32 results about "Standard array" patented technology

The present invention extends the concept of a standard array waveguide grating (AWG), which focuses each wavelength component launched via an input AWG to a Rowland circle inside a planar lightwave chip (PLC) where discrete waveguides are located, to one which focuses each wavelength component outside of the PLC chip along a straight line. An array of MEMS mirrors or other redirecting elements is positioned at the focus location for independently redirecting each of the wavelength channels back to any number of selected output AWGs formed on the same PLC chip as the input AWG.

A heat exchanger including a stacking block, including: a first plate surface; a second plate surface opposite to the first plate surface; and first and second flow path plates including respective plural first and second through holes that have a standard shape. The first through holes are arranged to line up in a standard array pattern in a first direction in which a first flow path causes a first fluid to flow. The second through holes are arranged in the first direction in the same standard array pattern as the first through holes. Each of the first through holes have an area with a same overlap with the second through holes positioned on both sides of the first through holes, in the first direction. The first flow path is formed by the first and second through holes being mutually joined in the first direction, in the areas of overlap.

A wired and wireless communication method and apparatus for reducing a PAPR Peak to Average Power Ratio in an OFDM Orthogonal Frequency Division Multiplexing system. A transmitter of the OFDM system designates, as a coset leader, a vector capable of minimizing a PAPR in a general standard array of n, k linear block codes and transmits a sequence having a minimum PAPR by adding each coset leader to an n-bit codeword corresponding to k-bit information and producing U<=2n-k number of vectors. Then, a receiver of the OFDM system can easily recover an original transmission signal using a syndrome of a received vector if the receiver identifies information of the syndrome and the coset leader.

A method for magnetic character recognition may include preparing standard array data of peak intervals; generating a regeneration waveform out of a character string of magnetic characters printed on a surface of an information data recording medium; segmenting a character waveform of each magnetic character out of the regeneration waveform; generating array data of peak intervals out of an array pattern of a plurality of intervals between peaks that are included in the character waveform; and comparing the array data of peak intervals with the standard array data of peak intervals; wherein, based on a comparison result of comparing the array data of peak intervals with the standard array data of peak intervals, a read character is identified with a character corresponding to an array data of peak intervals that shows the highest coincidence.

The invention discloses a porous expanded connection device for expanded connection of multiple heat exchange pipes. The porous expanded connection device comprises an expanded connection unit comprising multiple expansion heads, and a power device for driving the expanded connection unit to expand the heat exchange pipes. The porous mode can be interpreted as one row of holes at a time, multiple rows of holes at a time, one standard array unit at a time, multiple standard array units at a time, a single pipe plate surface at a time or two pipe plate surfaces at a time. When the porous expanded connection device is used, the expansion heads in the expanded connection unit are pushed into the heat exchange pipes by the power device, and the expanded connection work is carried out by the expansion heads, so that the heat exchange pipes are subjected to expanded connection at the same time. Therefore, the production efficiency is improved, the expanded connection quality is stabilized and the expanded points cannot be locally loosened.

The invention discloses an action teaching method, a terminal and a computer-readable storage medium. The action teaching method includes: acquiring a user picture, extracting user action data in each frame of the user picture, and sequentially displaying the extracted user action data. into the array to be tested; whenever the storage limit of the array to be tested is reached, the initial similarity between each array to be tested and the corresponding standard array is calculated to obtain the target similarity corresponding to each standard array; according to the target similarity corresponding to each standard array, Get the total learning score. Through the present invention, the target similarity corresponding to each standard array is obtained, which is equivalent to obtaining the user's learning situation of the standard action corresponding to each standard array, so as to obtain the total learning score. On the one hand, the user can better understand his own learning situation , Improve learning efficiency, on the other hand, reduce economic cost and time cost.

The invention discloses a method and a system for measuring wind speeds and wind directions. The method includes acquiring the wind speed range and the wind direction range of a to-be-measured wind; establishing an arc-shaped one-transmission four-reception array structure formed by a transmitting array element for transmitting signals and four receiving array elements for receiving the signals, and by taking one of the receiving array elements as a standard array element, acquiring a time delay calculation expression, in which the signals transmitted by the transmitting array element reachingthe receiving array elements is relative to the signals transmitted by the transmitting array element reaching the reference array element; according to the time delay calculation expression and thewind speed range and the wind direction range of the to-be-measured wind, by a beam forming algorithm, calculating the maximum value of output power of a beam former and determining the wind speed andthe wind direction corresponding to the maximum value as the wind speed and the wind direction of the wind. The method and the system have the advantages that the wind directions and the wind speedsare determined according to the time delay, in which the signals reaching the receiving array elements is relative to the signals reaching the standard array standard, and the beam forming algorithm,so that the problem of wind information errors caused by errors of measurement based on a time difference method is avoided, and measurement accuracy and measurement speed are improved.

The invention relates to a method for estimating array amplitude and phase errors based on a sparse reconstruction algorithm, which includes: obtaining space-time data received by an antenna array; first constructing a standard array flow pattern dictionary matrix, and then initializing the additive amplitude and phase error to obtain The dictionary matrix of amplitude and phase errors; use the sparse formula to iteratively calculate the amplitude and phase errors and clutter spectrum, and then use the least squares to correct the dictionary matrix with amplitude and phase errors, and then perform cyclic iteration estimation to achieve two adjacent clutter spectrum estimation errors Stop when the desired condition is met. The array amplitude and phase error estimation method based on the sparse reconstruction algorithm of the present invention double estimates the amplitude and phase error of the array based on the multiplicative and additive amplitude and phase error representation method, and continuously updates the amplitude and phase error in the sparse iteration process, so that the The estimated value of the clutter spectrum is more accurate, and the calculation amount of the array amplitude and phase error estimation method of the present invention is greatly reduced.

The invention discloses a data error detection method and system, wherein the execution steps of the method are: according to the received classification information request, obtain the first data block group corresponding to the classification information request; obtain each data block group in the first data block group The array length of the data tag corresponding to the block; the array length of the data tag corresponding to each data block in the first data block group is compared with the pre-stored standard array length, and the array length in the first data block group and the standard data are discarded The data blocks whose lengths do not match are obtained to obtain the second data block group; the second data block group is parsed to obtain the first classification information corresponding to each data block in the second data block group; each data block in the second data block group is Comparing the corresponding first classification information with the second classification information corresponding to the classification information request; discarding data blocks in the second data block group whose first classification information does not match the second classification information, to obtain a third data block group. The above method and system can effectively discard data with errors and improve the efficiency of network data transmission.