Preparation for Flight of Next Generation Space GNSS Receivers

Similar documents
ESA Study GNSS Reflectometry Instrument & Algorithms NCEO/CEOI Conference, 19 th Sept 2012

Developments in GNSS Reflectometry from the SGR-ReSI on TDS-1

Recent GNSS Reflectometry Results from the UK TDS-1 Satellite

Galileo signal reflections used for monitoring waves and weather at sea

Microsatellite Ionospheric Network in Orbit

Developments in GNSS-Reflectometry from the SGR-ReSI in orbit on TechDemoSat-1

CYGNSS Mission Update

GNSS-Reflectometry for Observation and Monitoring of Earth surface

A Global System for Detecting Dangerous Seas Using GNSS Bi-static Radar Technology

Earth Remote Sensing using Surface-Reflected GNSS Signals (Part II)

New Technologies for Future EO Instrumentation Mick Johnson

RAPID DEVELOPMENT OF NAVIGATION PAYLOADS FOR GALILEO FULL OPERATIONAL CAPABILITY

GNSS Reflections over Ocean Surfaces

GNSS Remo Sensing in ensin a 6U Cubesat

Changing the economics of space. STRaND-1 & TDS-1. How the UK does Low Cost TechDemo Missions. Shaun Kenyon Mission Concepts, SSTL

GNSS Reflectometry at GFZ

The Typhoon Investigation using GNSS-R Interferometric Signals (TIGRIS)

GEROS-ISS: GNSS REflectometry, Radio Occultation and Scatterometry onboard the International Space Station

Outline. GPS RO Overview. COSMIC Overview. COSMIC-2 Overview. Summary 9/29/16

TechDemoSat-1 & NovaSAR-S

NASA Earth Science Division Status and Decadal Survey Thoughts Michael H. Freilich

GNSS remote sensing (GNSS-RS)

A NANOSATELLITE TO DEMONSTRATE GPS OCEANOGRAPHY REFLECTOMETRY

CYGNSS Wind Retrieval Performance

Using COTs components to Reduce Space Mission Costs: Facts, Myths, Advantages & Pitfalls

GNSS Reflectometry and Passive Radar at DLR

Development in GNSS Space Receivers

Small Satellites: The Execution and Launch of a GPS Radio Occultation Instrument in a 6U Nanosatellite

Ocean Altimetry and Wind Applications of a GNSS Nanosatellite Constellation

Iridium NEXT SensorPODs: Global Access For Your Scientific Payloads

An overview of the COSMIC follow-on mission (COSMIC-II) and its potential for GNSS-R

MEMS in Space A New Technology Advancing from Flight Experiment to Proven COTS Product

Space Situational Awareness 2015: GPS Applications in Space

New Small Satellite Capabilities for Microwave Atmospheric Remote Sensing: The Earth Observing Nanosatellite- Microwave (EON-MW)

CYGNSS MISSION OVERVIEW AND PREFLIGHT UPDATE

SPACE APPLICATIONS OF GNSS

Airborne demonstrators: a small step from space?

Microwave Radiometers for Small Satellites

NanoRacks Customer Payloads on Orbital-ATK-9

OBSERVATION PERFORMANCE OF A PARIS ALTIMETER IN-ORBIT DEMONSTRATOR

Polar Communications & Weather (PCW) Mission. Guennadi Kroupnik, Canadian Space Agency

GNSS Remote Sensing: CubeSat case study

Foreword by Glen Gibbons About this book Acknowledgments List of abbreviations and acronyms List of definitions

Five Years Orbit Experience of a Small Satellite Hyperspectral Imaging Mission. Mike Cutter & Martin Sweeting. AIAA Utah, August 2007

SURREY GSA CATALOG. Surrey Satellite Technology US LLC 8310 South Valley Highway, 3rd Floor, Englewood, CO

Upstream UK Capabilities. Rob Scott

GomSpace Presentation to Hytek Workshop

Analysis of GNSS-R delay-doppler maps from the UK-DMC satellite over the ocean

NOAA Satellite and Information Service National Environmental Satellite, Data, and Information Service (NESDIS)

NovaSAR-S - Bringing Radar Capability to the Disaster Monitoring Constellation

Deriving meteorological observations from intercepted Mode-S EHS messages.

Sounding the Atmosphere Ground Support for GNSS Radio-Occultation Processing

Remote Sensing with Reflected Signals

Innovative Sea Surface Monitoring with GNSS-Reflectometry aboard ISS: Overview and Recent Results from GEROS-ISS

Disruptive technologies and future trends of small satellites

The signals from the GPS constellation

Integration and Test of the Microwave Radiometer Technology Acceleration (MiRaTA) CubeSat

Industry Day of the Copernicus Sentinel-5 and Jason-CS Projects

TN11 - Executive Summary for ESA Contract 21488/08/NL/HE. Prepared by... S Chalkley. Approved by... Technical Director, Aero-Space Division

Space Technology Mission Directorate. NASA's Role in Small Spacecraft Technologies: Today and in the Future

Relative Navigation, Timing & Data. Communications for CubeSat Clusters. Nestor Voronka, Tyrel Newton

First Results From the GPS Compact Total Electron Content Sensor (CTECS) on the PSSCT-2 Nanosat

Microwave Sensors Subgroup (MSSG) Report

THE GNSS OCCULTATION, REFLECTOMETRY, AND SCATTEROMETRY SPACE RECEIVER GORS: CURRENT STATUS AND FUTURE PLANS WITHIN GITEWS

FIRST SPACEBORNE OBSERVATION OF SEA SURFACE HEIGHT USING GPS-REFLECTOMETRY. University of Michigan, Ann Arbor USA

Ionospheric H-Atom Tomography: a Feasibility Study using GNSS Reflections. G. Ruffini, Josep Marco, L. Ruffini ESTEC, Dec 17th 2002

Microwave Sensors Subgroup (MSSG) Report

NOAA Satellite Observing System Architecture (NSOSA) Study Update

SATELLITE OCEANOGRAPHY

2 INTRODUCTION TO GNSS REFLECTOMERY

GNSS Reflectometry: Innovative Remote Sensing

Spaceborne Receiver Design for Scatterometric GNSS Reflectometry

Arctic Navigation Issues. e-nav conference Nordic Institute of Navigation Bergen, March 5 th 2009

Non-PNT Applications from GNSS. Dr. Yang Dongkai School of Electronics and Information BeiHang University

CubeSat Navigation System and Software Design. Submitted for CIS-4722 Senior Project II Vermont Technical College Al Corkery

CubeSat Integration into the Space Situational Awareness Architecture

GNSS-R for Ocean and Cryosphere Applications

BeiDou Space Service Volume Parameters and its Performance

The Global Imager (GLI)

Microwave Remote Sensing

Aeolus Campaign Planning

Active microwave systems (2) Satellite Altimetry * range data processing * applications

Remote Sensing using Bistatic GPS and a Digital Beam Steering Receiver

Precise Positioning with Smartphones running Android 7 or later

Worst-Case GPS Constellation for Testing Navigation at Geosynchronous Orbit for GOES-R

Integrity of Satellite Navigation in the Arctic

PicoSaTs. A. G r e g o r i o D e p a r t m e n t o f P h y s i c s. Spin-off University of Trieste - Incubation Area Science Park

RAX: Lessons Learned in Our Spaceflight Endeavor

Sysnova Weather Challenge Response: Executive Summary

SEA SURFACE TEMPERATURE RETRIEVAL USING TRMM MICROWAVE IMAGER DATA IN SOUTH CHINA SEA

RemoveDebris Mission: Briefing to UNCOPUOS

Copernicus Introduction Lisbon, Portugal 13 th & 14 th February 2014

Rapid Development and Test for UKube-1 using Software and Hardware-in-the-Loop Simulation. Peter Mendham and Mark McCrum

8th Int l Precip. Working Group & 5th Int l Workshop on Space-based Snow Measurement, Bologna, Italia

Soil Moisture Observation Utilizing Reflected GNSS Signals

Dimov Stojče Ilčev. CNS Systems

AIREON SPACE-BASED ADS-B

China. France Oceanography S A T. Overview of the near-real time wave products of the CFOSAT mission. e l l i t e

The Future of GNSS-RO for Global Weather Monitoring and Prediction A COSMIC-2 / FORMOSAT-7 Program Status Update

SSTL Contribution to NDU Spacepower Symposium. Dr. Stuart Eves 26 April 2007

Transcription:

Changing the economics of space Preparation for Flight of Next Generation Space GNSS Receivers ICGPSRO, 14-16 th May 2013 Taiwan #0205691 Commercial in Confidence 1

Overview SSTL and Spaceborne GNSS Small satellites for ocean sensing GNSS Reflectometry & UK-DMC WaveSentry project SGR-ReSI on TechDemoSat-1 NASA CYGNSS Mission Future of GNSS-Reflectometry 2

SSTL - the company UK-based satellite manufacturing company owned by EADS Astrium (99%) and the University of Surrey (1%) Formed in 1985, the Company now employs > 500 staff and occupies dedicated facilities in Surrey, Kent, Hampshire & Colorado Small Satellite manufacturer (approx 40 satellites built & launched) 3

Most Recent Mission: FS7/Cosmic-2 Taiwan/USA project Operational Meteorology GNSS Radio-Occultation SSTL provides satellite design 6+6 LEO platforms Launch planned 2016 and 2018 Contract Signature 2012 4

Spaceborne GPS Receiver Examples PROBA-1 ESA technology demonstrator SGR-20 quad antenna receiver Still operational after > 11 years Strand-1 4.5 kg Cubesat Carrying android mobile phone SGR-05U miniaturised receiver Launched February 2013 GIOVE-A ESA Galileo demonstrator SGR-GEO high altitude GPS receiver Positioning above GPS constellation November 2012 5

Satellite Constellations and Sea State Single high-spec satellites have limited coverage E.g. Topex/Poseidon has 10 day repeat ground track Large gaps: limited value for dynamics and fine scale Satellite constellations give new opportunities High temporal, high spatial coverage feasible Validation of near real-time wind and wave models Long term observations for climate models Ice edge and concentration monitoring Towards operational monitoring service sea state, cyclones, storm surge, tsunamis, etc. To be feasible, need low cost, low power instruments, with adequate accuracy Target is for constellation to cost same as high-spec satellite 6

GNSS Reflectometry GNSS Reflectometry Detecting GPS / GNSS signals reflected off the Earth s surfaces Signals should contain geophysical imprint Using Earth-reflected GPS signals for ocean sensing first proposed in 1988 1993 ESA proposed reflectometry for ocean altimetry PARIS ESA Oppscat study in late 90s 00s - scatterometry First reflected signal detected 1998 (JPL using SIR-C data) First dedicated in-orbit experiment: UK-DMC (2003) 7

UK-DMC-1 GPS Reflectometry Experiment Pioneering GPS Reflectometry experiment in orbit Carried on UK-DMC imaging satellite, launched Sept 2003 SSTL & BNSC Newton funding Hardware: GPS Receiver with IF output Data-recorder Medium gain 12 dbi LHCP nadir antenna Each collection 20 seconds of raw data To be processed on ground Imager Reflectometry Antenna First dedicated GNSS reflectometry experiment 8

Recovered Signals Processing sampled data reveals reflected signals Correlate data with GPS code & carrier Coherent 1 ms, then incoherent to 1 second Correlation shape related to ocean roughness (dmss) And dmss in turn related to wind speed ~60 collections gathered over sea, land and ice Signals collected from all surface types! 9

GNSS Reflectometry over ice January 2008

GNSS Land Reflections Nebraska, USA GPS PRN 18 11

WaveSentry Project 2012 Industry partnership to collate and exploit wave knowledge TSB (UK Govt) sponsored (50%) Led by HR Wallingford & MSE Data Suppliers: Buoys around UK Ferries / Ship wave instruments SSTL s GNSS-Reflectometry Other satellite wave data Potential Users: Off-shore wind and wave energy suppliers, Off-shore gas and oil, shipping management Scientists SSTL activities Reprocessing UK-DMC data using latest tools Found many more signals in data away from beam centre NOC converting data into dmss results and validating Preparing for launch of ReSI on TechDemoSat-1 12

Reprocessing UK-DMC Data Demonstration of open loop capability new signals available from old collections 42+ UK-DMC data acquisitions over ocean, with reflections from 114 PRNs (GPS satellite ID) However only some collocated with buoys, fewer with directional buoys. NOC working with retrieval algorithms Good convergence with mss Mixed results with direction determination Need for more data from future mission for validation! UK-DMC data R47 13

New Instrument Development CEOI Project: (UK Govt) 2009 / 2010 SSTL - Project lead, management, SGR-ReSI core development & test SSC - Antenna design and test National Oceanographic Centre (NOC) - Ocean Reflectometry applications & requirements, Inversion models & outreach Bath - Atmospheric applications & requirements Polar Imaging Ltd - Ice sensing Applications 14

SGR-ReSI Basic Block Diagram 4 x L1 antennas Dual Frequency antennas RF F/E L1 RF F/E L1 RF F/E L1/L2 RF F/E L1/L2 Program SRAM (1MB TMR) FLASH (16MB) GNSS Receiver Flash-based FPGA with LEON-3 Core interlink 16.367M Hz Co-processor SRAM-based FPGA (reprogrammable) Mass Data Storage DDR2 Interfaces: RS422 / LVDS / CAN / USB Power Supply LVDS (Hi rate Data) GNSS receiver core Enhanced GNSS instrument 16-40V 15

Delay Doppler Maps On-board Study supported by ESA Partnership with NOC, Southampton End-to-end instrument demonstration DDMs allow reduction of data rate 100-1000x onboard => Towards continuous data collection 16

SGR-ReSI on TechDemoSat-1 TechDemoSat-1 160 kg UK Satellite 8 UK Payloads Launch ~ Q3 2013 ReSI config: Six front-ends Two dual frequency (L1 & L2C) antennas 5-10 watts, 1 kg Primary goals for ReSI Replacement for SGR-10 Ocean roughness sensing through reflectometry Collection of data for models Real-time demonstration Additional strategic goals Nadir Antenna 17

18

CYGNSS Cyclones from GNSS CYGNSS for the Earth Venture-2 program CYGNSS measures ocean surface winds within tropical storms and hurricanes Aiming for better weather forecasting & assessment of hurricanes Partners include: University of Michigan - lead SWRI, NASA Ames, Surrey Satellite Technology-US LLC (SSTL subsidiary) Science team includes NOC presence Constellation of 8 microsatellites (18 kg) Payload is the SGR-ReSI Sensing GPS L1 signals reflected off seas under cyclones L-Band good choice penetrates clouds, rain in hurricanes Satellites to be operational in 2017 Prof Chris Ruf University of Michigan 19

Next Generation Receiver - SGR-Axio Derived from SGR-ReSI design (- minus Data recorder) Drop-in replacement for SGR-10 with extra capabilities Power ~ 4 watts, mass 1 kg Hardware support for: Dual frequency (L1 & L2C/L5) on up to 4 antennas Galileo, Glonass, Beidou (TBC) Precise Clock Module option (CSAC) testing planned First flight planned for 2015 Expect to use on all SSTL satellites and others Can support GNSS reflectometry if customer wants it Aiming to include GNSS Reflectometry on new DMC-class satellite mission kicking off in 2013 more satellites will follow 20

Conclusions GPS widely used on spacecraft for position & time LEO and beyond GNSS Reflectometry promising for ocean sensing UK-DMC experiment showed feasibility WaveSentry project has allowed reprocessing of data GNSS-R to be demonstrated on TechDemoSat-1 Launch planned Sept 2013 SGR-ReSI selected for NASA CYGNSS constellation 8 satellites for sensing hurricanes using GNSS-R SGR-ReSI / Axio as payload of opportunity Flying on SSTL s or other missions, low data rate streams Providing services for meteorology, marine users and scientists Broader applications for ice, snow, land sensing GNSS-Reflectometry on every satellite? 21

Changing the economics of space Thank You Presented by: James Nicholas Surrey Satellite Technology Ltd. Commercial in Confidence 22 Tycho House, 20 Stephenson Road, Surrey Research Park, Guildford, Surrey, GU27YE, United Kingdom Tel: +44(0)1483803803 Fax:+44(0)1483803804 Email: info@sstl.co.uk Web:www.sstl.co.uk