• JAXA | Quasi- Satellite-1 "MICHIBIKI"

     · MICHIBIKI: Current status of rubidium atomic clock 2. The First Quasi- Satellite "MICHIBIKI" is equipped with two rubidium atomic clocks, Clock 1 for the operation system and Clock 2 for the spare system, to construct the …

  • Better rubidium clocks increase BeiDou satnav accuracy ...

    2017-11-6 · The two satellites are equipped with more reliable rubidium atomic timekeepers than those in previous BeiDou satellites. According to Yang Changfeng, chief designer of …

  • GPS III Vespucci: Results of half a year in orbit ...

    2020-12-15 · The GPS III spacecraft are equipped with three Rubidium atomic frequency standard (RAFS) clocks based on the RAFSs already flown on GPS Block IIR and IIR-M (Wu and Feess, 2000). Following Cameron (2019), GPS III satellites provide

  • Coherent population dynamics in rubidium atoms excited …

    2009-8-28 · We investigate the time dynamics of a four-level rubidium atomic system excited by a train of $0ensuremath{pi}$ pulses. Resonant $0ensuremath{pi}$ pulse shaping is achieved by propagation of weak femtosecond pulses through rubidium vapor and characterized using frequency-resolved optical gating and within the linear dispersion theory. The excitation of the …

  • (PDF) Performance Overview of Space Rubidium Standards

    The Galileo IOV as well as FOC satellites are each equipped with two Rubidium atomic frequency standards (RAFSs; Droz et al. 2010) and two PHMs (Droz …

  • The Onboard Galileo Rubidium and Passive Maser, …

    2013-9-10 · Atomic clocks represent critical equipment for the satellite navigation system. The Rubidium Atomic Frequency Standard (RAFS) and Passive Hydrogen Maser (PHM) are at present the baseline clock technologies for the Galileo navigation payload. According to the present baseline, every satellite will embark two RAFSs and two PHMs.

  • QZSS

    • Dec. 2012: QZS-1 is equipped with two rubidium atomic clocks, Clock 1 for the operation system and Clock 2 for the spare system, to construct the redundant structure. The former is currently used for generating positioning signals. On …

  • China''s self-developed BDS officially opens for global ...

    2020-7-31 · The Xi''an branch developed the first rubidium atomic clock between 1996 and 2000, but there was still a long way to go before it could work in space since the clock had to stand the test of the vacuum environment, the impact of the launch, and long-term irradiation. ... The BDS-2 satellites have also been equipped with payloads of short message ...

  • QZSS (Quasi Satellite System)

    • Dec. 2012: QZS-1 is equipped with two rubidium atomic clocks, Clock 1 for the operation system and Clock 2 for the spare system, to construct the redundant structure. The former is currently used for generating positioning signals. On …

  • Phys. Rev. A 96, 052504 (2017)

    2017-11-14 · We use a magnetometer probe based on the Zeeman shift of the rubidium resonant optical transition to explore the atomic magnetic response for a wide range of field values. We record optical spectra for fields from a few tesla up to 60 T, the limit of the coil producing the magnetic field. The atomic absorption is detected by the fluorescence emissions from a very …

  • Performance of the BDS3 experimental satellite passive ...

    2018-2-14 · Various types of onboard atomic clocks such as rubidium, cesium and hydrogen have different frequency accuracies and frequency drift rate characteristics. A passive hydrogen maser (PHM) has the advantage of low-frequency drift over a long period, which is suitable for long-term autonomous satellite time keeping. The third generation of Beidou Satellite Navigation System …

  • China''s self-developed BDS officially opens for global ...

    2020-7-31 · In the past two decades, the Xi''an branch has delivered more than 100 rubidium atomic clocks, including 70 high-precision rubidium clocks, to the BDS program. China started to develop atomic clocks as early as the 1960s and 1970s. However, most of the research at that time was theoretical and ground-based.

  • Quantum control and pathway manipulation in rubidium

    2015-9-29 · There is an increasing interest in the extraction and control of the interfering quantum pathway amplitudes induced by control fields during laser-matter interactions. The Hamiltonian-encoding and observable-decoding (HE-OD) technique has been introduced for extracting the amplitudes of the pathways present in the dynamics and has recently been experimentally …

  • Network Time Server Guidance

    2020-8-24 · used in this application are always equipped with Rubidium atomic oscillators. During normal operations, the SyncServer is accurate to 15 nanoseconds, however, if GPS is lost, the SyncServer goes into holdover on the Rubidium oscillator. Rubidium''s are very stable oscillators and the SyncServer will

  • Full-ISL clock offset estimation and prediction algorithm ...

    2021-9-9 · We discuss the applications of this algorithm by assessing the clock performance of all BDS3 satellites equipped with a passive hydrogen maser (PHM) or rubidium atomic clock. After investigating the proper prediction model for each satellite, we use the full-ISL algorithm for 24-h clock predictions.

  • Evaluation of BDS-2 and BDS-3 Satellite Atomic Clock ...

     · MICHIBIKI: Current status of rubidium atomic clock 2. The First Quasi- Satellite "MICHIBIKI" is equipped with two rubidium atomic clocks, Clock 1 for the operation system and Clock 2 for the spare system, to construct the …

  • A Researcher''s Guide to

    2015-5-18 · Rubidium Atomic Clock Experiments (RACE) Concept Definition 12 Quantum Interferometer Test of Equivalence (QUITE) 13 ... The ISS provides a modern and well-equipped orbiting laboratory for long-term microgravity environment research. Routine and continued access to ... cooling and atomic physics; and relativistic and gravitational physics. This ...

  • Wuhan University

    2020-6-30 · Starting with the rubidium atomic clock, the "heart" of the whole navigation satellite, the domestic rubidium clock was developed from scratch. Under the efforts of experts from the Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, with Beidou II all navigation satellites were equipped w ith the domestically-made rubidium ...

  • ———— ...

    2021-5-11 · We have developed the first type of Rubidium atomic clock, popularized and produced several types of atomic clocks for applications, which satisfy the national strategic demands. From 1979, the lab has firstly started the theoretical and experimental research on laser cooling of gaseous atoms in China.

  • (PDF) Electromagnetically induced transparency in rubidium

    We investigate ladder-type electromagnetically induced transparency (EIT) in rubidium gas. The theoretical absorption profile of a weak probe laser beam at 780.2 nm (5S1/2-->5P3/2) is modeled in ...

  • SyncServer S650 SAASM Datasheet | Microsemi

    as a Rubidium atomic clock, keeps the S650 accurate for long periods in the event of a GPS service disruption. Secure Networking Security is an inherent part of the S650 SAASM. In addition to many security fea-tures and protocols, unused services can be disabled. The four standard GbE ports, and two optional 10 GbE ports, can accommo-

  • Optical and spin-coherence properties of rubidium atoms ...

    2021-9-21 · In this work, we measure the properties of ensembles of rubidium atoms trapped in solid neon that are relevant for use as quantum sensors of magnetic fields: the spin coherence of the trapped atoms and the ability to optically control and measure their spin state. We use the rubidium atoms as an AC magnetometer---by employing an appropriate dynamical decoupling …

  • BDS-3

    2018-10-21 · Abstract: BeiDou global navigation satellite system (BDS-3) satellites are equipped with high-precision domestic new rubidium clocks and passive hydrogen atomic clocks. Compared with the satellites of BeiDou-2 system (BDS-2), the performance of BDS-3 has great promotion.

  • CNSS (Compass/BeiDou Navigation Satellite System ...

    • November 7, 2017: New, ultra-accurate rubidium atomic clocks on board two BeiDou-3 satellites launched into space on Nov. 5, 2017, have greatly improved the accuracy of the system. - The two satellites are equipped with more reliable rubidium atomic timekeepers than those in previous BeiDou satellites.

  • Deals this week: Bombardier, KLX, Honeywell International

    2018-6-1 · The satellites will be equipped with two passive hydrogen masers and two Rubidium atomic clocks, as part of the €26m ($30.5m) contract. The scope of the contract further includes the supply of Spectratime Rubidium Atomic Frequency Standard and its Passive Hydrogen Masers physics package for 12 more Galileo satellites.

  • Zhao, Jianye-

    2021-9-7 · The practical chip-scale atomic clock has passed all kinds of space environment experiments, and it will be equipped on the satellite. 2) Frequency standard: Dr. Zhao proposes the idea of optical comb-atomic clock integration, and preliminarily demonstrates the CPT optical frequency comb and the rubidium two-photon frequency standard.

  • Rubidium Frequency Standard

    2021-12-9 · The PERF10 is built around Stanford Research Systems'' own PRS10 rubidium oscillator. By designing and building the oscillators ourselves, we''re able to craft an instrument perfectly matched to the demanding requirements of audio master clocks. Starting with an oven stabilized, 3rd overtone, varactor tuned, SC-cut crystal oscillator, the PERF10 ...

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