Universal solution for precision and safe navigation and landing for UAVs.

Our company has developed a set of sensors and software, that provides a direct connection between drone and landing site, as a result, we ensure an accurate and safe landing even in the absence or weak GPS signal, strong and gusty wind, landing on charging station, or mailbox, operations in dark or fog.

The main problems when landing a drone:

  1. Missing or weak GPS signal.
  2. Strong or gusty wind.
  3. Not enough light, smoke or fog.
  4. Landing on a platform with a height different from ground level.
  5. Landing at a selected angle or landing in a warehouse.
  6. Landing in the strong directional sun.
  7. Landing on a moving object.
  8. Multi-point landing.

Problem - solution

  1. Missing or weak GPS signal. The accuracy of a standard GPS receiver may have deviations of ± 5 meters, if the landing is carried out near tall buildings, the signal may totally disappear. The algorithm of our system allows the drone to switch to the exact landing mode, as soon as the drone approaches the planned landing point within a radius of 50 meters. From this moment, the autopilot use location information provided by our device and no longer needs a GPS signal, the new landing point for the autopilot is the location of the ground sensor. Thus, our system allows you to land with an accuracy of 2 centimeters, surrounded by tall buildings and without a clear GPS signal.
  2. Strong or gusty wind. Third-party landing systems use different combinations of cameras and landmarks to make an exact landing. Such systems unable to make an exact landing in conditions of strong or gusty winds since the video system needs a constant camera position and if the picture is lost due to drone displacement by the wind, the system must again find a landmark. To increase the viewing angle, they can use a lens with a wider angle, but this reduces the height of the system. Our system operates in an angular range of ± 60º and can accurately and safely land the drone in 17 m/s wind conditions since for the operation of our system the drone just needs to be in the radius of transmission of the ground module.
  3. Not enough light, smoke or fog. Different landing systems use different combinations of cameras and landmarks to make an exact landing. Such systems unable to make an exact landing in conditions of low light or fog, because using visual landmark require good light, our system operate in IR light and do not require any light and can operate in a low transparent environment.
  4. . Landing on a platform with a height different from ground level. The majority of landing systems use GPS or different types of altimeters to calculate the altitude and planning landing based on this data, but a lot of cases require landing on the platform or balcony or roof, so those systems a useless. Our system calculates actual altitude at the sensor level and das did not care about how high the landing point is.
  5. Landing at a selected angle or landing in a warehouse. Some time for delivery you need to land under the roof or fly under obstacle, visual-based system unable to change the landing angle, so impossible to use for variable angle landing. Our system can be preprogrammed for specific angles for different locations landings, such as land inside a warehouse or land under a roof, or on the balcony.
  6. L. Landing in the strong directional sun. Third-party landing systems use different combinations of cameras and landmarks to make an exact landing. Such systems unable to make an exact landing in conditions of direct sunlight, impossible to find a landmark or sun reflection in camera. Our system uses IR light technology and does not affect by sunlight.
  7. Landing on a moving object. Special cases to delivery on moving mail trucks or on the ship. Requires to be able to follow the landing point, most of the system only can land on fix landing points on the ground level. Our system can land on moving objects and follow the object using our proprietary landing technology.
  8. Multi-point landing. Parcel delivery required the ability to use one airborne sensor with multiple ground sensors. The majority of landing systems use paired devices, so unable to land on multiple landing sites. Our system can communicate multipoint, any airborne device able to land on any ground device.

Simple installation

The small size and the presence of several alternative interfaces allows integrating the landing system into almost all existing autopilots. For the user, I2C, UART and CAN interface are available through which the drone can get full information about the current state of the system. A simple protocol will make it possible to connect autopilot as quickly as possible at the software level. Each module has a USB port for device diagnostics as well as simple installation of fresh software updates.

Advanced features

The system does not require additional sensors for its work. The onboard unit can independently determine the distance to the landing site. This allows landing on platforms that are significantly higher than the environment and information about the distance to the ground is significantly different from the actual height to the landing platform. The on-board receiver also does not require data from the drone inertial system and all changes do not depend on the inclination and speed of movement of the aircraft - this allows you to work stably with strong gusts of wind when the angular position of the drone changes very quickly. Low power consumption (less than 0.3 watts for the onboard module and 1.1 watts for the ground module) allows the system to operate for a long time from a small power source. It is possible to easily change the approach path (to make it not vertical but at an angle) - this allows the vehicle to land in places where there is an obstacle on one side (for example, a balcony).

Use cases

  • Drone Home Deliveries
  • Drone charging stations.
  • Indoor drone navigation

Specifications

Distance range m. (ft.): 0.3 - 20.0 ( 1 - 65 )
Working angle (deg): +/- 20.0
Data update frequency (Hz): 10
ULS-QR1 (on board unit):
Dimensions mm (inch): 21 x 41 x 11 ( 0.83 x 1.61 x 0.43 )
Weight g. (oz.): 10 ( 0.35 )
Power Consumption (W): 0.3
Voltage supply (V): 7.5 - 27
Interfaces: USB(for configuring and firmware upgrade),CAN,UART,I2C
ULS-QT1 (on ground unit):
Dimensions mm. (inch.): 63 x 38 x 20 ( 2.5 x 1.5 x 0.8 )
Weight g. (oz.): 45 ( 1.6 )
Power Consumption (W): 1.1
Voltage supply (V): 7.5 - 27
Interfaces : USB(for configuring and firmware upgrade)

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