HCS885EXF Smart Helical GNSS Antenna; High Precision; Precise Heading; u-blox NEO-F9P

 

Overview
The HCS885EXF is a multi-band (L1/L5), multi-constellation integrated GNSS receiver/antenna with RTK  corrections and PointPerfect® Flex PPP-RTK augmentation compatibility. The HCS885EXF is capable of providing sub 1 meter accuracy stand alone, sub 6 cm accuracy with PPP-RTK corrections and sub 1 cm with RTK corrections. It is capable of moving base RTK Precise Heading, and can act as either base or rover. It is based on the Calian HC885SXF antenna, making it light-weight and very suited for unmanned aerial vehicle (UAV) applications that require precise location and precise heading.  

Interference Resilience
The HCS885EXF incorporates a latest generation multi-band (L1/ L5) GNSS receiver with a Tallysman precision tuned multi-band (L1/ L5) helical antenna that provides excellent axial ratios and operates without the requirement for a ground plane.  The state of the art  GNSS receiver supports concurrent tracking of all four major constellations (GPS, BeiDou, Galileo and GLONASS) in multiple frequency bands.  The concurrent multi-band (L1/L5) access to all four satellite constellations improves the receiver’s convergence capability to deliver a quick, precise and reliable position solution.  
The multi-band architecture is the most effective method for the removal of  ionospheric error, and the L5 band provides superior interference and multipath performance vs. L2.  The HCS885EXF employs Tallysman eXtended Filter (XF) technology which mitigates near-band and out-of-band interference such as LTE signals and their harmonics, enabling operation in the most challenging deployments.  

PPP-RTK, RTK and Precise Heading
The HCS885EXF supports PointPerfect® Flex PPP-RTK augmentation, over network connections, and RTK base/rover capability, with moving base RTK Precised Heading, particularly useful for UAV and robotic applications.  The HCS885EXF can be configured as a multi-receiver base/rover pair.  Combining fast survey-in of the base unit with moving base RTK enhances the location accuracy as well as the heading accuracy.  HCS885EXF mounts fluxh with three thredded inserts for secure attachment and provides a rubber O-ring around the outer edge for seal.  Control, corrections and position output are delivered via a 6 pin JST receptacle connector inset into the base. 
 

• Improved noise immunity with multi-band u-blox NEO F9P GNSS receiver
• PointPerfect® Flex PPP-RTK (networked)
• RTK Base/Rover configurations and Moving Base RTK Precise Heading
• Excellent Right-Hand circular polarized signal reception
• Multi-band GNSS receiver has high resilience to ionospheric errors
• Light-weight precision-tuned helical element; with excellent axial ratios and Calian’s Tallysman eXtended Filtering
• 5V operation
• CMOS signalling with RS232 option
• Custom tuning to OEM enclosure
• Surface mount with O-ring seal
• 6-pin JST port for Pixhawk framework compatibility

 

Specifications:

Serial Protocol
Output		NMEA 0183, UBX Binary, RTCM v3.3, SPARTN v2.0
Baud Rate		Configurable
Update Rate (PVT)		7 Hz (4); 8 Hz (GPS+GAL+BDS); 18 Hz (GPS+GAL); 20 Hz (GPS+GLO); 11 Hz (GPS+BDS); 25 Hz (GPS)

 

Mechanical
Dimensions		38.75 mm dia. x 41.11 mm H
Weight		8 g
Mounting Method		Customer Defined

 

Electrical
Voltages		5 VDC
Current		110 mA (nominal)

 

Environmental
Operating Temperature		-40ºC to +85ºC
Storage Temperature		-40ºC to +85ºC
Weatherproof		Not Applicable
Shock		Vertical axis 50G,other axis 30G 3 axis sweep – 15 min
Vibration		10-200 Hz log sweep 3G

 

Sensitivity (4 Constellations)
Tracking & Nav		-167 dBm
Reacquisition		-160 dBm
Hot starts		-157 dBm
Cold starts		-148 dBm

 

Acquisition
Cold start		27 sec
Aided start		3 sec
Reacquisition		3 sec

 

Posistion and Velocity Accuracy (4 Constellations)
Horizontal PVT/SBAS/RTK (CEP)		1.5m/ 1.0m/ 0.01+1ppm
Horizontal PPP-RTK (CEP)		<0.1m SPARTN;
Vertical PVT/SBAS/RTK (R50)		2.0m/ 1.5m/ 0.01m+1ppm
Vertical PPP-RTK) (R50)		<0.20m SPARTN;
Typical Convergence		<12s RTK; <65s SPARTN;
Velocity accuracy		0.05m/s

 

Heading
Dynamic Heading Accuracy		0.3 degrees (50%@30 m/s)
Precise Heading Accuracy		0.4 degrees ( > 1m baseline)

 

Timing
Timing Accuracy		30 ns RMS