 3 and 4 will be equipped with the same LRA as QZS-1. Specification LRA manufacturer Honeywell Technology... © NEC Corporation 2016 LRA for QZS-1 20th International Workshop on Laser...



Дата загрузки: 2016-11-04
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0.13/5
...: Asia and Pacific region Signals(QZS-1): L1C/A, L1C, L2C and L5... Policy, Cabinet Office Contract (PFI) QZS System Service Inc. (QSS) Contract... System Project under ministerial jurisdiction QZS System 3 satellites include MICHIBIKI Geostationary... 20 degrees elevation More than 2-QZS are available ・Over 60 degrees elevation 1 QZS is available Functional Capability: GPS... 2023(around)JFY. •Verification of QZS-1 MICHIBIKI – Technical Verification by JAXA... transmit safety confirmation information via QZS. ②, ③, ⑤ :These services are under investigation... transmit safety confirmation information via QZS. ②, ③, ⑤ :These services are under investigation... than 10 degrees elevation to QZS constellation High compatibility with the... 21 QZSS Technical Verification of QZS-1 MICHIBIKI Since June, 2011, QZSS...



Дата загрузки: 2017-06-15
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0.11/5
... satellites GPS Block-IIRM GLONASS-M QZS-1 For many years the Empirical... of GNSS orbits using SLR QZS-1 Galileo BeiDou Center for Orbit... orbits using SLR Galileo BeiDou QZS-1 Center for Orbit Determination in... reason for a large offset of QZS-1 (more than -110 mm) is... ECOM. QZSS/QZS-1 (J01) Old ECOM New ECOM For QZS-1 (elliptical geosynchronous... a large, unexplained SLR offset for QZS-1. SLR offsets for Galileo can...



Дата загрузки: 2017-01-10
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0.24/5
... .............................................................................................................. 5 3.1.2 Operation ........................................................................................................................ 12 3.1.3 Signals transmitted by QZS = QZS Signals .................................................................... 18 3.1.4 Time System and... 4.1 QZSS SERVICE AREA .............................................................................................................. 27 4.1.1 Single QZS Coverage Area .............................................................................................. 27 4.1.2 QZSS Coverage... for Ionospheric Parameters Transmitted by QZS .................................. 30 4.1.6 Availability Improvement when QZSS... .......................................................................................................................... 40 5 QZSS SIGNAL PROPERTIES .......................................................................................................... 42 5.1 QZS POWER LEVELS, BANDWIDTHS AND CENTER... Constellation ........................................................................................ 6 Figure 3.1.1-4 QZS Orbit Ground Tracks ............................................................................. 8 Figure 3.1.1-5 QZS ........................................................................................................... 9 Figure 3.1.1-6 QZS Block Diagram ...................................................................................... 9 Figure... Figure 3.1.3-1 Power Spectral Density of QZS Signals ...........................................................18 Figure 3.1.3-2 Relative velocity... Table 3.1.1-1 for calculation condition of QZS-1. For QZS-2 and 3, we assumed the... for Ionospheric Parameters Transmitted by QZS ........................30 Figure 4.1.6-1(1/2) Percentage of Time... Relations of LI Signal for QZS-1 and GPS ..............................................44 Figure 5.1.1-2 Phase Noise of all QZS signals.......................................................................45 Figure 5.1.1-3 Definition of... Tables Table 3.1.1-1 Calculation condition for QZS-1 nominal orbit ................................................... 8 Table 3.1.1-2 Location of... ............................................................................10 Table 3.1.3-1 General Specifications for QZS Signals.............................................................19 Table 3.1.3-2 Doppler coefficients... Performance Enhancement Signals ...................41 Table 5.1-1 QZS signal specifications ..................................................................................42 Table 5.1.1-1 Configuration of QZS signals ..........................................................................43 Table 5.1.1-2 Differences in... Correction Data ...................................... 105 Table 5.4.3-22 QZS Ephemeris Data ................................................................................. 106 Table 5.5.2-1 Definitions... Table 3.1.1-1 for calculation condition). Figure 3.1.1-4 QZS Orbit Ground Tracks Table 3.1.1-1 Calculation.... 8 IS-QZSS Ver. 1.4 Figure 3.1.1-5 QZS The QZS includes the equipment shown in... used to generate and transmit QZS signals. QZS signals comprise a carrier wave... LEX) QZSS monitors the QZS signals and QZS status and, once per... failure of that QZS is sent from another QZS by means of... 5.1.2.1.3). Transmission of the QZS signals from the failed QZS is halted or... transmitted by QZS = QZS Signals 3.1.3.1 Types of Signals Transmitted by QZS QZSS satellites...(GALILEO-TIME) S-TIM E) QZS satellites’ Clocks 0s QZS SV Clock relative to... Table 3.1.1-1 for calculation condition of QZS-1. For QZS-2 and 3, we assumed the... for Ionospheric Parameters Transmitted by QZS Each QZS transmits ionospheric parameters that... (mask angle 20°) QZS + GPS (mask angle 20°) QZS + GPS + Galileo (mask... (mask angle 40°) QZS + GPS (mask angle 40°) QZS + GPS + Galileo (mask... (mask angle 10°) QZS + GPS (mask angle 10°) QZS + GPS + Galileo (mask... by QZS satellites. 5.1 QZS Power Levels, Bandwidths and Center Frequencies All QZS signals... Ver. 1.4 5.1.1 Overview of signal properties 5.1.1.1 QZS Signal configuration Table 5.1.1-1 shows a summary... each of the QZS signals. Table 5.1.1-1 Configuration of QZS signals Signal name... L1-SAIF signal - (QZS-L1-SAIF) L2C signal (QZS-L2C) - One of... a time-multiplexed manner. 5.1.1.2 QZS Operational Frequency The operational QZS frequency, fs, is... navigation message). 5.1.1.6 Phase relationships among QZS signals 5.1.1.6.1 Phase orthogonal The two... SV ID=51 QZS PRN193 QZS PRN194 QZS PRN195 QZS PRN196 QZS PRN197 Spare Spare... SV ID=53 QZS PRN193 QZS PRN194 QZS PRN195 QZS PRN196 QZS PRN197 GPS PRN31... information) TBD 58 QZS ephemeris Provisional 59 QZS Almanac data TBD 60... 26 31 36 41 46 QZS 1 QZS 2 QZS 3 GPS 1 GPS 2 GPS 3 GPS 4 GPS...



Дата загрузки: 2017-01-10
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0.13/5
... .................................................................................................................... 5 3.1.2 Operation ...............................................................................................................................11 3.1.3 Signals transmitted by QZS = QZS Signals........................................................................ 17 3.1.4 Time System and... 4.1 QZSS SERVICE AREA ................................................................................................................... 27 4.1.1 Single QZS Coverage Area................................................................................................... 27 4.1.2 QZSS Coverage... for Ionospheric Parameters Transmitted by QZS .................................... 30 4.1.6 Availability Improvement when QZSS... ................................................................................................................................ 39 5 QZSS SIGNAL PROPERTIES............................................................................................................... 41 5.1 QZS POWER LEVELS, BANDWIDTHS AND CENTER... Constellation ...................................................................................... 6 Figure 3.1.1-4 QZS Orbit Ground Tracks............................................................................ 8 Figure 3.1.1-5 QZS.......................................................................................................... 8 Figure 3.1.1-6 QZS Block Diagram..................................................................................... 9 Figure... Figure 3.1.3-1 Power Spectral Density of QZS Signals ......................................................... 17 Figure 3.1.3-2 Relative velocity... more..................................... 28 Figure 4.1.3-1 Variation of QZS Elevation Angles for eight cities...)......................................................................................... 29 Figure 4.1.4-1 Average Number of QZS Satellites that can be seen... for Ionospheric Parameters Transmitted by QZS....................... 30 Figure 4.1.6-1(1/2) Percentage of Time... Figure 5.1.1-1 Phase Noise of all QZS signals .................................................................... 45 Figure 5.1.1-2 Definition of... Tables Table 3.1.3-1 General Specifications for QZS Signals........................................................... 18 Table 3.1.3-2 Doppler coefficients... Performance Enhancement Signals.................. 40 Table 5.1-1 QZS signal specifications................................................................................ 41 Table 5.1.1-1 Configuration of QZS signals........................................................................ 42 Table 5.1.1-2 Differences in... Correction Data ................................... 107 Table 5.4.3-22 QZS Ephemeris Data.............................................................................. 107 Table 5.5.2-1 Definitions... 3.1.1-4 shows the QZS orbit ground tracks. Figure 3.1.1-4 QZS Orbit Ground Tracks 3.1.1.1.4 QZS Figure 3.1.1-5 shows an illustration of a QZS. It...’s surface shape. Figure 3.1.1-5 QZS 8 IS-QZSS Ver. 1.1 The QZS includes the equipment... used to generate and transmit QZS signals. QZS signals comprise a carrier wave... LEX) QZSS monitors the QZS signals and QZS status and, once per... failure of that QZS is sent from another QZS by means of... 5.1.2.1.3). Transmission of the QZS signals from the failed QZS is halted or... transmitted by QZS = QZS Signals 3.1.3.1 Types of Signals Transmitted by QZS QZSS satellites...(GALILEO-TIME) S-TIM E) QZS satellites’ Clocks 0s QZS SV Clock relative to... for Ionospheric Parameters Transmitted by QZS Each QZS transmits ionospheric parameters that... (mask angle 20°) QZS + GPS (mask angle 20°) QZS + GPS + Galileo (mask... (mask angle 40°) QZS + GPS (mask angle 40°) QZS + GPS + Galileo (mask... (mask angle 10°) QZS + GPS (mask angle 10°) QZS + GPS + Galileo (mask... (mask angle 20°) QZS + GPS (mask angle 20°) QZS + GPS + Galileo (mask... (mask angle 40°) QZS + GPS (mask angle 40°) QZS + GPS + Galileo (mask... by QZS satellites. 5.1 QZS Power Levels, Bandwidths and Center Frequencies All QZS signals... Ver. 1.1 5.1.1 Overview of signal properties 5.1.1.1 QZS Signal configuration Table 5.1.1-1 shows a summary... each of the QZS signals. Table 5.1.1-1 Configuration of QZS signals Signal name... a time-multiplexed manner. 5.1.1.2 QZS Operational Frequency The operational QZS frequency, fs, is... navigation message). 5.1.1.6 Phase relationships among QZS signals 5.1.1.6.1 Phase orthogonal The two... SV ID=51 QZS PRN193 QZS PRN194 QZS PRN195 QZS PRN196 QZS PRN197 Spare Spare... SV ID=53 QZS PRN193 QZS PRN194 QZS PRN195 QZS PRN196 QZS PRN197 GPS PRN31... information) TBD 58 QZS ephemeris Provisional 59 QZS Almanac data TBD 60... 26 31 36 41 46 QZS 1 QZS 2 QZS 3 GPS 1 GPS 2 GPS 3 GPS 4 GPS...



Дата загрузки: 2017-04-08
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0.1/5
... promoted a 2nd tracking campaign of QZS-1 and successfully gathered a lot of... well as on the 2nd QZS-1 tracking campaign. SLR Orbit Determination... for AWG analysis. ※2013/4/1~6/31 QZS-1 Tracking Campaign Results Quasi-Zenith... of the accuracy evaluation of QZS-1, which is the first satellite... SLR observations. JAXA conducted the QZS-1 tracking campaign from February 25... station conducted the ranging to QZS-1 in the period shown in... 5(7) 44(34) 42 4 3 2 20 215 1 5 1 5 QZS-1 orbital elements Semi-major Axis...° ± 4° 270° ± 2° 135°± 5° East Evaluation of QZS-1 ephemeris by SLR observations JAXA have published precise ephemeris of QZS-1 in QZSS project site (http... 2012. SLR observations acquired in QZS-1 Tracking Campaign are used to... residuals of precise ephemeris of QZS-1. The result of overlap comparison... indicates that the accuracy of QZS-1 precise ephemeris in radial is... about 10 to 20 cm. QZS-1 Tracking Campaign ended in success... the Campaign for improvement of QZS-1 ephemeris. SLR Residual SLR Residual... who generously cooperated for the QZS-1 campaign and allowed it to...



Дата загрузки: 2017-04-23
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0.09/5
...) • Phase 1: System Test – First satellite, QZS-1 (“Michibiki”) was launched on 11... University FIG Working Week 2015 QZS-1 satellite “Michibiki” © JAXA FIG 2015... MADOCA (GPS/QZS) GPS: 2 s QZS: 2 s GPS: 10 s GPS: 10 s QZS: 10 s QZS: 10 s Generated by JAXA MADOCA (GPS/GLO/QZS) GPS: 2 s GPS: 2 s QZS: 2 s GPS: 30 s GPS: 30 s GLO: 30 s GLO: 30 s QZS: 30 s QZS: 30 s Generated by JAXA Low...



Дата загрузки: 2016-12-29
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0.06/5
.... Figuree 2 shows thee traajectory of QZS projected onto the eaarth’s surface... position ning system us sing QZS Fig. 2 Trajectory of quasi-zenith..., the positioning signals transmitted by QZS, GPS satellite, and so on... master control station to the QZS satellite via the tracking control... Augmentation Data are broadcast from QZS to all over Japan using... enhancement signals and broadcast from QZS. A user terminal receives the augmentation data from QZS along with the positioning signals from the QZS, GPS satellite, and so on... is available, by utilizing the QZS in combination with the U.S. GPS..., the positioning signals broadcast from QZS to enhance the GPS availability.../performance enhancement signal specifications of QZS. 3.3 Performance enhancement function 3.3.1 Centimeter Level.../Performance enhancement signal specifications of QZS Carrier wave Signal name L1... Level Augmentation Data from the QZS satellite. The configuration of the... roof too receive signnals from QZS S and GPS sattellites, an Internal... mentation Datta received froom the QZS, GP PS satellite, annd so... GPS satellittes, (2) posittioning calculatioon using QZS + GPS satellites, and (3) hybrid calculatioon... INS annd the result of QZS + GPS positioninng calculation. To determine... hybridd poositioning with QZS + G caalculation of thhe INS and Q QZS + GPS reesult...).. Figure 7 showss the skyplots of QZS and GPS G satellitess att various... acccuracy of positioning withh o and QZS + GPS satellites. It is clearr... only that the additionn of QZS imprroves the possitioning accu-raacy... hybridd positioningg (with and without QZS S avvailability enhancement) in comparison with... (b) P Positioning with h QZS + GPS ssatellites (c) Hybbrid positioning with QZS + GPSS + INS FFig... ning results Taable 2 Effects of QZS Availability A No Processing ty ype... w GPS only 28.6% % – 2 P Positioning with w QZS + GP PS 47.3% % 1.7 times 3 H Hybrid... be reduced, and thus the QZS is expected to be effective... performance enhancement functions of the QZS. The availability is significantly improved by the combination of QZS and GPS satellites. We have... performance enhancement signals of the QZS satellite, the positioning accuracy is... enhancement by the QZS, that is, signals from QZS are less affected...



Дата загрузки: 2017-03-28
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0.13/5
... the first Quasi-Zenith Satellite (QZS) based on the Basic Policy... application by using the first QZS which was to be launched... be introduced to achieve a three QZS constellation to complete the QZSS... the possibility that eventually seven QZS may be put into orbit... highly ambiguous if the seven QZS constellation is to be truly... the possibility of eventually operating 7 QZS. See Strategic Headquarters, Basic Plan... planned three Quasi-Zenith Satellite (QZS) constellation will supplement the U.S.'s GPS..., technical and application experiments on a QZS will be conducted to put the first QZS into the operational phase. Close... Utilizing Geospatial Information” to implement QZS program. 35 422 JOURNAL OF... ministerial meeting is also held. QZS, shall be used taking special...



Дата загрузки: 2017-03-28
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0.08/5
... the first Quasi-Zenith Satellite (QZS) based on the Basic Policy... application by using the first QZS which was to be launched... be introduced to achieve a three QZS constellation to complete the QZSS... the possibility that eventually seven QZS may be put into orbit... highly ambiguous if the seven QZS constellation is to be truly... the possibility of eventually operating 7 QZS. See Strategic Headquarters, Basic Plan... planned three Quasi-Zenith Satellite (QZS) constellation will supplement the U.S.'s GPS..., technical and application experiments on a QZS will be conducted to put the first QZS into the operational phase. Close... Utilizing Geospatial Information” to implement QZS program. 35 422 JOURNAL OF... ministerial meeting is also held. QZS, shall be used taking special...