53 results about "Satellite" patented technology

In a system and method for handoff using a hybrid network, a wireless local area network (WLAN) terminal determines its own position information through communication with a code division multiple access (CDMA) base station and a global positioning system (GPS) satellite, and a cell mapping server obtains information about a WLAN cell where the WLAN terminal is currently located from the WLAN terminal position information, determines information about a cell to which the terminal is expected to be handed off from the current position of the WLAN terminal, and provides the cell information to the WLAN terminal. This allows handoff to be performed without scanning a destination access point, thereby significantly reducing WLAN handoff time.

An apparatus for tracking an object associated with an sports event or activity, such as a golf ball and the like, includes a GPS receiver incorporated in the ball and receiving GPS signals from a satellite. A processor generates data related to the position of ball and generates data indicative of the location as a function of time. The data is then stored in the ball or a server. A processor receives the data and uses it to generate two- and three-dimensional renditions of the flight of the ball during a game, or game portions. For example, a display may show a graphic image incorporating the path of the ball, its current location on a map of the course, its location after it stopped moving (so that it can be found easily) and so on.

A system and method for an antenna which is constructed into or conforming onto the roof or wall of a cargo container is provided. The antenna system may have multiple antennas for short range wireless, cellular, global positioning, or satellite built into a single functional element. The antenna system may utilize a patch or phased array design. The method of construction of the antenna system may as part of the container fabricated or installed at the factory, applied as an adhesive film kit, or applied as a successive spray coating and etching process.

Methods, apparatuses, and systems enabling an information exchange system allowing for the transmission of a message carrier containing at least one message code along with video and television data, as well as subsequent capture and decoding of the message carrier to identify the at least one message code. As discussed herein, implementations of the invention can be used in connection with an electronic commerce and data interchange system featuring a Universal Digital Assistant (UDA) that facilitates financial transactions and data interchange, as well as dissemination, management and exchange of commercial information (e.g., advertising, promotions, sales announcements, and the like) and personal information (e.g., address and other contact information, driver's license number, and memberships). The invention, in one implementation, provides an end-to-end e-commerce solution that can transform a mobile phone/PDA (Personal Digital Assistant) into a Universal Digital Assistant configured to receive data (e.g., advertising, promotions, and sales announcement information) based on message codes encoded into message carriers disseminated through advertising and content from analog and digital television broadcasts, television receivers, the Internet, wireless signals, radio broadcasts, satellite broadcasts, and print media.

A remotely controlled apparatus for grasping an object such as a satellite in space includes a free-flying grasper unit connected by a selectively extendable cable to an orbital platform. The orbital platform and the grasper unit are preferably each independently propelled by respective propulsion systems including multi-axis maneuvering nozzles respectively provided on the orbital platform and on the grasper unit. The grasper unit preferably includes a grasper unit body and a grasper-arm mechanism having a controllable grasping claw articulately mounted on the end of a controllable telescoping arm that extends from the grasper unit body. The grasper unit preferably further includes a camera and a distance measuring sensor to provide visual and distance feedback data for assisting the remotely controlled maneuvering of the grasper unit and actuation of the grasper-arm mechanism.

A speech navigation method of the vehicle's satellite navigation system for the complex cross of road includes inputting the start position and destination to the system by user, choosing the optimal path on a digital navigatino map, receiving GPS signals to determine the current position on said digital map, and speech prompting of the running direction at complex cross when the distance threshold of speech prompting reaches.

An antenna unit includes an antenna module that receives radio waves sent from a satellite or earth, a cover member that has enough inner space to house the antenna module and has an opened bottom surface, and a bottom plate that closes the opened bottom surface of the cover member, and the antenna unit is attached to a resin-made attachment part. A metal sheet is provided on a back surface side of the resin-made attachment part, and the antenna unit is adhesive bonded and fixed on a surface side of the resin-made attachment part correspondingly to an arrangement position of the metal sheet.

The invention discloses an intelligent rainwater system based on runoff simulation and multi-sensor monitoring, and an operation method. The system comprises a runoff simulation and control host basedon a GIS, a meteorological forecast and runoff satellite monitoring server, a distributed small meteorological station, a vertical surface rain condition monitor, a movable rainfall radar, an infrared video monitor, an evaporation measuring instrument, a rainwater pipe network flow monitor, a water quality online monitor, an air quality monitor, a radar rainfall monitor, an infiltration area saturation monitor, an accumulation area water level monitor, a shallow-layer underground water level monitor, a surface runoff monitor, a waterproof unmanned aerial vehicle with a speed measuring buoy, an optical fiber temperature sensing system, an optical fiber pressure sensing system, a communication module, an intelligent controller, a rainwater utilization facility water supply point, a high-position rainwater hydroelectric generation module, a submersible conveying pump, a pressurization infiltration device and the like. According to various parameters, the rainfall flood disasters are subjected to scientific early warning and warning, and measures are adopted, so that the disaster risk of rainfall flood disasters to a building area or a building can be reduced.

A system and method that allows remote monitoring by satellite of cargo carried on a mobile conveyance. The system and method provide for a wireless information module (WIM) on the conveyance for transmitting and receiving data from a plurality of wireless devices on the conveyance over a short range wireless network. The WIM relays data to a remote monitoring facility via satellite. Other applications of the system and method include, but are not limited to, remotely controlling wireless devices on a conveyance such as door lock sensors and electronic seals, remotely upgrading the software loaded on the devices within the mobile conveyance, and creating an ad-hoc network of multiple WIMs to maintain satellite communication with all WIMs in the network when certain of the WIMs are unable to communicate directly with a satellite.

An electronic timepiece enables a simple construction, and an electronic device has the electronic timepiece. A wristwatch 1 has a button A 6; a mode setting unit 32 that sets the operating mode of the wristwatch 1 based on an input operation of the button A 6. Based on the continuous input time that the button A 6 is operated continuously, the mode setting unit 32 changes the operating mode between a timekeeping mode that receives satellite signals from one or more GPS satellites and adjusts the internal time information based on time information contained in a received satellite signal; and a positioning mode that receives satellite signals from three or more GPS satellites and adjusts the internal time information based on time information and positioning information contained in the received satellite signals.

The invention discloses a satellite ground micro-vibration test system. The satellite ground micro-vibration test system comprises a high-sensitivity sensor used for extracting vibration signals near a disturbance source or a load, an anti-aliasing filter used for performing anti-aliasing filtering on the vibration signals extracted by the high-sensitivity sensor to form piezoelectric signals, a high-modulus conversion rate acquirer used for generating the piezoelectric signals into digital signals and a high-precision controller used for controlling display, storage and analysis of the digital signals. According to the invention, the high-sensitivity sensor realizes small-magnitude acquisition of the vibration signals, digital signals are generated through a high-precision data acquisition card after the vibration signals are subjected to the anti-aliasing filtering, and subsequent process is performed to provide efficient input for the subsequent satellite vibration reduction or vibration isolation and environmental test and also realize verification of vibration reduction or vibration isolation performance. Therefore, the satellite ground micro-vibration test system, disclosed by the invention, has the advantages of satisfying demands on acquisition and analysis of micro-vibration signals and being of great importance in improving control precision and stability of a satellite platform.

A tethered spacecraft is tethered to a base using a semirigid stand-off and a moving tether operated as a belt drive and operated in tension so that the tethered is precisely positioned in tension from the base spacecraft.

The disclosure provides an approach for image segmentation from an uncalibrated camera array. In one aspect, a segmentation application computes a pseudo depth map for each frame of a video sequence recorded with a camera array based on dense correspondences between cameras in the array. The segmentation application then fuses such pseudo depth maps computed for satellite cameras of the camera array to obtain a pseudo depth map at a central camera. Further, the segmentation application interpolates virtual green screen positions for an entire frame based on user input which provides control points and pseudo depth thresholds at the control points. The segmentation application then computes an initial segmentation based on a thresholding using the virtual green screen positions, and refines the initial segmentation by solving a binary labeling problem in a Markov random field to better align the segmentation with image edges and provide temporal coherency for the segmentation.

The invention belongs to the technical field of geographical space and data analysis, and particularly relates to a river characteristic classification data processing method. Firstly river space distribution image data photographed by the satellite are collected, rivers are divided into natural river and non-natural river characteristic information according to the interference degree on the rivers, and ground object remote sensing interpretation marks are constructed for the characteristic information of the rivers through the ground object shape, hue and texture structural difference of the rivers; then the structural breaks of the rivers are identified according to the constructed ground object remote sensing interpretation marks, and calculation of enclosing degree, winding degree and riverbed sediment is performed on the river reaches segmented by the river structural breaks; and the rivers are classified based on the riverbed sediment type indexes and the river types are determined and the river type border lines are adjusted based on the riverbed geomorphic unit indexes, and the connected same type river reaches are merged to establish a river type tree so that the workload of river classification is greatly reduced and speed of river classification data processing is enhanced.

Each time mobile communication terminal 10 moves a distance of 150 kilometers, it computes its approximate position by performing a stand-alone position measurement, and stores the approximate position. When mobile communication terminal 10 needs to precisely measure its location it notifies position measurement assist server 30 of the stored approximate position, to thereby perform a GPS position measurement operation by using satellite capturing data transmitted, accordingly, from position measurement assist server 30.

The invention provides a detection method for detecting an infrared weak and small target. The method comprises the steps of background suppression: suppressing the background of a target by utilizing brightness contrast significance-based radiation energy characteristics and the isotropic characteristics of a fan-shaped Gaussian differential filter; track extraction: extracting the movement track characteristics of the target by utilizing an inter-frame difference method and a constant false alarm rate threshold value segmentation method; and result output: according to the movement track continuity of the track, obtaining a final detection result. The invention further provides a detection system for detecting the infrared weak and small target. Based on the technical scheme of the invention, the directional characteristics, the energy characteristics and the movement characteristics of the ground observation image of a sky-based satellite are comprehensively analyzed. Therefore, the interference on various complex false alarm sources on the ground surface is effectively weakened. The false alarm rate of the detection is reduced, and the robustness of the algorithm is enhanced. Moreover, the calculation is simple and efficient, and the real-time performance is high. The method and the system can be conveniently realized on a hardware platform.

A protecting strategy based on MPLS satellite network is a fault protecting mechanism based on the MPLS satellite network, which is used to solve the protecting problems of QoS traffic flow when the satellite network goes wrong based on MPLS. Different from traditional protecting strategy, a virtual standby route in the invention does not realize true resource reservation, thereby advancing utilance of satellite bandwidth resource, also dynamically changing protecting force of the traffic flow, with definite flexibility. In view of characteristics of the satellite, through maintaining the virtual standby route, the virtual route does not fail because of change of satellite network topology. The protecting strategy also solves the problems of failure of traffic LSP generated when switching the satellite, through the method of the invention, the QoS traffic flow is transmitted to the virtual standby route when the satellite node or the satellite link fails.

The invention provides a delay determinacy message retransmission method with a local cache. A receiving end requests data which needs retransmitted from a sending end unequivocally, and information of more than one lost data section is included in a request. The local cache is arranged, lost messages can be subjected to local retransmission, and accordingly the phenomenon of packet loss of a reverse link ACK can be avoided. The method is a strategy through which loss restoring is carried out quickly with limited bandwidth, on a channel with large delay and error rate and asymmetric link bandwidth, the frequency and the amount of message retransmission are reduced, and the problem of channel efficiency lowering during packet loss caused by reverse channel bandwidth limiting on the channel is avoided. By arranging the local cache, the problem that channel transmission efficiency is low due to large delay when reverse ACK messages are lost can be solved. According to the method, satellite link message retransmission efficiency can be greatly improved, and satellite channel using rate is greatly improved.

The invention discloses a Beidou short message cloud computing platform system. The system comprises a physical facility layer, a platform layer module, a control interface layer and an application layer, wherein the physical facility layer provides hardware support comprising the network resource, the computing resource, the storage resource and the satellite communication resource; the platform layer provides a data collection system and a service execution system to perform the data acquisition and processing; the control interface layer provides the data collection system, the data analysis system, a data reporting system and a service process management system; the application layer realizes the interaction with the control interface layer by using the own network source of the application. Through the way of combining the Beidou short message and the computing way of the internet, the software and hardware resource and information are shared, so that the Beidou short message technology can extensively applied through the internet; the user can select as required without autonomously constructing, and the development difficulty of the Beidou short message technology is lowered.

The invention provides a high-precision time reproduction method of comparing and controlling a crystal oscillator based on satellite common view. A user measures a time deviation between a satelliteand the crystal oscillator of the user and takes as the deviation 1. At the same time, a national time service center base station measures a time deviation between the satellite and UTC (NTSC) and takes as the deviation 2. The user transmits the deviation 1 to the base station every set time period, and the base station compares the deviation 1 and the deviation 2 in the same time period, and obtains the time deviation of the user relative to the UTC (NTSC), and the time deviation is taken as the deviation 3. The base station transmits the deviation 3 to the user, and the user obtains time deviation data for adjusting and controlling the crystal oscillator. In the invention, the time deviation data is used to control the crystal oscillator so as to realize a time reproduction signal so that user reproduction time is synchronous with universal time maintained by a national time service center, and simultaneously user cost is saved.

A gun barrel that can be used to fire projectiles. The gun barrel may be used in satellite-launching operations, in artillery operations, or in fire-fighting operations. The gun barrel has an outer support layer, an inner support layer lining the bore of the gun barrel and a compressible material disposed between the outer support layer and inner support layer. The support layers may be steel, and the compressible material may be concrete. In one embodiment, the breech portion is made of a metal, for example, steel, and the remainder of the gun barrel is made of an inner support layer an outer support layer and a layer of compressible material therebetween. The gun barrel of this invention is less expensive to make and lighter than a similarly-sized gun barrel made of steel, while being sufficiently strong to launch large projectiles.

The invention relates to composite material frames for spacecrafts such as satellites and the like. The problem to be solved is to provide a method for realizing a light-weight high-accuracy composite material frame, and the high-accuracy requirement on the installation of effective loads is met through processes. The device is characterized by mainly comprising rectangle cross section rod pieces[1], joints [2], joint spacers [3], joint bushing blocks [4] and rod built-in pieces [5] which are made of composite materials, wherein a frame main body consists of a certain number of rectangle cross section rod pieces [1] and joints [2] in the integral structure; the rod built-in pieces [5] are hinged in the rectangle cross section rod pieces [1]; the joint spacers [3] are hinged on the outer surfaces of the joints [2]; and the joint bushing blocks [4] are hinged inside the joints [2]. By the method, the problems of installation and supporting between the effective loads and bodies of the spacecrafts such as the satellites and the like are solved, the installation accuracy of the effective loads is effectively ensured, and the local rigidity requirement on the installation of the effective loads is met simultaneously; and the method has good effects of ensuring the machining stability of the integral structure and improving the applicability and the reliability of the structure.