1147 results about "Flight time" patented technology

An apparatus and method of charging and housing of an unmanned vertical take-off and landing (VTOL) aircraft is disclosed. The apparatus includes an accommodator to accommodate an aircraft, a landing platform on which the aircraft lands, a housing portion to monitor state data by housing or charging the aircraft, and a sensor to assist in landing of the aircraft by allowing the aircraft to communicate with the apparatus. The apparatus enhances operational efficiency by reducing a travel time of the aircraft.

The invention discloses a laser three-dimensional imaging device based on a single-photon detector, belonging to the technical field of photoelectric instruments. A target to be detected is irradiated by the laser pulse emitted by a pulsed laser via a scanning system; the returning photons are received by a receiving/emitting co-axial optical system, i.e., the returning photons are received by a double-gating single-photon detecting module via a spectral filter and a spatial filter and an arriving pulse is outputted, so that the photon flight time of the target measuring point can be measured by combining the laser emission detection and the multi-photon arriving pulse time; and a data processing unit is used for carrying out the coordinate conversion based on the position and attitude data, scanning mirror targeting data, and photon flight time of the three-dimensional imaging device, de-noising and three-dimensional image construction and correction, so as to output the reliable target three-dimensional range image. The invention solves the problems that the existing laser three-dimensional imaging device is incapable of penetrating vegetation and camouflage and being miniaturized when conducting long-distance operations.

The invention discloses an unmanned aircraft electric quantity early warning method and a device; the method comprises the following steps: using a satellite positioner to obtain inward journey drop point information of the unmanned aircraft; obtaining present position information of the unmanned aircraft, and calculating a horizontal distance and a vertical height difference between the present position of the unmanned aircraft and the inward journey drop point; obtaining battery state information of the unmanned aircraft, and calculating a maximum horizontal distance and a maximum climb or descending height of the unmanned aircraft using residual electric quantity at a preset flight speed; determining whether the electric quantity of the unmanned aircraft has reached a lowest critical point of safety inward journey or not according to the horizontal distance and the vertical height difference between the present position of the unmanned aircraft and the inward journey drop point, and the maximum horizontal distance and the maximum climb or descending height of the unmanned aircraft using residual electric quantity at the preset flight speed; if yes, controlling the unmanned aircraft to fly back. The unmanned aircraft electric quantity early warning method and the device can maximize a task flight time while ensuring the safety of the unmanned aircraft, thus maximizing the utilization efficiency of the aircraft.

Provided is an airborne multi-antenna SAR chromatography three dimensional imaging system and an imaging method thereof. The invention is directed to the field of electronic signal processing technology and particularly relates to an SAR (Synthetic Aperture Radar) chromatography three dimensional imaging technology. According to the invention, a multi-antenna system structure is used to realize an SAR chromatography three dimensional imaging characterized by low flight risk, high resolution and large range. A multi-antenna working mode of single reception and multiple transmissions is adopted to reduce a loader load; meanwhile the possible imaging height scope is enlarged twice. An imaging method based on signal sparse expression is employed to realize a single flight super-resolution three dimensional imaging of the multi-antenna system. After the multi-antenna system structure is adopted, it requires less flight times to realized the three dimensional imaging. Meanwhile, the design of each flight locus is more flexible. Spaces are expanded for the application of SAR three dimensional imaging technologies in the airborne platform.

The invention relates to an assembly digital field based on a flexible array pressure sensor and a method for training gait. Parameters of an athlete including action time sequence, action frequency, position calibration, stress center point, stress time and flight time can be acquired through acquiring information including pressure of foot soles of the athlete contacted with the flexible array pressure sensor unit in the assembly digital field. The digital field and the method have the advantages that the requirement of real time can be met in longer distance; the module of the assembly digital field can be disassembled and assembled arbitrarily, and can extract gait characteristics on multiple sports training events; and the athlete can correctly recognize the training effect of the athlete self through a sports effect evaluation system and an expert system, and adjust the training plan in real time. The digital field and the method can also be applied in the field of mode recognition.

The invention discloses a small low-altitude light area array laser radar measuring system. The master control sub-system of the measuring system triggers a pulse laser emitting module to emit lasers, the lasers are collimated and generate two paths of laser signals through a beam splitting sheet, one path is used for determining the time of emitting the lasers and generating timing starting signals, the other path irradiates an object through beam expansion, echo signals are received by an APD array detection module and generate N2 paths of stopping pulses, and a multi-channel high-precision time interval measuring module is combined with starting signals to measure the round-trip flight time difference of N2 paths of lasers of a rectangular detection area. The location attitude measuring sub-system, the master control sub-system and the area array laser radar distance-measuring sub-system of the measuring system are integrated, original three-dimensional information can be obtained in real time, and assembling and verification are eliminated. The laser radar measuring system does not need scanning, three-dimensional imaging can be achieved through a single pulse, the imaging speed is high, measuring precision and working efficiency are high, the size is small, the weight is small, and the small low-altitude light area array laser radar measuring system is suitable for being carried small low-altitude light remote sensing platforms.

An unspecified-time airline ticket representing a purchased seat on a flight to be selected later, by the airlines, for a traveler-specified itinerary (e.g., NY to LA on March 3rd) is disclosed. Various methods and systems for matching an unspecified-time ticket with a flight are also disclosed. An exemplary method includes: (1) making available an unspecified-time ticket; (2) examining a plurality of flights which would fulfill the terms of the unspecified-time ticket to determine which flight to select; and (3) providing notification of the selected flight prior to departure. The disclosed embodiments provide travelers with reduced airfare in return for flight-time flexibility and, in turn, permits airlines to fill seats that would have otherwise gone unbooked. Because of the flexibilities required of the unspecified-time traveler, unspecified-time tickets are likely to attract leisure travelers unwilling to purchase tickets at the available published fares and, at the same time, are likely to “fence out” business travelers unwilling to risk losing a full day at either end of their trip. Moreover, the flexibilities required of the unspecified-time traveler need not be limited to a departure time; the flexibilities may also include the airline, the departing airport, the destination airport, or any other restriction that increases the flexibility afforded the airline in placing the traveler aboard a flight. The disclosed embodiments thus permit airlines to fill otherwise empty seats in a manner that stimulates latent and unfulfilled leisure travel demand while leaving their underlying fare structures intact.

Processing passengers for departure from an airport comprises a first line for passengers to be processed through a control point on the basis of first-in first-out. There is a second line for passengers to be processed on a non first-in first-out basis. The availability for the second line is determined by at least one of the following characteristics, namely the status of the passenger relative to an airline class of service; delays in flight times of one or more flights using the airport; cancellations of other flights using the airport; security factors at the airport; staffing at the airport; calendar date of flight, time of day of flight; number of passengers for the flight; numbers of passengers for other flights; and baggage handling. The system also processes passengers for arrival at an airport. The system also processes passengers for arrival at an airport so as facilitate baggage handling.

The invention relates to a device for assisting in the choice of a diversion airport for an aircraft piloted by a crew (200), said aircraft comprising a flight management system including location means (207) calculating the position of the aircraft, said device comprising a navigation database (202) and a performance database (203) of the aircraft, said device being characterized in that it comprises:

• • a company database (201) comprising airports and characteristics of said airports,

means (205) of calculating a list of airports, called candidate airports, from the airports in the company database, from the navigation database and from the selected characteristics by the crew,

• • means (204) for calculating remaining flight time and fuel consumption predictions for each of the candidate airports from the position of the aircraft, from weather conditions and from the performance database,

an interface giving the favoured airports for diversion according to pre-established criteria or determined in real time using the interface.

The invention discloses a flight control method for an unmanned aerial vehicle. The method includes the first step of collecting coordinate information transmitted by a platform for landing and taking-off of the unmanned aerial vehicle, the second step of targeting the landing platform according to the collected coordinate information, the third step of controlling the unmanned aerial vehicle to fly to the place near the targeted platform and then collecting image information of guiding marks, used for guiding the unmanned aerial vehicle to land at the position and orientation on the platform, of the platform, and the fourth step of controlling the unmanned aerial vehicle to land onto a supporting device prearranged on the platform according to the guiding marks and distance information detected by a prearranged distance sensor. The invention further discloses an unmanned aerial vehicle control device. Through the flight control method and device for the unmanned aerial vehicle, the control accuracy of the unmanned aerial vehicle is improved, the weight of the unmanned aerial vehicle is reduced, and the flight time is prolonged.

The invention provides an unmanned aerial vehicle cruising and monitoring system for forest fire. The weight of the unmanned aerial vehicle is reduced, flight time is prolonged, an unmanned aerial vehicle cruising range is enlarged, route planning is carried out for fire monitoring, and an unmanned aerial vehicle flight control system is combined with a geographic information system. The route planning not only guarantees monitoring quality and monitoring full coverage but also considers the hardware parameters and the flight safety of the cruising unmanned aerial vehicle, a rotary head carries a thermal infrared imager and a colorful high-definition camera, the thermal infrared characteristics of the image of the forest fire are fully utilized, and an automatic monitoring and identification method for forest fire information is designed. Even if the forest fire monitoring distance of the unmanned aerial vehicle is long, fire characteristics can be accurately captured. A colorful high-definition image is compressed and transmitted back to a ground command post, a high-definition fire video image can be quickly transmitted to the ground, a fire position can be accurately reported, so that convenience is brought to the ground command post in accurately judging a fire situation and organizing people to fight the fire, and precious fire-fighting time is saved.

A method and system corrects motion blur in time-of-flight (TOF) image data in which acquired consecutive images may evidence relative motion between the TOF system and the imaged object or scene. Motion is deemed global if associated with movement of the TOF sensor system, and motion is deemed local if associated with movement in the target or scene being imaged. Acquired images are subjected to global and then to local normalization, after which coarse motion detection is applied. Correction is made to any detected global motion, and then to any detected local motion. Corrective compensation results in distance measurements that are substantially free of error due to motion-blur.

The invention relates to a method for implementing flight time slot allocation. The method is realized through the assistance of a computer management system, and the system also comprises a flow management program generating/evaluating subsystem which is used as an operation platform for the method for implementing the flight time slot allocation. Based on statistics and prediction of flow and capacity, the method discovers the arisen or possibly arisen flow problems in time, assists flow managers to propose various proposals for solving the flow problems and corresponding implement effects, assists the flow managers to make a final decision, allocates take-off time slots meeting integrally optimal, impartial and just principles for flights needing ground delay through take-off time slot allocation algorithm in particular in a ground delay program, and has innovation, practicability and higher promotional value in improving the current situation of the domestic air traffic flow technology field.

A method implemented by computer for optimizing the cruising trajectory of an aircraft comprises the steps consisting in receiving the parameters of a reference trajectory, the trajectory comprising one or more plateaus and the transitions between these plateaus, the transitions being ascending or descending; and determining, in response to a request received in the course of the flight, at least one candidate alternative trajectory; and determining one or more indicators associated with the candidate alternative trajectory such as determined. Developments comprise the optional display of at least one indicator, indicators associated with the fuel consumption, with a difference in flight time or with the operational cost of the flight of the aircraft, the use of ratios of indicators, the inhibition of descending transitions, particular plateau length transitions as well as economical modes of transition. System aspects are described, comprising avionic or non-avionic means.