39results about How to "Suitable for realization" patented technology

The invention relates to a double-camera automatic coordination multi-target eagle eye observation system and an observation method thereof. The system comprises a hardware platform, a wide angle camera, a pan / tilt / zoom (PTZ) camera, a processor and a multi-channel video acquisition card. The observation method comprises the following steps of: calibrating two cameras to obtain an angle that a moving camera rotates and aligns with any position of the wide angle camera; detecting moving targets from the wide angel camera, and tracking and marking; selecting a target; controlling the PTZ camerato zoom and track if the target moves fast; amplifying the target if the target moves slowly; positioning interested characteristics; and secondarily amplifying and observing an interested region. The system has the advantages of low cost, simple implementation and the like, and can be widely applied to multi-target video tracking fields such as robots, intelligent transportation, video monitoring and the like.

The invention discloses a method for detecting a radar target under the multipath condition, and the method is characterized in that the method comprises the following steps: 1, determining the numberof antennas, and setting set-up heights; 2, calculating a test statistic; 3, calculating a detection threshold value; 4, judging whether there is a target or not. A plurality of antennas at differentheights are used for receiving signals, and the method achieves the judgment of whether there is the target or not through the maximum value of the power of the received signals of the antennas. There is no need of target distance and height prior information. The maximum value of the power of the received signals of the antennas is taken as the test statistic, so the method can avoid the attenuation effect caused by multipath scattering to target signals received by the radars, employs the enhancement effect of the multipath scattering for the target signals received by the radars, and can guarantee that the radars has the higher detection probability for the low altitude objects at various heights and distances. The method is small in number of steps, and is small in calculation burden.The modification of the software and hardware of a conventional radar system is smaller, and the method is easy to implement and is high in engineering applicability.

The invention discloses a decoding early termination method for low-density parity check codes. The method is characterized in that for a decoder utilizing belief propagation decoding algorithms, every time an iterative computation of side information which variable nodes transmit to check nodes is performed, firstly computed coding hard decision bits of every variable node is carried to the front of the most significant bit or the back of the least significant bit of the side information transmitted from the variable nodes to the check nodes which are connected with the variable nodes on bipartite graphs, accordingly combined information is formed and transmitted to the check nodes; and while information transmitted from the check nodes to the variable nodes is computed, every check node extracts the coding hard decision bits from the combined information transmitted from the variable nodes which are connected with the check nodes on the bipartite graphs and performs syndrome computation: if all syndromes are zero, the iterative decoding is terminated early. The decoding early termination method for the low-density parity check codes can guarantee the accuracy of decoding and simultaneously reduce the working time delay of the decoder as much as possible, thereby improving the working efficiency.

The invention discloses a pair of trousers having a knee protecting function and a making process of the trousers. The pair of trousers comprises an upper front sheet and a lower front sheet, whereinthe lower front sheet comprises a left lower front sheet and a right lower front sheet; the upper front sheet comprises a bottom edge dividing line, a left side stitch and a right side stitch; the bottom edge dividing line is composed of a left lower bottom edge dividing line and a right lower bottom edge dividing line; the left lower front sheet and the right lower front sheet comprise top edge dividing lines, inner dividing lines and outer side stitches; the top edge dividing lines of the left lower front sheet and the right lower front sheet are perpendicular to the corresponding inner dividing lines and the outer side stitches; the top edge dividing line of the left lower front sheet is connected to the left lower bottom edge dividing line of the upper front sheet in an overlapped mode; the top edge dividing line of the right lower front sheet is connected to the right lower bottom edge dividing line of the upper front sheet in an overlapped mode; the inner dividing line of the left lower front sheet is connected to the inner dividing line of the right lower front sheet in an overlapped mode; and an intersection point of the left lower bottom edge dividing line and the right lower bottom edge dividing line corresponds to the vertex of a knee of a human body. With the application of the trousers provided by the invention, effects of knee protecting and keeping knees warm canbe achieved; and the pair of trousers is convenient to take off and take on and is suitable for wearing outside.

The invention discloses a blind identification method of the circulation code grouping length. When the grouping length n of (n, k) circulation codes with the message length k is identified, firstly, the frame length of circulation codes is determined to be fl, in addition, a factor i is taken from [3, fl] to be used as the grouping length to be grouped, Ni code characters can be obtained after the circulation codes are grouped, then, the proportion of effective code characters in the obtained Ni code characters is judged and counted, and the effective code characters refer to the code characters meeting the judging rules, wherein the maximum i value of the proportion of the effective code characters is identified into the grouping length n. The identification method of the invention has the advantages of simple principle, wide application range and the like. No matter the codes are system codes or non-system codes, are binary codes or multilevel codes, the grouping length can be identified by the method only if the codes are circulation codes meeting the circulation features and the frame length is known. At the same time, the method has a simple identification flow process, is very suitable for hardware realization, and is suitable for engineering application.

A speech processing method with S parameter control and based on the characteristics of Chinese language for electronic cochlea includes such steps as pre-treating the speech signals and dividing theminto two channels by external unit, dividing one channel of speech signals into several frequency bands, extracting the envelopes of the signals in each frequency band, extracting the base frequencyof another channel of speech signals, coding, controlling the channel number by S parameter, transmitting to amplitude transmission channel for chosen frequency band, transmitting the information about base frequency and amplitude in the format of command frame to internal unit, receiving them by internal unit, generating electric stimulation pulses, applying them to relative electrode, and stimulating the relative acoustic nerve for restoring the auditognosis of patient.

The invention relates to a multibeam depth measuring sonar multi-subarray wave beam sharpening method. The method comprises the following steps: carrying out orthogonal transformation on original signals received by a transducer array to obtain needed parsing signals; by use of a subarray divider, carrying out subarray division on the obtained parsing signals to divide the signals into four subarrays overlapped in space and divide the subarrays into two sub wave beam groups; carrying out routine wave beam formation on each subarray, and respectively carrying out first-order sharpening wave beam formation on a sub wave beam group A formed by the first subarray and the fourth subarray and a sub wave beam group B formed by the second subarray and the third subarray; and taking output generated after sharpening wave beam formation of the sub wave beam group A and the sub wave beam group B as input of next-order sharpening wave beam formation, carrying out a second-order sharpening wave beam formation, and taking output after the second-order sharpening wave beam formation as sharpening multibeam output. According to the invention, a tunnel effect can be inhibited under the condition of a quite small computation amount.

The invention discloses a combined navigation receiver frequency false lock detection device and method. The frequency false lock detection device comprises an integration module, a carrier-to-noise ratio calculation module and a false lock detection module. The frequency false lock detection method comprises an integration step, a carrier-to-noise ratio calculation step and a false lock detection step. According to the invention, the comparison between a difference between broadband signal power and narrowband signal power and the noise floor power is utilized, so that the carrier-to-noise ratio calculation is avoided, the structure is simple and effective, and the invention is more suitable for hardware realization. The frequency false lock is detected by a difference between a broadband signal carrier-to-noise ratio and a narrowband signal carrier-to-noise ratio; independent operation from a tracking loop is achieved; and the tracking loop cannot be influenced and influences of parameters of the tracking loop are also prevented.

The method includes steps: according to certain condition, selecting a piece of surface from a 3D object; unbending and scaling the said piece of surface, and selecting the piece with less diversity factor between new and old textures to cover sample drawing; finally, carrying out segmenting operation for repeated area by using segmentation technique to make textures between new pasted piece and original piece be combined in most fit. Features are: simple algorithm, quick speed and easy of implementation.