FAQ

The Locator One features a multi-band GNSS antenna and receiver with 184 channels for receiving:

• QZSS: L1C/A, L2C
• GPS: L1C/A, L2C
• GLONASS: L1OF, L2OF
• Galileo: E1B/C, E5b
• BeiDou: B1I, B2I

No, after a successful transfer is confirmed via a handshake, the data is automatically deleted from the device. The Locator One will make up to three attempts to send the data. This behavior is configured by the user in the project settings within Parvamoti. If a new measurement begins before the previous one is sent, the unsent measurement will be overwritten.

The radar distance sensor measures a conical area downward at an angle of approximately 12°. At a distance of 2 meters from the ground, it measures a representative distance based on a footprint (circle) with a diameter of about 70 centimeters. As the distance increases, the footprint grows proportionally.

Assuming the Locator One is fully charged, measures once per day (each GNSS measurement lasting 5 minutes), and operates at ambient temperatures between 0°C and 30°C, it can function for at least 6 months without sunlight.

The components are tested to operate between -20°C and +60°C. At extremely low temperatures, the power unit remains functional, but energy storage is less efficient. Under such conditions, we cannot guarantee a measurement interval of 24 per day. Users may need to reduce the interval. The Locator One will operate at -20°C but may only support one measurement per day under such circumstances.

The thermometer is an internal sensor (-40°C to +70°C) that provides information about the interior temperature of the Locator One. It also gives insights into environmental conditions. For instance, deformation of an object may occur due to thermal expansion. To differentiate between structural deformation and thermal effects, users should consider thermal expansion data. As an example, the Eiffel Tower in Paris can be 15-20 centimeters taller in summer than in winter due to the steel’s expansion.

The Locator One updates its settings based on its scheduled measurement time. If you change the settings after the set measurement time, the device will pick up the new settings only at the next scheduled time. For example, if the device is set to measure once a day at 00:00 and you update the settings at 14:00, the new settings will only be adopted at 00:00 during the next measurement cycle.

This delay is part of Locator One’s design to ensure low energy consumption. For more details about how the measurement protocol works, see the Device overview.

LTE-M coverage is required to use the Locator One device. A Connectivity map shows the countries where LTE-M coverage is available. In rural areas, LTE-M connectivity may not always be guaranteed. You can easily check LTE-M coverage with the device. More details are provided in the Knowledge Base (link to Knowledge Base).

No, due to telecommunications legislation and regulations, it is not possible to build a private LTE-M network.

The device will make up to three attempts to send the data. This behavior is configured by the user in the project settings within Parvamoti. If a new measurement begins before the previous one is successfully transferred, the unsent measurement will be deleted.

No, this is included in your credits. Our global LTE-M provider ensures seamless LTE-M communication with your local provider. This service is automatically activated and requires no additional contracts or payments.

We provide a special mounting plate that supports various adapters, such as a 5/8-inch thread or a Leica adapter, allowing flexible mounting options.

Yes, we can supply USB charging cables for the Locator One. This cable charges the Locator One in approximately 8 hours and can also be used to reset the device. Please note that during charging, the Locator One cannot be used for measurements. For special projects requiring continuous charging, please email us at sales@basetime.nl.

Yes, various roles with associated rights are defined in Parvamoti. See User Roles.

Yes, if the EPSG code of the local date is known, it can be done. There is also the possibility of adding a Geoid. To add a horizontal and vertical date, the Basetime support department should be contacted (support@basetime.nl). If the user has defined their own coordinate system, we can also make this available upon request.

No, the time of the measurement cannot be changed afterward. The Locator One only measures data as configured. After taking a measurement, the device goes into a deep sleep and strictly follows the user-specified measurement protocol (configured in the project settings in Parvamoti). It does not take any additional measurements in the meantime.

Yes, but the precision will not be as high as when using a Locator One as a reference station. In general, the accuracy is reduced by half, with possible deviations in height of around 5 cm. These quality limitations are inherent to virtual reference networks and cannot be improved by Basetime. However, using the “averages” option in the Parvamoti dashboard can help improve accuracy.

No, to monitor horizontal and vertical movements, a stable reference station within 4 km is necessary. A virtual reference station (VRS) could be used as an alternative, but it may not provide the same level of precision.

Yes, if the EPSG code of the local datum is known, coordinates can be provided. We also have a database of geoids to correct altitudes to the appropriate vertical datum. With the launch of our Measure Management System (MMS) later this year, users will be able to define their coordinate systems directly in their project environment. If a specific coordinate system is defined by the user, we can also make it available upon request.

A 95% success rate is guaranteed because external factors, such as malfunctions in the provider’s network, may occasionally prevent data from being sent.

To guarantee precision (Horizontal: 2 mm + 0.5 ppm, Vertical: 4 mm + 0.5 ppm) and a success rate of 95%, the reference station should be within 4 kilometers of the rover. While longer distances are technically possible, they are not recommended due to reduced accuracy.

Settlement rod measurements determine both the height and horizontal position of the rod. If the rod becomes skewed during the project, our algorithm automatically detects the skew and applies a correction. This ensures a corrected height is presented, preventing trend breaks. The corrected height is displayed in the data dashboard, while both corrected and uncorrected heights are available via the RESTful API.

The API is hosted in the eu-west-1 region. Ensure this region is included in your request headers. The API will handle data stored in different regions.

No, it’s not mandatory. We provide examples using both SigV4 and native Python libraries. SigV4 is easier to implement as it’s developed by AWS, but the native method doesn’t require extra libraries.

The api_url to retrieve all available projects is https://parvamoti-restful.basetime.nl/get-projects. To retrieve specific project data, use https://parvamoti-restful.basetime.nl/get-data.
Include the Project Name and Point ID in the request headers for the GET /get-data endpoint.

Yes, it’s universal. If you have access to multiple projects, it will return data for all accessible projects and points. New projects with available data are automatically included in the response.

The GET /get-projects command lists all available projects and their associated points. These can be used as headers in the GET /get-data requests.

Use GET /get-projects to identify the necessary headers for GET /get-data requests. See the RESTful API documentation for details.

Refer to the RESTful API documentation for the complete list of required headers and usage examples.