117 results about "Satellite technology" patented technology

A method and apparatus are provided for changing the form of the jaw and facial bones of an adult patient that did not develop fully during childhood. The method utilizes a device having a plate body with an expansion screw that fits within the mouth of the patient; flap springs that project from the plate body, and an overlay extending from the plate body. The device is placed within the mouth of the patient so that the overlay is in a position between at least two opposing teeth. In this position, opposing teeth contact the overlay during function (e.g. swallowing). This intermittent, unilateral application of force to the facial bones causes these bones to further develop, positioning out of place teeth into more proper positions, and inducing a more symmetrical and enhanced appearance of the face, as well as increasing the airway space behind the jaws. Concomitantly, the flap springs gently press against selected teeth that are out of alignment in order to guide those teeth into place. Simultaneously, the expansion device maintains these forces on the teeth, while assisting the jawbones to expand to accept the teeth in their proper position. The expansion device can be adjusted by small motors under the control of a microprocessor located on the body plate based on readings from sensors on the flap springs. The expansion device can be adjusted by remote signaling, using a global position satellite technology and global position coordinates.

The current invention discloses a wireless monitoring system. The system has one or more monitoring devices. Each device can transmit data and receive messages from an output center or alarm system. The output center can also transmit and receive messages. Both the output center and each device preferably have a transceiver that enables both the transmission and receipt of messages. No remote terminal units or hardwiring is required for the system to function. The system is truly a wireless gas monitoring system. The system may use low earth orbit satellite technology, or licensed radio frequencies or any other means to wirelessly transmit and receive messages.

A digital, wireless PC/PCS modem is disclosed for incorporation with personal home computers, laptop units, hand-held computer units, and cellular phones for providing wireless communication via satellite transmission. The invention is a device that combines a personal computer (PC) modem with a satellite link and relay system for computers. This will allow the user to establish a communications link with Internet(TM) access, access to direct dial telephones, faxing on demand, hyperterminal access for remote computer link-up, video, and voice applications. Utilizing existing software and hardware, this invention uses digital satellite technology and combines it with a PC modem for access to various communication links including phone links, without a phone line. In order to accomplish this, the laptop has a type II PCMCIA card slot for receiving the PC modem. An antenna is attached to the plug-in cellular phone card for the modem using a swivel joint assembly.

A satellite support and administration system includes a web based portal to allow widespread user access to advanced satellite technology at extremely low costs. The system supports the sequential launch of increasingly sophisticated satellites having limited life spans. Each satellite is equipped with a powerful array of sensors for space based measurement of scientifically and commercially important phenomena. A ground based platform supports and encourages the development of software and custom applications to operate experiments utilizing the processors and sensor array on the satellite.

The invention discloses a satellite mobile voice communication system with an extra-low speed, and relates to the satellite technology. The satellite mobile voice communication system with the extra-low speed based on a forwarding type satellite navigation system can be built by taking advantages of GEO (geostationary orbit) communication satellite resources (or other satellite resources) in the current forwarding type satellite navigation system, adopting a speech compression coding with the extra-low speed and a ground mobile voice communication network technology, and determining a communication system, signal characteristic and a system composition of the satellite mobile voice communication through an optimized design of satellite channel, a microminiature satellite terminal and an optimized design of ground network control technology. The system provided by the invention has the advantages of system resource sharing, flexible and effective network and combined navigation and communication capability, and can provide a low-cost voice communication application service and can be applied to an air-ground emergency communication system and a measurement system with small data volume demand.

A system and method are provided for establishing location-based push-to-talk communication groups. A location determining application is incorporated within a communication network for members of a push-to-talk group. This application may include global positioning satellite technology incorporated in mobile communication devices carried by the members, a triangulation application incorporated at a communications server, or an RFID application associated with the members. Location data obtained on the members is maintained in a database that is accessible to a communications server facilitating communication between the members. When a member initiates a push-to-talk communication, other members of the group are contacted based upon their locations. The communication can be selectively transmitted to either those within a pre-designated location, or outside of the pre-designated location.

The invention discloses a capturing and tracking system based on a relay terminal and an automatic target tracking method. The system comprises a Ka relay antenna, a filter module, a low noise amplifier module, a single-channel modulation module, a Ka/C frequency conversion module, a capturing and tracking module and a servo control module. Due to the adoption of the automatic target tracking method, a relay satellite beacon antenna forward single-beacon signal can be captured and tracked by a low-track satellite relay terminal. Compared with the technology that TM01 is adopted as a difference mode and an analog processing method is adopted in the prior relay satellite technology, the automatic target tracking method has the advantages that a TE11 sum mode and TE21 difference mode higher-order mode error generation method meets the requirements that any polarization signal can be tracked by the relay terminal and azimuth and pitching error cross coupling is small; due to the utilization of a method for capturing and tracking a beacon signal large in frequency offset and low in signal to noise ratio, large-frequency-offset frequency compensation and dynamic tracking are achieved, and system sensitivity is high; due to the utilization of a digital azimuth error delta A and pitching error delta E extraction, separation and filter method, requirements for high-precision target orientation and tracking are met.

A method and apparatus are provided for changing the form of the jaw and facial bones of an adult patient that did not develop fully during childhood. The method utilizes a device having a plate body with an expansion screw that fits within the mouth of the patient; flap springs that project from the plate body, and an overlay extending from the plate body. The device is placed within the mouth of the patient so that the overlay is in a position between at least two opposing teeth. In this position, opposing teeth contact the overlay during function (e.g. swallowing). This intermittent, unilateral application of force to the facial bones causes these bones to further develop, positioning out of place teeth into more proper positions, and inducing a more symmetrical and enhanced appearance of the face, as well as increasing the airway space behind the jaws. Concomitantly, the flap springs gently press against selected teeth that are out of alignment in order to guide those teeth into place. Simultaneously, the expansion device maintains these forces on the teeth, while assisting the jawbones to expand to accept the teeth in their proper position. The expansion device can be adjusted by small motors under the control of a microprocessor located on the body plate based on readings from sensors on the flap springs. The expansion device can be adjusted by remote signaling, using a global position satellite technology and global position coordinates.

The invention discloses a cloud computing-based radio frequency identification and mobile communication equipment to construct a geographic information Internet of Things system. Using radio frequency identification technology and global satellite positioning technology, and using mobile communication equipment terminals, wireless mobile communication networks can be rapidly deployed, solving the defects of traditional fixed networks that require wiring. In the communicable area, the mobile communication equipment terminal automatically senses any movable object with a radio frequency automatic identification electronic tag entering the sensing area, and intelligently automatically samples the logistics information. The collected data is connected to the Internet of Things and becomes part of the data of the Internet of Things. It is solved that the positioning information of moving objects in the Internet of Things is lagging and high-latency. The present invention can locate the current latest earth geographic location information of the moving object in real time at any time.

The invention discloses a capturing and tracking system based on a relay terminal and an on-orbit phase calibration method. The system comprises a Ka relay antenna, a directional coupler module, a first filter module, a second filter module, a first low noise amplifier module, a second low noise amplifier module, a single-channel modulation module, a Ka/C frequency conversion module, a capturing and tracking module and a servo control module. The on-orbit phase calibration method includes the steps that by means of the curve characteristics that pitching and orientation are orthogonal and the phase of the pitching is 90 degrees ahead of orientation, when the single-channel modulation module and a channel N-place phase shifter change in a linear progressive increase mode from 0 degree to 360 degrees, the relative phase error of a sum channel and a difference channel is calculated, and automatic on-orbit angle compensation is carried out. Compared with the method that a ground calibration and correction tower is adopted for phase calibration and a fixed phase value is set in the prior satellite technology, the on-orbit phase calibration method guarantees angle compensation correctness, improves phase calibration simplicity, real-time performance and repeatability and reduces error cross coupling terms brought by phase differences.

The present invention relates to a nonlinear transformation-based phase-modulated signal frequency offset estimation and tracking method. According to the method, on the basis of theoretical analysison two-phase BPSK, four-phase balanced QPSK and unbalanced four-phase UQPSK modulated signals, primary nonlinear transformation or secondary nonlinear transformation is utilized to obtain symbol influence-removed radio frequency single-carrier signals, and therefore, preconditions are created for FFT (fast Fourier transform) spectrum analysis to realize carrier frequency offset estimation fast andaccurately. Compared with existing satellite technology which directly performs processing such as FFT spectrum analysis on phase-modulated signals, the method of the invention can assist solving technical shortcomings of dispersion of envelop spectrum peak points and large frequency offset estimation error and greatly improving the accuracy and real-time performance of frequency offset estimation and tracking of the phase-modulated signals, and has a bright application prospect in realizing carrier frequency offset estimation and tracking of phase-modulated signals of different links of a satellite.

The invention relates to a satellite positioning technology, and discloses a measurement, operation and control system and method for a low-orbit satellite constellation. The measurement, operation and control system comprises N common-orbit inter-satellite links corresponding to N orbital planes, each common-orbit inter-satellite link is used for data transmission between node satellites of the corresponding orbital plane, and N is larger than or equal to 2; and the system further comprises a satellite-ground link which is used for specifying the node satellites running to the intersection ofthe N orbital planes in each common-orbit inter-satellite link as hub satellites, and each common-orbit inter-satellite link performs data transmission with at least one ground station arranged nearthe latitude of the intersection of the N orbital planes through the hub satellites. According to the embodiment of the invention, while the low-orbit satellite constellation measurement, operation and control requirements are met, the technical complexity of the satellite is reduced, the cost of the satellite and the ground station is reduced, and the engineering feasibility of real-time measurement, operation and control of the low-orbit satellite constellation is improved.

The invention relates to an excavator intelligent high-precision positioning method based on satellite navigation, belongs to the field of satellite technology comprehensive application, and aims to solve the problem that in the prior art, automatic, intelligent and high-precision positioning of an excavator cannot be achieved. A receiver, a measurement type antenna, a single-axis angle sensor, adouble-axis angle sensor, a vehicle-mounted computer and other devices are installed on the excavator. The accurate positions of the excavator and main parts of the excavator can be solved through a Beidou high-precision space information technology and an analysis algorithm, the relative coordinates of all points under the operation posture of the excavator are reasonably analyzed and solved by constructing side-looking and top-looking two-dimensional coordinates, and accurate positioning of all the main parts can be completed through coordinate system conversion. On the basis of accurate positioning, rapid positioning can be achieved, the positioning precision is improved, automatic guiding and tracking of the excavator are completed, and the engineering application requirements of different industries are met.

The invention provides a low-orbit internet constellation satellite-ground link planning method based on constraint satisfaction, and relates to the technical field of satellites, and the method comprises the steps: constructing a satellite-ground geometric visible model; constructing an inter-satellite distance visible model; constructing a satellite-ground link visible model according to the satellite-ground geometric visible model; acquiring measurement data between the target satellite and ground gateway station equipment according to the satellite-ground link visible model; determining constraint conditions; determining the validity of the measurement data according to the constraint condition, and establishing an effective measurement link matrix according to the validity of the measurement data; determining a satellite-ground networking planning principle; establishing a target satellite-ground link planning model according to a satellite-ground networking planning principle, constraint conditions and the effective measurement link matrix; and calculating the target satellite-ground link planning model to obtain a satellite-ground link resource scheduling result. According to the method, the planning constraint problems of neglecting constellation configuration, constellation orbit plane balanced use and the like during multi-task scheduling of a low-orbit constellation without an inter-satellite link are solved.

The invention relates to a satellite passive orbit measurement method and system, and relates to satellite technology. The satellite passive orbit measurement method of the present invention is to passively receive the radio signal broadcast by the satellite through the ground station, so as to realize the position measurement and orbit measurement of space objects such as satellites. The specific method is to set up 2 to 4 antennas in each measurement station, and use carrier signal waveform correlation to obtain the range difference D between the two antennas when receiving satellite signals. The rendezvous measurement model obtains the position and orbit of the satellite in space. While completing the above-mentioned rough orbit determination, 10-100 satellite position accuracy monitoring reference stations shall be established within the coverage area of ​​satellite signals. The vector correction number of the satellite position is obtained, so as to achieve the second high-precision orbit determination of the satellite.

The invention discloses an intelligent and safe school uniform device. The device comprises a school uniform body, an attendance detector and a server; an electronic assembly is arranged on the schooluniform body; the electronic assembly comprises an MCU main control module and an RFID electronic tag, a positioning module, a heart rate sensor, a motion sensor and a mobile communication module, which are respectively connected with the MCU main control module; the RFID electronic tag internally stores unique identification information of student identities; the positioning module is used for positioning the position information of wearers; the motion sensor is used for detecting movement states of the wearers; and the mobile communication module is used for sending detection information ofthe school uniform body to the server. The device is suitable for primary and secondary school students as well as kindergartens and universities; by applying an internet of things technology and a satellite technology, the intelligent and safe school uniform device can enable parents and schools to realize real-time monitor and authentication for positions, safety and identity recognition of underage students, so as to effectively reduce the concerns of schools and parents about child safety.

The invention provides a virtual satellite, and a software and algorithm test platform and method based on the virtual satellite, and relates to the technical field of virtual satellites. The platformcomprises a satellite control and state monitoring tool which carries out measurement and control on the virtual satellite and the injection of software/algorithm, and receives the downloading data of the virtual satellite, an internal test tool which monitors behaviors of the software/algorithm and performing performance test on the software/algorithm, and an external test tool which performs configuration item test and/or system test on the software/algorithm. The virtual satellite uses a data center as an interface to decouple a cloud computing platform simulator from a satellite platformsimulator and a load simulator. According to the invention, the integration degree of simulators can be improved through the virtual satellite; efficient sharing and reuse of test resources are realized through the monitoring tool and the test tools; and the problem that multi-region cooperation, distributed execution and large-scale parallel testing cannot be met in existing satellite testing issolved.

The invention discloses a method for predicting a tree growth trend in a power transmission line region based on a satellite technology. The method comprises the steps of obtaining a satellite remotesensing image of the power transmission line region by utilizing an SAR satellite remote sensing technology; processing the obtained satellite image; fusing the processed image with a power grid GIS,and determining a target area image; measuring the height of the same tree at different time points in the target area image through inversion; and comparing the heights of the trees at the same placeand different time points to estimate the growth trend of the trees. A tree growth trend monitoring system based on satellite wide-area remote sensing is constructed, basic information support is provided for tree barrier inspection of the power transmission line, the alignment of the inspection line is greatly improved, and safe and stable operation of the power transmission line is ensured.

The invention relates to a shock absorber group for a satellite whole satellite or a single-chamber transport packing box, and belongs to the technical field of satellites. Including satellite support bracket, upper connection ring, upper support, lower support, shock absorber and lower connection ring; the lower connection ring is placed on the bottom of the packing box, and the lower support is placed on the lower connection ring; the upper support is The upper connecting ring is a bracket on which the product is placed; the shock absorber is placed between the upper support and the lower support; both the upper support and the lower support are isosceles right triangles with an inner angle of 45 degrees. The present invention forms a shock absorber group by connecting the ring, the support and the shock absorber, which can adapt to the frequency change of various types of transportation modes of the packing box; Different and adjust at any time; the shock absorber group is installed at 45°, which can save the available height in the box and reduce the lateral displacement and shaking of the damped body.

The invention provides an information query method and an information query device based on Beidou short messages. The method comprises the steps: receiving a first Beidou short message transmitted bya user terminal, and enabling the first Beidou short message to be obtained through the conversion of the user terminal according to an recognition code; converting the first Beidou short message into an recognition code, and sending the recognition code to a data center; receiving first query information fed back by the data center, wherein the first query information is queried by the data center according to the recognition code; converting the first query information to obtain a second Beidou short message; and sending the second Beidou short message to the user terminal, so that the userterminal converts the second Beidou short message to obtain first query information. The Beidou satellite technology is utilized, the query information capable of being used for verifying the targetinformation is obtained through the Beidou short message and sent to the user terminal, information query and verification can be achieved in more regions, and the possibility that the information isstolen or tampered is effectively reduced.

The invention relates to the technical field of spaceflight launching satellites, and concretely relates to a compression and release device based on memory alloy. The device comprises a shell, a sliding block, a driving block, a split nut, a driving spring cover, a driving spring, a connecting rod mechanism, a small ball control mechanism and a driving mechanism, wherein the sliding block is arranged in the shell, the driving spring and the driving spring cover are arranged in the containing cavity of the sliding block from bottom to top, the split nut is in threaded connection with the driving spring cover, the split nut is connected with the sliding block through the connecting rod mechanism, and the connecting rod mechanism pulls the split nut when the sliding block moves downwards, so that locking of the driving spring cover is relieved; the driving mechanism, the driving block and the small ball control mechanism are arranged at the bottom of the shell from bottom to top, and the small ball control mechanism is arranged on the outer side of the lower end of the sliding block and used for limiting axial movement of the sliding block; and the driving mechanism is used for driving the driving block to rotate to a preset position. According to the invention, the task requirement of unfolding the satellite antenna is met, and the reliability and safety of compressing and releasing the satellite antenna are improved.

The invention discloses geosynchronous satellite time-sharing data transmission technology and satellite navigation positioning technology-based wide area geological disaster forecasting system and method. The system comprises a space section and a earth section, wherein the space section consists of a geosynchronous time-sharing data transmission satellite (geostationary earth orbit, GEO) and a navigation positioning satellite (medium earth orbit-geostationary earth orbit, MEO-GEO); the earth section consists of a earth surface displacement sensor terminal array system, a earth signal gate station, and a geological disaster monitoring center; the geological disaster monitoring center analyze the earth surface displacement distribution situation according to the information acquired by the earth surface displacement sensor terminal array system and sent by the geosynchronous time-sharing data transmission satellite and the navigation positioning satellite, analyzes and discovers the regions possibly having geological disaster dangers by utilizing an earth surface displacement-geological disaster trend mathematical model established in advance, and sending a caution command to all regions in the interior of the motoring center in time so as to ensure enough response time before the geological disaster occurs, thus loss of national life and property is avoided.

The invention relates to the technical field of communication satellites, in particular to an ultra-light satellite portable station comprising an antenna assembly and a support frame. The antenna assembly comprises an antenna surface, feed supports, a pitch transmission mechanism and an azimuth transmission mechanism. An electric box is integrally arranged on the back surface of the antenna surface. The feed supports are located on the two sides of the antenna surface. The feed supports are connected with the pitch transmission mechanism. The pitch transmission mechanism is connected with theazimuth transmission mechanism. The azimuth transmission mechanism is connected with the support frame through a quick mounting mechanism. The front surface of the antenna surface is connected with asecondary reflection surface at a fixed included angle through a radio frequency transceiver assembly limiting pull rod and a radio frequency transceiver assembly. An antenna controller, a satellitemodem and built-in equipment and the like are placed on the back of the antenna surface, which avoids direct sun exposure and optimizes the weight of the antenna. The antenna surface uses the folded hinge design, which eliminates the traditional multi-lobe assembly, greatly saves the erection time and enhances the integrity of the antenna.