SingularXYZ Sfaira ONE GNSS Receiver User Manual

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SingularXYZ Intelligent Technology Ltd.

Address: Floor 2, Building A, No. 599 Gaojing Road, 201702 Shanghai, China

Tel: +86-21-60835489

Fax: +86-21-60835497

Website: https://www.singularxyz.com

E-mail: singularxyz@singularxyz.com

Copyright Notice

This is the V1.0 (Jun, 2023) revision of the Sfaira ONE GNSS Receiver User Guide. It cannot be copied or translated into any language without the written permission of SingularXYZ.

Technical Assistant

If you have any questions that can't be solved in this manual, please contact your local SingularXYZ distribution partner. Alternatively, request technical support from SingularXYZ Intelligent Technology Ltd.

Support Email: support@singularxyz.com

Support Skype: Support.SingularXYZ

Your feedback on this manual will help us improve it with future revisions.

Safety Information

Before using the receiver, please make sure that you have read and understood this User Guide, as well as the safety requirements.

• Connect your devices strictly based on this User Guide.
• Install the GNSS receiver in a location that minimizes vibration and moisture.
• Avoid falling to ground, or colliding with other items.
• Do not rotate the 7-pin Lemo port.
• Do not cover the radio; keep a sound ventilation environment.
• To reduce radiation, please keep above 2 meters away from the radiostation.
• Take lighting protection measures when installing antennas.
• Change the cable if damaged.

Use and Care

The receiver can withstand the rough treatment that typically occurs in the field. However, the receiver is high-precision electronic equipment and should be treated with reasonable care.

Warning and Caution

An absence of specific alerts does not mean that there are no safety risks involved. A Warning or Caution information is intended to minimize the risk of personal injury and/or damage to the equipment.

WARNING: A Warning alerts you to a potential risk of serious injury to your person and/or damage to the equipment, because of improper operations or wrong settings of the equipment.

CAUTION: A Caution alerts you to a possible risk of damage to the equipment and/or data loss.

Warranty Notice

SingularXYZ does not warranty devices damaged because of force majeure (lightning, high voltage or collision).

SingularXYZ does not warranty disassembled devices.

©2023 SingularXYZ Intelligent Technology Ltd. All rights reserved.

1 Introduction

The SingularXYZ Sfaira ONE GNSS Receiver User Manual is aimed to help you get familiar with the Sfaira ONE GNSS Receiver and start your project effectively. We highly recommend you to read this manual before surveying, even if you have used other GNSS RTK receivers before.

1.1 Overview

The Sfaira ONE GSS receiver is equipped with a high-precision GNSS engine which can simultaneously track GPS, BDS, GLONASS, Galileo & QZSS, providing stable and accurate centimeter-level positioning. The Sfaira ONE receiver has ultra-small size and strong anti-interference ability, making it possible to work even in harsh environments. It is an ideal RTK/GNSS product for surveyors.

1.2 Receiver Features

The Sfaira ONE GNSS Receiver key features include:

• Portable: Φ50 mm × 149 mm, Ultra small size and 409g super light.
• Can work at high intensity continuously for more than 16 hours.
• Cable-free Bluetooth wireless technology.
• 1408 channels of simultaneously signal tracking.
• Centimeter level accuracy.
• IP65 waterproof.
• Designed to survive a 1.5m drop onto concrete.

1.3 System Composition

The Sfaira ONE GNSS Receiver system includes:

• Sfaira ONE GNSS Receiver *1
• USB-Type C Cable *1

[Image: SingularXYZ Sfaira ONE GNSS Receiver]

[Image: USB-Type C Cable]

2 Setup of the Sfaira ONE

2.1 Environment Requirements

To ensure reliable performance, it is best to use the receiver in safe environmental conditions:

• Operating temperature: -45°C to +75°C.
• Storage temperature: -55°C to +85°C.
• Keep away from corrosive fluids and gases.
• Ensure a clear view of the sky.
• Do not expose to water for a long time.

2.2 Power Supply

The Sfaira ONE GNSS receiver comes with a large 4800mAh rechargeable Lithium-ion battery that supports Type-C charging. The internal battery provides an effective survey workflow with about 16 hours of operating time as a rover. However, this operating time varies based on environmental conditions.

Receiver Safety

Charge and use the Receiver only in strict accordance with the instructions below:

• Do not use or charge the Receiver if it appears to be damaged. Signs of damage include, but are not limited to, discoloration, warping, and leaking Receiver fluid.
• Do not expose the Receiver to fire, high temperature, or direct sunlight.
• Do not immerse the Receiver in water.
• Do not use or store the Receiver inside a vehicle during hot weather.
• Do not drop or puncture the Receiver.
• Do not open the Receiver or short-circuit its contacts.

Charging the Lithium-ion Receiver

Please use a Type C cable for charging. Follow these instructions when charging your batteries:

• Charge the Receiver completely before using it for the first time.
• A full charge takes approximately 2 hours per Receiver at room temperature.
• If the Receiver has been stored for a long time, charge it before your fieldwork.
• Re-charge the Receiver at least every three months if it is to be stored for long time.

Storage of the Lithium-ion Receiver

Keep the receiver in dry and room temperature conditions.

3 Connect with SingularPad

3.1 Create a New Project

Click Project Manager, then click the New button in the lower left corner of the screen. Input the project name, set coordinate systems parameters, and save the project. In the Project Manager interface, you can click on previous projects in the Project List to remove or open them.

[Image: SingularPad interface showing Project Manager with options like Project Manager, Localization, Calibrate Point, etc., and a list of projects.]

If you have added a project, you can click the project name in the main interface to check the current project details, including Project Name, Project Path, and Coordinate systems parameters. You can also edit them.

How to create a user-defined datum: If you cannot find the desired datum in the list, follow these instructions to add one: select ellipsoid parameters, projection parameters, datum parameters, and input horizon adjustment, vertical adjustment, and local offsets based on your request. Save and apply it. You can also share the coordinate system with your colleagues.

[Image: Create Project screen showing Basic Information, Coordinate systems parameters, and Local parameters.]

[Image: Create Project screen showing Coordinate systems parameters with options like Datum, Ellipsoid Parameter, ITRF Parameter, Projections Parameter.]

[Image: Coordinates System Favorites screen showing a list of predefined projections.]

3.2 Connect to Receiver

After creating a new project, switch to the Device tab and click Connection. You can connect SingularPad with SingularXYZ Sfaira ONE receivers. You should choose the correct types, search, and connect the Bluetooth of the Sfaira ONE.

[Image: SingularPad Communication screen showing Device Type, Manufacturer, Model Type, Connection Type, and Device Para.]

[Image: SingularPad showing Bluetooth Device list with Sfaira ONE selected.]

Tips: If you fail to connect with the receiver through SingularPad, follow the on-screen prompts to go into the device Bluetooth setting interface to ensure Bluetooth is paired successfully. Sometimes, you may need to forget the device Bluetooth, restart the receiver or software, and pair again.

[Image: SingularPad showing connection status and device information.]

3.3 Quick Setup Your Receiver

The Sfaira ONE can only be used as a rover in Phone Internet mode. Set it to Rover, set the Data Link as Phone Internet, and Connect Mode as NTRIP. Enter the IP address, Port, User, and Password of your CORS. Click Get to retrieve the mount point, then select the mount point and click Start. You can determine if the connection is successful by whether you have received data. If data is received, click Apply, and the position status will change to Fixed.

[Image: SingularPad Rover mode settings screen showing Datalink Settings, Connect Mode, CORS Settings, and MountPoint Settings.]

[Image: SingularPad showing selection of Connect Mode (NTRIP, TCP Client, ZHD, CHC).]

[Image: SingularPad showing MountPoint selection.]

[Image: SingularPad showing data reception status and Start button.]

[Image: SingularPad showing FIXED status and RTK information.]

3.4 Survey

In the Survey interface, click Point Survey, then enter the point name, code, and antenna height. Click the Start/Stop icon (▶️) to start or stop collecting data. You can check:

• Antenna height in the survey interface.
• Point coordinates by tapping Elem.
• Layers (e.g., Google Map, Google Satellite, DXF/SHP) by tapping Layer.
• All points on the interface by clicking the corresponding icon ().
• Receiver position by clicking the corresponding icon () if the arrow is out of sight.
• Measurement parameters such as RMS limit, Occupation time, etc. ().

[Image: SingularPad Survey interface showing Point Survey, Detail Survey, Control Point, etc. and the map view with point information.]

[Image: SingularPad showing point details in the Point Database.]

[Image: SingularPad showing Settings > Tool Bar options.]

3.5 Stake Out

Go to the Stake Point interface. Click to choose a point and tap Stake. SingularPad provides a navigation map when staking points/lines. If you are close enough to the target point, it will alert you based on the alarm range you set.

[Image: SingularPad Stake Point interface showing navigation map and point selection.]

Actions available:

• Click ▶️ to start or stop stake points.
• Click to scale automatically.
• Click to jump to the lasted point.
• Click to jump to the next point.
• Click to jump to the previous point.
• Click ⚙️ to set stakeout settings, display info, and tool bar. You can edit the prompt range and range error.
• Click to open the compass.

You can click the Target:Point in the lower right corner to change the point you are staking out.

[Image: SingularPad Stake Out interface showing navigation details and point information.]

[Image: SingularPad Stake Out interface showing stake point details and settings.]

4 RTK Workflow In SingularSurv

4.1 Create a New Project

Click Project, set the project name, and select the project datum.

[Image: SingularSurv Project interface showing options to create or open a project.]

In the Project interface, you can click Create to add a new project or click Open to open a previous project. If you have added a project, you can click View or click the project name in the main interface to check the current project details, including Project name, store path, and datum parameters. Click the QR code to share your datum information to others. You can also click Edit to change the datum parameters, or change them in the Datum interface.

To edit datum parameters, SingularSurv supports three methods: Use last project, Datum store, and Scan QR code.

• Use Last project: If you have added a datum before, you can choose to use the datum of the last project for the current project.
• Scan QR code: Support to get the datum from other users.
• Datum store -> Select a Predefined datum: You can select a datum directly from the list. SingularSurv currently has 49 country datums and will add more.
• Create a User-defined datum: If you cannot find the desired datum in the list, follow these instructions to add one: select Source ellipsoid, Target ellipsoid, Projection for your datum, and even seven parameters, geoid model based on your request.

[Image: Datum Store screen showing list of datums and options to add a new datum.]

4.2 Connect to Receiver

After creating a new project, switch to the Device tab, then tap Connection. Choose NMEA Device as the Device model, and choose Bluetooth as the Connection type. Click to select the Sfaira ONE Bluetooth to connect; the Bluetooth number is its SN.

[Image: SingularSurv Connection screen showing Device model, Connection type, Target device selection.]

[Image: SingularSurv showing Bluetooth connection options.]

After connecting successfully, the top of the screen will show the positioning status.

Tips: If you failed to connect with the receiver through SingularSurv, follow the prompt information to go into the device Bluetooth setting interface to ensure Bluetooth is paired successfully. Sometimes you may need to restart the receiver or SingularSurv.

4.3 Quick Setup Your Receiver

You should add an antenna model for Sfaira ONE; the antenna L1 offset parameter is 149mm. You should add a model for Sfaira ONE and choose it.

Go to Device > Rover to set up your Sfaira ONE. Click Add to add a work mode. Choose the PDA CORS as the Data link type, enter the IP address, port, user, and password. Click Get to retrieve the mount point, then select the base. Click Confirm and OK to save the work mode, then click Apply to apply the work. When it is applied successfully, return to the main interface to check the RTK status.

[Image: SingularSurv Rover setup screen showing Antenna settings.]

[Image: SingularSurv Antenna manager showing existing and new antenna configurations.]

[Image: SingularSurv Rover setup screen showing Datalink type as PDA CORS.]

4.4 Survey

When you get the fixed solution, you can go to Survey, then Topo Survey. Enter the point name, and click the Start/Stop icon (▶️) to start or stop collecting data. You can check:

• Antenna height in the survey interface.
• Point coordinates by tapping Elem.
• Layers (e.g., Google Map, Google Satellite, DXF/SHP) by tapping Layer.
• All points on the interface by clicking the corresponding icon ().
• Receiver position by clicking the corresponding icon () if the arrow is out of sight.
• Measurement parameters such as RMS limit, Occupation time, etc. ().

[Image: SingularSurv Survey interface showing Topo Survey and other survey types.]

[Image: SingularSurv Survey interface showing map view and settings.]

4.5 Stake Out

Go into the Stake Point interface. Click to choose a point and tap Stake. SingularSurv provides a navigation map when staking points/lines. If you are close enough to the target point, it will alert you based on the alarm range you set.

[Image: SingularSurv Element screen showing stake point selection.]

[Image: SingularSurv Stake Point interface showing navigation and point details.]

[Image: SingularSurv Stake Point interface showing navigation details and point information.]

5 Connect with GIS Software

The Sfaira ONE receiver is very suitable for GIS measurement. Compared to ordinary receivers, it has a smaller size, lighter weight, and retains powerful performance. If you want to use Sfaira ONE with other GIS software for measurement, please follow these steps. Let's take Qfield as an example.

First, you should connect Sfaira ONE with SingularPad and set it up to get a fixed solution.

Second, in the software settings, enable the location services. This will share the high-precision positioning data to the controller.

Go to the system settings of your controller, click the system version 5 times to open the developer options. In the developer options, there is a function called Select mock location app. This function will use the position from the app as the controller's position, and you should select SingularPad.

After that, you can go to Qfield, choose the Internal device for Positioning Device. It will use the position of the controller, which is the RTK fixed position from the Sfaira ONE.

Then you can do your GIS work.

[Image: Controller's Software Settings screen showing options like Language, Text encoding, etc., and Enable location services.]

[Image: Controller's Developer options screen showing Select mock location app.]

[Image: Qfield Settings screen showing General, Positioning, and Variables tabs, with Positioning device in use set to Internal device.]