568 results about "Satellite antennas" patented technology

Systems, methods, and articles for a wearable and lightweight portable power case are disclosed. The portable power case is comprised of a cylindrical housing, at least two battery elements connected to a printed circuit board (PCB), and at least one separating barrier between the at least two batteries and the PCB. The portable power case is operable to supply power to an amplifier, a radio, a wearable battery, a mobile phone, a tablet, a portable satellite dish and / or any other power consuming device. The portable power case is operable to be charged using solar panels, vehicle batteries, AC adapters, non-rechargeable batteries, and / or generators.

Systems, methods, and articles for a wearable and lightweight portable power case are disclosed. The portable power case is comprised of a cylindrical housing, at least two battery elements connected to a printed circuit board (PCB), and at least one separating barrier between the at least two batteries and the PCB. The portable power case is operable to supply power to an amplifier, a radio, a wearable battery, a mobile phone, a tablet, a portable satellite dish and / or any other power consuming device. The portable power case is operable to be charged using solar panels, vehicle batteries, AC adapters, non-rechargeable batteries, and / or generators.

The invention provides an inter-satellite laser communication rapid capturing method, and relates to the technical field of laser communication, and the method comprises the steps: determining the estimation space orientation of a satellite antenna based on the satellite parameters of a target satellite, and carrying out the scanning according to a target scanning strategy, and obtaining a scanning light spot result; performing pointing correction based on the light spot scanning result, and establishing a target communication link; and monitoring the data communication process of the target satellite based on the target communication link in real time, and performing corresponding adjustment when communication danger exists. Determining an estimated space direction of a satellite antenna based on satellite parameters of a target satellite; performing pointing correction based on a light spot scanning result and then establishing a communication link; the communication process of the satellites based on the communication link is monitored in real time, and a response is made when the communication process is found to be abnormal, so that the communication stability and reliability between the satellites are effectively enhanced.

The invention relates to the technical field of satellite communication, in particular to a multi-link data transmission method, device and system in a low-orbit satellite network. According to the invention, a multi-link data transmission mechanism is adopted, so that the satellite antenna is allowed to establish multiple communication connections with multiple satellites at the same time, and the limitation of single-link communication in the prior art is broken. Compared with an existing single-link transmission mode, bandwidth resources of multiple satellite links can be utilized to the maximum extent, and waste of link resources is avoided. By introducing the LSTM to predict the network performance, the problem of instability caused by network state fluctuation in the prior art is solved. The LSTM model can predict a future network state through historical data, so that when the network performance is about to deteriorate, a data distribution strategy can be adjusted in advance, and network instability caused by bandwidth fluctuation or satellite switching is avoided. Therefore, continuity and stability of data transmission can still be kept when the number of users is suddenly increased or satellites are switched.

The invention discloses a satellite antenna dynamic pointing calibration method and system based on satellite autonomous gradient optimization, relates to the technical field of satellite communication, and realizes closed-loop calibration without ground intervention by processing signal to noise ratio (SNR) data uploaded by a ground station on a satellite in real time and combining a multi-physical field coupling model of a temperature and stress sensor. And the pointing error in a dynamic environment is reduced from more than 2.0 degrees of a traditional scheme to less than 0.3 degrees.

The invention discloses an anti-suppression deception jamming detection suppression method and system, which combines the advantages of full autonomous navigation of inertial navigation, combines a satellite signal anti-interference processing technology, and comprehensively applies methods such as inertial / satellite integrated navigation, a multi-element satellite antenna array adaptive zeroing filtering algorithm, a beam forming algorithm and the like. And detection and suppression of suppression deception jamming are realized. According to the scheme of the embodiment of the invention, integrated navigation, a multi-array-element satellite antenna array zeroing adaptive algorithm and a satellite navigation anti-deception jamming signal processing method are integrated into one system at the same time; and a wave beam incoming vector obtained through combined navigation calculation is combined with a zero setting adaptive algorithm based on a multi-array-element satellite antenna array and an anti-suppression interference module, so that detection and suppression of suppression deception interference signals are realized. The scheme provided by the embodiment of the invention has a good anti-interference deception suppression effect.

The invention discloses a signal anti-interference method for a satellite remote sensing application system, and the method comprises the steps: receiving an electromagnetic signal from a remote sensing satellite through a satellite antenna, and carrying out the preprocessing; interference detection is carried out on the preprocessed signals, and when energy of partial scales is abnormally high, it is judged that interference exists in the digital signals; combining features extracted in interference detection into a feature vector, inputting the feature vector into a classification model constructed based on a convolutional neural network for interference classification, outputting the probability of each interference type, and selecting the type with the maximum probability as a judgment result; according to the output judgment result, interference signals existing in the digital signals are suppressed by adopting a corresponding self-adaptive filtering algorithm, and purified signals are obtained; performing inverse transformation on the purified signal by using a mother wavelet function, and reconstructing the signal; and storing the reconstructed signal in a digital file form, and transmitting the reconstructed signal to a ground station or a data processing center for subsequent analysis and application.

The invention relates to the technical field of satellite transmission service or radio transmission service of a space station or an airborne station, in particular to a narrow-band interference elimination method based on spread spectrum communication applied to satellite transmission service, which comprises the following steps: S1, performing FFT (Fast Fourier Transform) operation on a digital baseband signal, converting the digital baseband signal into a frequency domain signal, determining a judgment threshold according to the background noise power, and judging a component greater than the threshold as an interference signal; s2, based on a sequential return-to-zero algorithm or a sequential pruning algorithm, frequency points with interference signal components in each frequency domain under the AWGN condition are cut off; s3, using windowed FFT operation, and popularizing the application under the AWGN condition in the S2 to the application under the narrowband interference condition; and S4, reducing the frequency domain signal after the interference signal component frequency points are removed into a time domain signal by adopting IFFT (Inverse Fast Fourier Transform) operation. The method has a good application prospect in the fields of manufacturing of space-based satellite systems and other spacecrafts, manufacturing of satellite antennas and other communication system equipment, satellite transmission services and the like.

The invention discloses a plane matrix type high folding and unfolding bionic antenna truss structure with a negative Poisson's ratio effect, and relates to the technical field of space folding and unfolding mechanisms, the plane matrix type high folding and unfolding bionic antenna truss structure comprises a plurality of cell elements and a plurality of cell element connecting rods, transverse cell elements are connected through the cell element connecting rods, and longitudinal cell elements are fixedly connected through adjacent cell element cross beams; the cell element connecting rods are hinged to the cell elements on the two sides respectively, and the cell elements are three-level positioning inwards-concave hexagonal cell elements; the folding and unfolding antenna truss structure is in a folded state during launching, transportation and silent latency and is in an unfolded working state during on-orbit task execution, the high folding and unfolding ratio characteristic of the antenna provides bionic improvement inspiration for various urgent properties such as stealth and size reduction of a satellite antenna structure, the shape of the antenna folding and unfolding array can be changed in a multi-stage mode, and the antenna folding and unfolding array is suitable for large-scale popularization and application. Therefore, the functions of optimal frequency band adjustment, optimal area expansion, switching of different scanning ranges and the like are realized.

The invention discloses a communication satellite multi-beam resource management and control method based on deep reinforcement learning, and belongs to the technical field of satellites. According to the invention, through the multi-agent reinforcement learning algorithm, the allocation strategy of the beam resources can be dynamically adjusted and optimized. A satellite antenna wave hopping technology and a time division multiplexing method are utilized to flexibly cope with changes of ground user requirements and communication flow, so that the overall throughput of a satellite link is remarkably improved. The dynamic optimization mechanism ensures efficient utilization of resources, and improves the transmission rate and quality of a communication system.

The invention discloses a satellite antenna servo system vibration sound signal sample enhancement method based on a physical constraint generative adversarial network, and the method comprises the steps: carrying out the multi-mode signal collection and fault simulation, and providing a high-fidelity signal source for training; fault physical parameter modeling is carried out, and a fault physical parameter vector and a fault frequency equation are defined; constructing a physical constraint generative adversarial network training model, and designing a double-branch generator and a physical constraint discriminator; training the physical constraint generative adversarial network, and outputting a high-fidelity vibration sound sample; according to the invention, intelligent fault early warning and diagnosis support is provided for stable operation of a satellite communication system.

The invention relates to the technical field of satellite communication, and provides a high-orbit and low-orbit fused satellite antenna tracking method and system. The method comprises the following steps: constructing a global satellite database and carrying out time-space coordinate unified coding; predicting visible time according to the satellite coordinates, and identifying a visible time window overlapping region and a corresponding tracking satellite pair; based on the types of the satellite pairs in the overlapping time, tracking path optimization under space-time unified coordinates is carried out, and optimization control parameters are output; switching points and scanning tracks are spliced according to the control parameters, and antenna tracking control parameters are obtained and used for adjusting an antenna. According to the invention, the technical problem that the stability of a satellite communication link is reduced due to switching delay and signal interruption risks when a traditional ground station system dynamically tracks high and low orbit satellites is solved, seamless switching and continuous high-gain tracking of the satellite communication link are realized through cooperative tracking and real-time optimization operation of the multi-orbit satellites, and the stability of the satellite communication link is improved. And the link stability and the resource utilization rate of satellite communication are improved.

The utility model provides a satellite antenna structure and a satellite communication device, and relates to the technical field of satellite communication. The satellite antenna structure provided by the utility model comprises a plurality of antenna array surfaces, the angles of the plurality of antenna array surfaces are different, and the plurality of antenna array surfaces can work independently; each antenna array surface is used for forming a beam coverage area; according to the invention, the corresponding wave beam coverage areas are respectively formed at different angles through the plurality of antenna array planes, so that the whole airspace is correspondingly divided into the plurality of sub airspaces, the coverage of the whole airspace is realized, the scanning range is improved, the angle required by each antenna array plane during scanning is reduced, the scanning loss generated during large-angle scanning is reduced, and the scanning efficiency is improved. The antenna gain is improved; and secondly, the plurality of antenna array surfaces can independently work to generate wave beams, so that the satellite antenna structure can generate a plurality of wave beams at the same time, thereby obtaining a wider wave beam coverage range at the same time, and improving the scanning efficiency.

The utility model provides an adjustable hand-held terminal antenna integrating low orbit and Tiantong satellite communication, which belongs to the technical field of communication equipment and comprises a feed base. The fixed radiator is connected with the feed base; the movable radiating body is movably connected with the fixed radiating body and is arranged opposite to the feed base; the fixed radiator is used for radiating in a Tiantong mode; a radiation structure formed by the fixed radiator and the movable radiator is used for radiation in a low-orbit mode. According to the utility model, the low-orbit satellite antenna and the Tiantong satellite antenna are integrated into a whole, so that the volume of the antenna on the terminal equipment which needs to work in the Tiantong mode and the low-orbit mode respectively is greatly reduced, and the antenna has profound significance for the research and development of the satellite antenna.

The utility model provides a mobile terminal. The mobile terminal comprises three shells and an antenna system, wherein the three shells are sequentially and rotatably connected. The antenna system comprises a satellite antenna, the satellite antenna comprises a satellite radio frequency link, a first radiator, a second radiator, a third radiator, a first tuning circuit and a second tuning circuit, and the satellite radio frequency link is coupled with the third radiator. The first radiator, the second radiator and the third radiator are respectively arranged in different shells, and the three radiators are located at one end of the mobile terminal. The first radiator is coupled with the first tuning circuit, and the second radiator is coupled with the second tuning circuit. By adopting the scheme, when the satellite antenna is in a working state, the first radiating body and the first tuning circuit as well as the second radiating body and the second tuning circuit as well as the third radiating body can be utilized to jointly generate the target directional diagram of the satellite antenna, so that the optimization of the directional diagram of the satellite antenna and / or the gain of the satellite antenna is facilitated; therefore, the communication performance of the satellite antenna can be improved.

The invention relates to a dynamic path prediction method for satellite antenna tracking and computer equipment, and the method comprises the steps: collecting satellite antenna tracking angle data which comprise original data and actual data; calculating a first deviation sequence and a second deviation sequence based on the original data and the actual data; performing curve fitting on the first deviation sequence and the second deviation sequence through a fitting algorithm, substituting a fitting result into a pre-constructed mathematical model to obtain a prediction model, and extrapolating and predicting a prediction deviation of a preset time point through the prediction model; and compensating the predicted deviation to original data corresponding to the preset time point, and generating a dynamic range instruction, so that the satellite antenna is aligned with the communication satellite under the action of the dynamic range instruction. And the satellite antenna can continuously align to the real position of the communication satellite.

Systems, methods, and articles for a wearable and lightweight portable power case are disclosed. The portable power case is comprised of a cylindrical housing, at least two battery elements connected to a printed circuit board (PCB), and at least one separating barrier between the at least two batteries and the PCB. The portable power case is operable to supply power to an amplifier, a radio, a wearable battery, a mobile phone, a tablet, a portable satellite dish and / or any other power consuming device. The portable power case is operable to be charged using solar panels, vehicle batteries, AC adapters, non-rechargeable batteries, and / or generators.

The invention discloses a multi-beam VICTS antenna and a communication terminal, and the multi-beam VICTS antenna is of a multi-layer structure, and comprises a continuous cross section node slot radiation layer, a slow wave structure wave guide layer and a microstrip Rotmann lens feed network layer which are sequentially arranged from top to bottom. An air gap between the continuous section nodal gap radiation layer and the slow wave structure wave guide layer forms a quasi-plane parallel plate waveguide. An electromagnetic wave signal emitted by a satellite antenna enters a quasi-planar waveguide formed by the continuous cross section and the slow wave structure wave guide layer through a gap in the continuous cross section joint gap radiation layer, and electromagnetic waves are transmitted in the quasi-planar waveguide and are sent to the microstrip Rotmann lens feed network through the connection waveguide. And the beam is output from the beam port of the microstrip Rotmann lens. The multi-beam VICTS antenna provided by the invention can utilize multi-beam scanning in the same time period, has larger space coverage capability, and is beneficial to quick satellite finding when a communication-in-moving system is started and quick satellite recapturing after a satellite signal is lost.

The invention belongs to the technical field of frequency selective surface radomes, and particularly relates to a frequency selective surface-based low-frequency wave-transparent and high-frequency reflection device and a satellite radome, which sequentially comprise a first low-pass layer, a first dielectric isolation layer, a first band-stop layer, a second dielectric isolation layer and a second low-pass layer from top to bottom, the first low-pass layer and the second low-pass layer are the same in structure, and each of the first low-pass layer and the second low-pass layer comprises first metal patch patterns which are periodically arranged; each first metal patch pattern is composed of four square ring patterns and a cross-shaped pattern, and the four ends of the cross-shaped pattern are connected with the four square ring patterns respectively; and the first band stop layer comprises second metal patch patterns which are periodically arranged. The novel low-pass layer / band-stop layer pattern multilayer structure is constructed, the effects of ultra-wideband low-frequency wave transmission and high-frequency reflection are achieved under the condition that the thickness is sacrificed, the problem that in-band ultra-wideband wave transmission and out-of-band ultra-wideband reflection are difficult to give consideration to in-band ultra-wideband wave transmission and out-of-band ultra-wideband reflection at the same time in existing frequency selection is effectively solved, and then normal work of a satellite antenna housing is guaranteed.

Determining alignment and clear line-of-sight (LOS) of a satellite antenna using sensor data from an LOS sensor of the satellite antenna. Described techniques include storing first sensor data captured by the LOS sensor at a first time, the first sensor data indicating a first LOS condition of the satellite antenna corresponding to the satellite antenna having a beam LOS with a satellite of the satellite communication system that is aligned and unobstructed. The techniques may include receiving second sensor data captured by the LOS sensor at a second time after the first time, the second sensor data indicating a second LOS condition of the satellite antenna. The techniques may include determining an LOS condition change for the satellite antenna between the first time and the second time based on a comparison of the second sensor data with the first sensor data.

The utility model discloses a radar rotation adjusting mechanism, which belongs to the technical field of satellite antennas and comprises an antenna body, a radar host and a support frame which are sequentially connected. The support frame is provided with an arc-shaped hole; the adjusting assembly comprises a bottom plate, a sliding piece, a lubricating piece and a locking piece. The sliding piece comprises an arc-shaped stop block, at least two sliding columns and bushings in one-to-one correspondence with the sliding columns. The sliding piece is limited in the arc-shaped hole and can slide in the arc-shaped hole, so that the radar host rotates around the supporting part and is used for adjusting the pitch angle of the antenna body; the supporting part is provided with an arc-shaped groove in sliding fit with the lubricating piece. And the bottom plate is provided with a locking hole matched with the locking piece, and the locking hole is used for fixing the sliding piece in the arc-shaped hole so as to lock the pitch angle of the antenna body. According to the radar rotation adjusting mechanism, the number of parts is small, adjustment is easy, operation is simple, when the rotation angle needs to be adjusted, the rotation angle can be adjusted only by lifting the locking piece, and after adjustment is completed, the locking piece is pressed down, and the rotation angle can be locked.

The invention provides a ground station satellite antenna design method and system, and relates to the technical field of antenna design. The method comprises the steps of obtaining a working frequency band of a ground station satellite; selecting a target satellite antenna based on the working frequency band; the diversity parameters of the target satellite antenna are optimized, and a satellite antenna array is designed according to the target satellite antenna after grading parameter optimization; determining the beam gain of the satellite antenna array; according to the beam gain, establishing a first target function about the antenna main beam gain, a second target function about the antenna interference beam gain and constraint conditions; under the constraint of the constraint condition, minimizing the first objective function and maximizing the second objective function as targets, and adopting a particle swarm optimization algorithm to determine the optimal configuration of the satellite antenna array; and performing antenna configuration on the satellite antenna array according to the optimal configuration. According to the invention, the transmission rate of antenna signals is obviously improved.

The invention provides an in-orbit antenna flatness measurement method and system based on a two-dimensional PSD, and the method comprises the steps: arranging the two-dimensional PSD and a surface scanning laser on a satellite antenna and a satellite body, and scanning the two-dimensional PSD through the surface scanning laser; supports with different heights are arranged according to the size of an included angle between a laser scanning line and a photosensitive surface; after the antenna displaces or deflects, the laser scanning track on the photosensitive surface is changed, at the moment, the output value of the PSD is collected, the offset or deflection of the single measuring point of the antenna is calculated, and the flatness of the single measuring point of the antenna is obtained; and calculating the overall flatness value of the antenna by combining the offset and the flatness value of the multiple measurement points, so as to realize real-time monitoring of the flatness of the on-orbit antenna. The measuring system is high in monitoring precision and dimensionality, and can measure the displacement of the antenna in the direction perpendicular to the surface, clockwise or anticlockwise deflection along a certain axis, compound displacement and the like.

Polyhedral antenna systems are described for improving satellite communication links. Using conventional planar satellite antennas, user terminals closer to the edge of coverage (EoC) of the antenna tend to experience appreciable scan loss relative to user terminals closer to the nadir. Polyhedral antenna systems described herein (e.g., pyramidal antennas) include planar sub-antennas pointing in both nadir and EoC directions, which manifests an improved aggregate antenna response relative to conventional antenna approaches. For example, in orbit, the boresight of at least one sub-antenna is pointing substantially in a nadir direction, and the boresight of at least another of the sub-antennas is pointing substantially in the EoC direction. Embodiments can use interference mitigation techniques to reduce interference between sub-antennas. Ground terminals can be assigned to whichever of the sub-antennas provides the ground terminal with the highest-gain satellite link.

An antenna system for tracking multiple satellites comprises an RF lens (homogeneous or multiple layer Luneburg) with numerous feeds placed around the lens in a tightly packed arrangement to maintain high cross-over points between beams and high circularity. High-quality circular polarization, consisting of low axial ratio and low cross polarization levels, is maintained using a novel dielectric slab to compensate for the slight mismatch in phase delay through the lens from the two canonical polarizations vertical and horizontal. A weighted combination of beams is used to keep the resultant beam peak fixed on a satellite with the ability to use this approach in a number of places simultaneously, and simultaneously using one or more of these methods at multiple frequency bands.

The present application relates to the technical field of electronics. Provided are an antenna control method, and a control module, a radio-frequency front-end module and a product. The method comprises: acquiring the current operating state of a satellite communication system; and if the current operating state is in an idle time slot, controlling a positioning antenna to be in a tuning state, and controlling a satellite antenna to be in a short-circuit state. By means of the method, the antenna efficiency of a positioning antenna cannot be affected by a satellite antenna during satellite communication, thereby ensuring the positioning precision during the satellite communication.

The invention provides an integrated antenna integrating Beidou, low-orbit and Tiantong satellite communication and high-precision navigation positioning. A low-orbit satellite microstrip antenna, a GNSS high-precision microstrip antenna, a Tiantong microstrip antenna and a Beidou short message microstrip antenna are sequentially stacked on the upper surface of a PCB in a conical mode. A shielding cover is arranged on the lower side of the PCB; antenna radiation patches of the low-orbit satellite microstrip antenna are arranged on the outer edges of the upper surface and the lower surface of the low-orbit satellite antenna substrate and are not covered by the GNSS high-precision microstrip antenna; circuits of the low-orbit satellite microstrip antenna and the sky-pass microstrip antenna are arranged on the upper surface of the PCB circuit substrate. And circuits of the GNSS high-precision microstrip antenna and the Beidou short message microstrip antenna are arranged on the lower surface of the PCB. According to the invention, the four-in-one combined design of the antenna, the low-orbit satellite antenna, the Beidou short message antenna and the high-precision navigation antenna is adopted, so that the problem of performance insufficiency when each antenna is used independently is solved, complementation among the antenna, the low-orbit satellite antenna, the Beidou short message antenna and the high-precision navigation antenna is realized, and the cost is reduced; the electromagnetic compatibility between the antennas is improved through frequency band and polarization isolation design, and the stability of a communication link is guaranteed through interference resistance of the peripheral low-orbit satellite antenna.

The utility model discloses an underwater wireless timing transmission device, and relates to the technical field of buoys, the underwater wireless timing transmission device comprises a floating platform, a controller and a release assembly arranged on the floating platform, the floating platform is downwards connected with a balancing weight through a mooring rope, a detection instrument is integrated on the floating platform, the floating platform is buried underwater through the balancing weight, and the output end of the release assembly is provided with a communication buoy. The device has the technical advantages that compared with current common water surface buoy monitoring, due to the fact that no obvious water marker exists, the safety of the device can be effectively improved, compared with underwater monitoring such as a subsurface buoy, the communication buoy can be released in a timed mode, and the safety of the device is improved. Underwater monitoring data are transmitted to a shore-based terminal in real time through satellite communication, so that the timeliness of the data is effectively improved; the buoyancy block of the communication buoy is made of buoyancy materials, the gravity center is located at the bottom, and attitude stability and satellite antenna orientation can be conveniently kept after water is discharged.

The invention provides a robust hybrid beam forming method for cooperative communication of multiple low-orbit satellites, which relates to the technical field of satellite communication and comprises the following steps of: S1, constructing a joint optimization problem for joint beam forming and user scheduling; s2, the minimum channel gain of all users is maximized, when the number of satellite antennas is larger than a preset threshold value, the step S3 is executed, and otherwise, the step S5 is executed; s3, constructing a minimum signal to interference plus noise ratio maximization problem, and solving to obtain an optimal all-digital precoding matrix; s4, based on the optimal all-digital precoding matrix, constructing a digital-analog hybrid precoding matrix design problem to obtain a digital-analog hybrid precoding matrix; and S5, constructing and solving an analog pre-coding matrix design problem based on maximization of the signal leakage and noise ratio to obtain an optimal analog pre-coding matrix, and then solving an optimal digital pre-coding matrix. According to the invention, the overall performance and the service quality of the multi-low-orbit satellite communication network can be obviously enhanced.

The utility model relates to a vehicle-mounted communication device with a satellite communication function and a vehicle. The vehicle-mounted communication device provided by the utility model comprises a microcontroller module and a satellite communication module, the microcontroller module is connected with the satellite communication module, and the satellite communication module is used for being connected to a satellite antenna; the satellite communication module receives and sends satellite signals through the satellite antenna, and communicates with the microcontroller module. According to the utility model, the vehicle-mounted satellite communication function can be integrated into the TBox, so that bidirectional satellite message and satellite call services are provided, and the vehicle-mounted satellite communication function is realized.