31 results about "Nonnormal data" patented technology

The invention relates to multilayer honey-net data transmission method and system, and the gateway of honey-net receives the data flow of external network; the gateway of honey-net detects the network intrusion for the received data flow; the normal data flow can pass, which is sent to the target host computer; and the informal data flow is divide into high, middle and low according to dangerous level; and the data flow with high level is sent to physical honey-tank system, the data flow with middle level is sent to virtual machine honey-tank system, and the data floe with low level is sent to virtual honey-tank system. The invention can utilize the advantages of low interactive honey-tank system and high interactive honey-tank system, save system source, and improve the covering area of honey-tank system and the ability of obtaining the movable information of network attack and capturing the malice code; it can defeat the anti-honey tank technique. And it can be used in security field of computer network.

The invention discloses a method for extracting data of BlueSky file system monitoring equipment rapidly. The method includes the steps of S1, loading disk data; S2, detecting whether the disk data meet requirements or not; S3, analyzing disk structure; S4, analyzing normal data records; S5, analyzing abnormal data records; S6, classifying and extracting video data; S7, recombining fragmented data. The method has the advantages that normal video, deleted video and fragmented video of a BlueSky file system can be extracted completely and rapidly, and the fragmented data can be recombined, thereby helping in data recovery of enterprises and case detection of the public security organization.

The invention discloses a method and system for vehicle acceleration early warning and / or emergency braking recording, which collects the X, Y, Z three-axis offset data of the vehicle, and uses dynamic Kalman filter according to the X, Y, Z three-axis offset data The algorithm converts the real X, Y, Z axis offset data; obtains the real X, Y axis offset data, and judges whether the real X, Y axis offset data is within the normal range of calibration; Abnormal data within the normal value range, emit a signal, and record abnormal data. The invention has the advantages of low cost, small size, high measurement precision, humanized design and the like.

The invention relates to a rapid navigation channel model modeling method for 3D printing. The method comprises steps that initial terrain data of the engineering river section including the terrain elevation is collected; a model making scope is determined; abnormal data of the initial terrain data is excluded; the model both-side flat top elevation is determined; the model both-side flat top elevation is utilized to replace the shore elevation; the model bottom elevation is determined; model boundary control point data is integrated; discrete processing is carried out; a navigation channel model is generated, the model is cut into a plurality of channel model blocks, and the model blocks are outputted and printed. The method is advantaged in that a digital model which can be identified by a 3D printer can be rapidly established for any complex river terrains, and the river terrain model can be guaranteed to have the relatively high similarity to the prototype.

The invention relates to a method and apparatus for identifying an asymmetric waveform in a strong earthquake record. The method comprises: carrying out base line initialization on acceleration data in an obtained strong earthquake record; classifying corrected acceleration data into a first array and a second array by using a base line as a benchmark; carrying out a preliminary symmetry analysis on the first array and the second array and determining whether a graph drawn by the acceleration data is a symmetrical waveform; and if so, carrying out a precise symmetry analysis on the first array and the second array and determining further whether the graph drawn by the acceleration data is a symmetrical waveform. According to the method and apparatus provided by the invention, advantages of two kinds of symmetric analysis methods are combined; and the identification efficiency can be guaranteed and the screening accuracy can be improved; abnormal data in a strong earthquake record can be rejected; and the earthquake analysis result reliability can be enhanced.

The present invention discloses a waveform signal adaptive counting method. The method includes the following steps that: frequency division processing is performed on waveform input signals, so thatthe high levels or low levels of obtained new signals are the entire period of the original signals; the high levels which are obtained after the frequency division processing is performed are countedthrough using clock signals; the difference value of counts is calculated; the absolute value of the difference value is compared with the threshold lambda of the difference value; normal data are output, and abnormal data are subjected to addition operation so that a normal value can be outputted; and a total count is finally obtained. According to the waveform signal adaptive counting method ofthe invention, the frequency division processing is performed on the waveform input signals; the high levels which are obtained after the frequency division processing is performed are counted through using the clock signals; the counts are grouped; whether the counts belong to normal data is judged according to different groups; desired data are outputted, namely, the adaptive counting result ofthe waveform signals is obtained; and therefore, the accuracy of signal period calculation is effectively improved.

The invention relates to a novel method for testing a directional diagram of a satellite antenna. The method is implemented by a satellite antenna test system. The test system comprises a test station, a tested station and a test satellite, wherein the test station comprises a test computer, a spectrometer and a test antenna; the tested station comprises a tested antenna and a signal generation module. According to the method, the spectrometer is used for acquiring data, and the test data is processed and counted in the test computer, so that late data processing can be realized; a test result is obtained by a statistical method; furthermore, during data analysis by the test computer, abnormal data in the test data can be removed, and the influence of an accidental mistake on the test result is avoided; by the method, a near sidelobe directional diagram and a near sidelobe depolarization directional diagram can be respectively tested; the polarization isolation degree can be obtained by statistics by the directional diagram, and the calculating precision of the polarization isolation degree can be improved.

The invention discloses a method for clearing data in an SQLite database. The method comprises the following steps that S1, a device comprising the SQLite database is connected to establish a connection channel with the device; S2, all SQLite files in a memory space of the device are scanned to obtain a storage path; S3, the scanned SQLite files are analyzed one by one, and abnormal data clearing is carried out. The method has the advantages that scanning is complete, all the SQLite files in the memory space can be found out, and all areas in the SQLite are scanned and marked; clearing is complete, abnormal data of master tables, data tables, index tables and free pages in the SQLite files are scanned and cleared, malicious steal of privacy data is prevented, and safety of privacy data is protected.