An overview of GPS receivers for small satellites

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Headings…
An overview of GPS receivers for small satellites
Introduction
Key performance criteria
GPS receivers on the market

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There is growing demand for Global Positioning System (GPS) receivers that enable small satellites to achieve attitude and orbit control, orbital transfers, and end-of-life deorbiting.
In this article we provide a gentle primer to the topic of selecting a GPS receiver for a smallsat mission and give an overview of some of the navigation and positioning products making waves in the global marketplace for space.
In the next few chapters we take a brief look at how GPS receivers work and discuss what key performance characteristics need to be taken into account when selecting a product for your operation.
We also provide an overview of a number of GPS receivers on the market, all of which are listed on the satsearch platform to help you select the best option.
The difference between such uses and space-based GPS is not just in the components used but also in the software embedded, as GPS receivers made for terrestrial use typically are not tuned to accommodate the large variations in the received signal Doppler frequencies that are usually the case with satellites orbiting the Earth.
Now that you’re armed with the knowledge of what a GPS receiver needs to do you can make an informed decision from the available products, based on your required performance characteristics.
TThe GPS-601 Satellite GNSS Receiver is a 120 Channel GNSS Receiver that tracks GPS, GLONASS, Galileo, and BeiDou. The GPS-601 contains an improved core and an expanded interface card which improves the components’ available features, accuracy, and compatibility, while still relying on the foundation of a space-qualified and proven design.
The GPSRM 1 utilizes a NovAtel® OEM719-series high-performance 555-channel space-grade GNSS receiver to provide accurate position, navigation and timing (PNT) information.
The Phoenix GPS receiver is a 12-channel single-frequency receiver specifically designed for high-dynamics and space applications

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