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—We will show that ocean-reflected signals from the global positioning system (GPS) navigation satellite constellation can be detected from a low-earth orbiting satellite and that these signals show rough correlation with independent measurements of the sea winds. We will present waveforms of ocean-reflected GPS signals that have been detected using the(More)
BIOGRAPHY Martin Unwin heads the GPS team at Surrey Satellite Technology, responsible for spaceborne GPS and GNSS receiver design and operation. He holds a BSc from Lancaster University and a PhD from the University of Surrey. Scott Gleason received his BS in Electrical Engineering from the State University of New York at Buffalo and an MS in Engineering(More)
As part of the EV-2 Cyclone Global Navigation Satellite System (CYGNSS) mission team, Surrey will be providing the Delay Doppler Mapping Instrument (DDMI) for eight Observatories designed and built by the University of Michigan and Southwest Research Institute (SwRI). Following the success of the GPS ReOectometry Experiment on the UK­ DMC 1 satellite(More)
In this paper we analyse the GPS signals reflected by the surface of the ocean to retrieve information about the sea surface roughness, expressed in statistical terms by means of the sea surface Mean Square Slopes (MSS). Particularly, we perform Delay-Doppler mapping of real scattered GPS signals from the Surrey Satellite Technolody Ltd UK-DMC mission , and(More)
Data on albacore tuna catches within the New Zealand EEZ from 1993 to 2004, derived from Tuna Longline Catch Effort Returns and Catch Effort landing Returns, were used to model catch per unit effort (CPUE) for the longline and troll fisheries, respectively, and hence to generate standardised CPUE indices by year and quarter. In addition to operational data(More)
This paper presents the latest development in SSTL's successful SGR range of Space GNSS Receivers. The SGR-ReSI (Remote Sensing Instrument) is a highly versatile and uniquely capable GNSS receiver that has been designed with the low-cost, microsatellite market in mind. Based on COTS parts, the SGR-ReSI builds on the expertise SSTL and SSC have developed in(More)
1. ABSTRACT Global Navigation Satellite Systems (GNSS) such as Global Positioning System (GPS) or Galileo provide ubiquitous signals, which can be exploited for Earth Observation. Successful use of reflected GPS signals to measure ocean wind and waves was demonstrated recently for the first time with data from a dedicated receiver on a Low Earth Orbiting(More)
This paper is a review on Surrey Satellite Technology Ltd's developments in Space GNSS receivers. Hardware implementations of the UK-DMC as well as the imminent flying SGR-ReSI are briefly summarised. Past sets of data obtained by the disaster monitoring satellite, UK-DMC, are re-processed in order to acquire for Satellite Based Augmentation System (SBAS)(More)