1 © Spectratime ® 1 Company & Product Capabilities Pascal Rochat Managing Director / Founder
2 © Spectratime ® 2 Four Product Lines iSource+ ® iSync+ ® iTest +® iReference +® OCXO Space Oscillators Rb Oscillators MIL & Avionics Rb Oscillator Rb HM COMPONENTS (> 4000 units / year) SYSTEMS ( few hundred / year) GPS Disciplined MIL & Avionics Rb Smart GPS Disciplined Clocks Low Noise Rb Clock OCXORb iSync+ ® New! Rb/OCXO Clock 1sec 1Hz Smart Active Maser Clock Low Noise GPS Rb Clock New! Portable Battlefield GPS Rb Pack 12hrs Battery Waterproof New! Clock Instruments 1ps Frequency Stability Comparator 100fs Frequency Synthesizer 1ps Frequency Stability Comparator with integrated GPS & Rb New!
3 © Spectratime ® 3 Introduction on Frequency and Time Standards: Atomic Energy Levels
4 © Spectratime ® 4 Ground State Physics Choose atom with two ground states State selection Resonant excitation Detection
5 © Spectratime ® 5 What is an Atomic clock ? Atomic resonance is intrinsically more stable than quartz local oscillator. “Natural” atomic microwave resonance frequency is synthesized from RF LO. Control Loop continuously steers LO frequency to atomic resonance. RF output (10 MHz) embodies stability of atomic resonance.
6 © Spectratime ® 6 Atomic resonance detection
7 © Spectratime ® 7 Markets & Applications
8 © Spectratime ® 8 Company Information (Website).COM
9 © Spectratime ® 9 Space Products Space Crystal Oscillator Space Atomic Rb Clock Crystal USO Passive Hydrogen Maser PP PHM Space Passive Maser Clock Rubidium RAFS 100 g or 210 g Stability 1x10 10s 3.3 kg Stability 5x10 10’000s 18 kg Stability <1x10 100’000s
10 © Spectratime ® 10 Crystal Ultra Stable Oscillator (OCXO) Experience GSAT-3 (India) 7 FM (Flight Model) INVAP (USA) 4 FM GSTB-V2 (ESA) 3 FM GIOVE-B (ESA) 1 FM GALILEO IOV (EU) 25 FM IRNSS (India) 18 FM GALILEO FOC (EU) 68 FM (under production) GSAT (India) 4 FM SIOM (China) 1 FM Total OCXO FM Delivered: 94 units (28 flying on 5 satellites)
11 © Spectratime ® 11 Rubidium Atomic Frequency Standard (RAFS) Experience GSTB-V2 (ESA) 2 FM GIOVE-A (ESA) 2 FM GIOVE-B (ESA) 2 FM COMPASS (China)21 FM GAIA (ESA) 2 FM GALILEO IOV (ESA) 8 FM DFH (China) 13 FM IRNSS (India) 27 FM GALILEO FOC (EU)44 FM (under production) Total RAFS FM Delivered: 93 units (41 flying on 23 satellites)
12 © Spectratime ® 12 Passive Hydrogen Maser (PHM) Experience (sub-contractor of Selex Galileo) GSTB-V2 (ESA) 1 FM GIOVE-B (ESA) 1 FM GALILEO IOV (ESA) 8 FM GALILEO FOC (EU)44 FM (under production) Total PHM FM Delivered: 30 units (9 units flying on 5 satellites)
13 © Spectratime ® 13 SpT Clocks and GNSS Programs IRNSS Rubidium Cesium Rubidium Hydrogen Maser Rubidium Rubidium (1) Rubidium (2) Rubidium
14 © Spectratime ® 14 Galileo IOV Satellites Launched in 2011 and PHM, 8 RAFS, 24 USO Galileo GIOVE-A & B Satellites Launched in 2005 and 2008 4 RAFS, 1 PHM, 1 USO Spectratime Success Stories 17 Compass + DFH satellites from 2009 to 2012 29 RAFS Galileo FOC: IRNSS:
15 © Spectratime ® 15 Atomic Clock Ensemble in Space Mission on the International Space Station Mission primary objectives High performance of space clocks (H+Cs) and T&F link; Comparison of Ground Clocks via ACES Microwave Link; Fundamental physics experiments Secondary objectives + Scientific applications EM Phase closed; EQM testing; PFM manufacturing, delivery 2014, and launch 2016 Space Active Hydrogen Maser for ACES 40 kg Stability <1.5x10 1s