A system for intelligent non-disruptive airspace integration of unmanned aircraft systems (UAS) is disclosed. The system includes an onboard positioning system and altimeter that determine a current position and altitude of the UAS. Under normal conditions, the UAS remains in inert mode: a transceiver listens for and decodes transmissions from nearby aircraft and ground-based traffic and control facilities. If certain conditions are met (e.g., proximate aircraft, altitude ceilings, controlled or restricted airspaces) the system may declare an alert mode. When in alert mode, the transceiver broadcasts position and identifier information of the UAS to alert neighboring aircraft to its presence. Intelligent transmission strategies regulate the power level or rate of alert-mode transmissions to reduce spectrum congestion due to high UAS density. Alert-mode transmissions continue until the underlying conditions change and inert mode is resumed.

A proximity sensor for a Laser Guided Bomb (LGB) is provided. A proximity sensor for a Laser Guided Bomb (LGB) includes: an electronics package unit (EPU) configured to be connected to a front end of a warhead; and at least one sensor separate from the EPU and configured to be connected to a forward adapter that is connected to the front end of the warhead. The at least one sensor is configured to obtain data that is used to determine a height above ground of the LGB. The EPU is configured to compare the determined height above ground to a predefined value. The EPU is configured to generate a detonation signal for the warhead based on the determined height above ground being equal to or less than the predefined value.

The disclosed subject matter relates to a laser scanner for scanning a ground from a seaborne or airborne vehicle, comprising a scanning unit for emitting a fan-shaped scan pattern made of laser beams fanned out about a scan axis and for receiving the laser beams reflected off the ground and an evaluation unit connected to the scanning unit for evaluating the laser beams that are received. The laser scanner is characterized by a measuring unit that is designed to measure the height of the vehicle above ground, and an actuation device that can be anchored to the vehicle and that is connected to the measuring unit. The actuation device is designed to rotate the fan-shaped scan pattern of the scanning unit with respect to the vehicle about a first actuation axis that is different from the scan axis, depending on the measured height above the ground.

An operation method of an unmanned aerial vehicle (UAV) includes determining a distance between the UAV and a ground reflector in front of the UAV by using a radar wave emitted obliquely downward by a radar carried by the UAV, determining terrain information in front of the UAV according to the distance between the UAV and the ground reflector in front of the UAV, and adjusting one or more operation parameters of the UAV according to the terrain information.

A method for determining wave height by means of a radar carried by an aircraft, the method implementing the following steps: a first step of pointing the antenna of the radar; a second step of determining the clutter acquisition plan according to the altitude of the aircraft; a third step of determining, for each clutter zone defined by the acquisition plan, two Doppler parameters PARA1 and PARA2 characterising the zone as a whole; a fourth step of calculating the average values of the parameters PARA1 and PARA2 over all of the zones in question; and a fifth step of estimating the wave height from the averages of the parameters PARA1 and PARA2. The wave height estimated in this way is transmitted to the aircraft and used to determine the conditions for the water landing of the aircraft.

A power line inspection method includes obtaining, by an unmanned aerial vehicle, relative distance information of a power line relative to a target, determining a to-be-adjusted position of the power line that needs to be adjusted according to the distance information, and sending information containing the to-be-adjusted position to a control terminal.

Embodiments of the present disclosure provide a method for determining height. The method includes obtaining a plurality of reflection points within a predetermined angle range below an object to be detected; coordinating the plurality of reflection points; performing function fitting on the plurality of coordinated reflection points; determining a measured height of the object to be detected at a current time based on a function obtained by fitting; and weighting the measured height of the object to be detected at the current time and a predicted height of the object to be detected at the current time to determine an optimal estimated height of the object to be detected at the current time.

A system and method of landing an aircraft. The system includes a human machine interface responsive to an input from an operator, and a processor. A region of interest for the aircraft is selected. A representation of a potential landing zone associated with the region of interest is presented at a human machine interface. A suitability of the potential landing zone for landing is evaluated to obtain an evaluation score. The evaluation score for the potential landing zone is presented at the human machine interface. An input is received at the human machine interface to select the potential landing zone. The aircraft is landed at the selected landing zone.

A network system can communicate with user and provider devices to facilitate the provision of a network-based service. The network system can identify optimal service providers to provide services requested by users. The network can utilize context data in matching service providers with users. In particular, the network system can determine, based on context data associated with a user, whether to perform pre-request matching for that user. A service provider who is pre-request matched with the user can be directed by the network system to relocate via a pre-request relocation direction. When the user submits the service request after the pre-request match, the network system can either automatically transmit an invitation to the pre-request matched service provider or can perform post-request matching to identify an optimal service provider for the user.

Devices and methods for testing altimeters are provided. A radio-frequency (RF) signal may be received from an altimeter and passed through an RF delay module to delay the RF signal. The delayed RF signal may be converted to an optical signal, which may be passed through an optical delay module to delay the optical signal. The system tests the accuracy of the altimeter based on the combined RF signal delay and optical signal delay.