Introduction; Overview - Simrad HS80 Manual

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Introduction

Overview

The HS80/HS80A GPS Compass and the MX575C/MX575D DGPS Compass are based upon a
new generation GPS engine technology.
¼ Note:
When referring to both the HS80/HS80A GPS Compass and the MX575C/MX575D
DGPS Compass this manual uses the term smart GPS Compass. When referring to either
product, this manual uses either HS80/HS80A or MX575C/MX575D, respectively.
The smart GPS compass is a complete GPS compass and positioning system in a single
enclosure that requires only one power/data cable connection. With its NMEA 2000/NMEA
0183 support and ease of installation, it is the perfect solution for marine applications.
The HS80/MX575C is an integrated system that houses the following:
-
New GPS engine technology
-
Two GPS antennas
-
Beacon receiver and H-Field beacon antenna (MX575C/D only)
The HS80A/MX575D is an integrated system that houses the following:
-
New GPS + GLONASS engine technology
-
Two Dual-Frequency GPS/GLONASS antennas
-
Beacon receiver and H-field beacon antenna (MX575D only)
Common items in all the GPS compass models are:
-
Power supply
-
Single axis gyro
-
Tilt sensor on each axis (X and Y axes)
The gyro and tilt sensors are present in all models to improve system performance and to
provide backup heading information in the event that GPS heading is not available due to
signal blockage.
¼ Note:
The HS80/HS80A GPS Compass is identical to the MX575C/MX575D DGPS Compass
with the exception that it does not contain a DGPS beacon receiver and H-field antenna. If
you purchased the HS80/HS80A GPS Compass, disregard the sections of this manual that
discuss the beacon signal, receiver operation, and implications to installation relating to the
beacon signal.
The new GPS engine technology supports multiple RF front ends - enabling tighter coupling
of measurements from separate antennas for use in heading-based products. Users will
achieve excellent accuracy and stability due to the more accurate code phase measurements,
improved multipath mitigation, and fewer components.
The two smart GPS antennas are separated by 50 cm between their phase centers, resulting in
+/- 0.5° RMS heading performance. The smart GPS compass provides heading and positioning
updates of up to 20 Hz and delivers positioning accuracy of less than 1.0 m 95% of the time
when using differential GPS corrections from beacon (MX575C/MX575D only) or from Space
Based Augmentation Systems (SBAS).
Introduction | HS80/HS80A/MX575C/MX575D Manual
Figure 1-1: HS80/HS80A/MX575C/MX575D side view