30 results about "Probable error" patented technology

A method of detecting fraudulent or erroneous data from a transaction data set is provided. A first transaction record having a plurality of key values is selected from a transaction record database. One of the key values is selected from the selected transaction record. The transaction record database is then queried for transaction records having the selected key value. A second database is compiled of transaction records that contain the selected key value. At least one other key value is then selected from the originally selected transaction record, and the transaction record database is again queried for transaction records also having the second key value. The results of the fist, second and any subsequent queries are added to a second or a suspect transaction database. Then, using the uncovered records, the transaction database is queried for the use of key values common to the uncovered set of transactions to see if additional records are suspect. A list of queried key values is maintained to prevent the unnecessary or redundant use of the same query of the transactions. Risk coefficients of levels of fraud or mistake are assigned to the transaction records which have one or more common key values to the records uncovered as a consequence of the database queries.

The present invention relates to a digital hearing aid, which models the structures of external ear canals, sizes and shape characteristics of which differ between respective persons, obtains resonance gains generated due to the structural characteristics of the external ear canals, and performs digitization and signal processing to allow the resonance gains to be used as the gain factors of the digital hearing aid, and thus applies the gain factors to digital signal processing units. Further, the present invention proposes a gain obtainment unit capable of taking both resonance gains, generated due to the structural characteristics, and gains, obtained through a hearing test, into account, thus reducing the time required for gain fitting and possible errors, and optimizing the performance of the digital hearing aid for each individual.

The invention discloses a liquid pipe resistance detection device which is used for evaluating the drag reduction effect of drag reduction agent. The detection device comprises a set of liquid circulation units and a detection unit; the liquid circulation unit is provided with a liquid storage tank and a circulation pipeline which is formed by a plurality of connecting pipelines and ball valves; the circulation pipeline is provided with a flexible pump and a transducer; furthermore, two ends of a measurement pipe section are respectively provided with a micro-difference pressure meter; the detection unit is electrically connected with the transducer and the micro-difference pressure meter. The liquid pipe resistance detection device adopts the flexible pump which has lower shearing strength than that of a centrifugal pump used in the prior art and is more suitable for evaluating the drag reduction effect; the liquid pipe resistance detection device uses the transducer to control the displacement of the pump, and measures the difference pressure only to simplify the detection device and the operation step, to reduce the measurement links and possible errors and to improve the reliability of results.

A system for controlling and monitoring a position of a holding element, which is provided to hold a sample to be examined, is disclosed. The system may use a beam device, such as an electron microscope. The system provides for controlling and monitoring a position of a holding element taking into account any errors with respect to irregularities and may include interpolation of possible errors.

The invention discloses a large-angle oblique imaging aero-camera targeted target positioning method. In accordance with the problems that the shooting distance of a large-angle oblique imaging aero-camera is long, and the operating distance of laser distance measuring equipment is limited, and the invention provides a direct targeted target positioning algorithm which is independent of the distance measuring equipment. According to the position and the attitude information of a carrying aerial vehicle, measured by the carrying aerial vehicle POS ( position and orientation system) and frame angular position information measured by a position encoder in the aero-camera; a homogeneous coordinate conversion method is used for solving the direction of a target under a geodetic coordinate system; and an earth ellipsoid model and a digital elevation model are used for determining latitude and longitude information of the target point. According to the large-angle oblique imaging aero-camera targeted target positioning method disclosed by the invention, flight test data is used for verifying the validity of the target positioning algorithm; and when the flight height is 18000m, and the rolling angle of a shooting frame is smaller than 63 degrees, the target positioning circular probable error is smaller than 70m, so that engineering actual requirements can be met.

The invention discloses an intelligent cell phone ranging method based on an android platform. The ranging method comprises the following steps: photographing a measurement point by a camera of a cell phone, calculating the horizontal distance between a measurement object and the measurement point, the distance between any two points in the same plane, the distance between the object and the ground and the distance between any two points in the vertical surface by a program according to the roll value and the pitch value of a directional sensor of the cell phone; correcting possible errors of the measurement value during calculation, wherein the measurement error is within 1% generally. The android platform provided by the invention can be installed in the cell phone as an application, and the ranging method is simple to operate, convenient to use, practical in function, accurate in ranging, and wide in application area.

An arrangement and method is provided for determining the present condition and / or expected life of electric power lines via the measurement and analysis of the current into and the current out of the electric power line, thus permitting preventive action on electric power lines before problems arise. In this way, any departure from normal operation may also be detected, e.g. such as caused by a high-impedance fault or the like. The phase angle difference between the input and output currents provides a measure of the condition of the line, i.e. specifically, this phase angle shift between the input and output currents increases as the line ages and loss factors increase. Due to the inherent noise in the current signals, in one embodiment the phase angle shift is measured via a cross-correlation between the input and output current signals to provide the measured phase angle. This phase angle is compared to that of acceptable lines and a determination is then made as to the condition or quality of the measured line. Where the signals are extremely noisy, an auto-correlation process is carried out on one of the current signals to provide an error factor that is a measure of the possible error in the cross-correlation process. This error factor is then subtracted from the phase shift as measured in the correlation process to provide a more realistic estimate of the phase angle shift between the input and output currents.

A method for the detection of a target by a radar in the presence of noise, the detection being performed on M antenna rotations, comprises at least: a first step for the estimation of the Doppler frequency ({circumflex over (f)}) of the target; a detection step, the target being detected if an associated variable Z is greater than or equal to a predetermined threshold S, the variable Z being defined according to the following relationship:Dt being the time domain [-t0, t0], t0 being fixed as a function of the possible errors of framing of the signals from rotation to rotation; D being the frequency domain └{circumflex over (f)}d-f0, {circumflex over (f)}d+f0┘, f0 fixed as a function of the possible errors of estimation of the Doppler frequency; z being the signal at the analyzed antenna rotation referenced "0", at the analyzed range gate references "0"; zik being the signal obtained by tracking at the rotation i of the signal z, in taking account of the tracking error in any, i.e., offset by k range gates with respect to the estimated range gate; Cz,zfk (t,f,G)being the Cohen transform of the signals z and zik with a kernel G, computed at the time t and the frequency f; Czik,zjl(t,f,G) being the Cohen transform of the signals zik and zjl of the kernel G, computed at the time t and at the frequency f; 2Nd+1 being the number of range gates taken into account, according to the tracking error if any; N(i, k, j, 1) being a standardization.

The present invention relates to a method for measuring interference power in a time slot CDMA system, especially for applications of downlink receiving devices in a time slot CDMA system. The method includes: performing channel estimation for received signals with channel estimation codes, to obtain the original channel response estimation results hi, i=1 . . . P; predetermining a threshold of number of taps W1, and selecting the channel response estimation results for W1 taps with less power from the original channel response estimation results hi for W1 as the roughly estimated result of the interference power; performing threshold processing on the original channel response estimation results by post-processing against signal-to-noise ratio threshold, by using the roughly estimated result of the interference power and the predetermined signal-to-noise ratio threshold, before processing compensating the possible error generated from rough estimation of the interference power and performing threshold processing with the compensated power threshold, so as to ultimately obtain an accurate measured result of the interference power. The method can be used to reliably measure the interference power in time slot CDMA mobile communication systems when the information of idle channel estimation windows is unavailable.

Reproduction signals include patterns for which recognition errors are likely. With respect to such patterns, probable error patterns are prepared. Tables showing correct patterns and error patterns are prepared, and evaluation values accurately representing signal quality are calculated. In an apparatus using a PRML method, discrimination data and a plurality of predetermined bit sequence pairs are examined to detect matching. A bit sequence and corresponding two ideal responses are calculated. Euclidean distances between the two ideal responses and equalization signals are obtained, and the difference between the Euclidean distances is further obtained. A quality evaluation value of a reproduction signal is calculated based on a mean value, a standard deviation, an appearance probability of the predetermined bit sequence, and a Hamming distance between the predetermined bit sequence pairs.

The invention relates to the field of mechanical processing, in particular to an online measurement and compensation method of position error of an inner wall surface of a deep pipe. A non-contact online intelligent detection system of the online measurement and compensation method of position error of an inner wall surface of a deep pipe comprises a deep pipe, an industrial control computer, a support, a panel, a cutter bar, a triangular displacement sensor, a boring cutter, a seal cover, a first bar core, a first displacement sensor, a reflector and a second bar core, wherein the deep pipe,the industrial control computer, the support, the panel, the cutter bar, the triangular displacement sensor, the boring cutter, the seal cover, the first bar core, the first displacement sensor, the reflector and the second bar core are arranged on a center frame and a chuck; the cutter bar is arranged in the deep pipe; the boring cutter is arranged at the front end of the cutter bar; the seal cover is arranged at the top end of the cutter bar; and the panel is arranged at the tail end of the cutter bar. The online measurement and compensation method of position error of an inner wall surfaceof a deep pipe makes a difference between final regulation and control parameters and initial processing parameters, solves the relative error, and provides a possible error range for the subsequent processing parameter selection, so as to enable an operator not to strictly adhere to the position error prediction map and consider the efficiency in the error range during the initial processing period, and greatly expanding the flexibility and adaptability of the method.

The invention belongs to the field of sports equipment and particularly relates to a single-component moisture-curable polyurethane plastic track material. The single-component moisture-curable polyurethane plastic track material aims at solving the problems that a traditional double-component polyurethane plastic track material is usually prepared when used, the retention time cannot be too long, meanwhile, much time and labor can be wasted for mixing, metering and matching, raw material waste is caused by probable errors, and therefore the construction cost of a track is increased. The single-component moisture-curable polyurethane plastic track material is prepared from, by mass, 15-30 parts of methylene diphenyl diisocyanate, 1-3 parts of 4, 4'-dicyclohexyl methane diisocyanate, 15-25 parts of polyether polyol, 5-10 parts of hydroxyethyl dodecyl alcohol, 2-4 parts of benzoic acid dibutyl ester, 1-3 parts of dibutyltin dilaurate, 1-2.5 parts of caprolactam, 0.8-1.6 parts of triethanolamine oleate, 1.5-2.8 parts of polyethylene wax, 0.5-1.6 parts of dilauryl thiodipropionate, 1.5-4.5 parts of trimethylolpropane, 10-20 parts of ethyl acetate, 2-4 parts of amino silicon oil, 1-4 parts of filler, 0.5-2.5 parts of antiager and 1.5-3.0 parts of accelerant.

Reproduction signals include patterns for which recognition errors are likely. With respect to such patterns, probable error patterns are prepared. Tables showing correct patterns and error patterns are prepared, and evaluation values accurately representing signal quality are calculated. In an apparatus using a PRML method, discrimination data and a plurality of predetermined bit sequence pairs are examined to detect matching. A bit sequence and corresponding two ideal responses are calculated. Euclidean distances between the two ideal responses and equalization signals are obtained, and the difference between the Euclidean distances is further obtained. A quality evaluation value of a reproduction signal is calculated based on a mean value, a standard deviation, an appearance probability of the predetermined bit sequence, and a Hamming distance between the predetermined bit sequence pairs.

A method of operation of a navigation system with predictive multi-routing includes: calculating a primary route; predicting a probable deviation location on the primary route; calculating a non-primary route for the probable deviation location; and sending the primary route, the non-primary route, or a combination thereof for displaying on a device.

The invention belongs to the technical field of testing. A mathematic derivation method is adopted; a titration end point is accurately judged by utilizing pH (Potential of Hydrogen) value jump nearby the titration end point, probable errors are reduced and the testing accuracy is improved. A method for determining the content of boron in boride, provided by the invention, comprises the following steps of pre-treating a sample, titrating and processing data, wherein NaOH with the concentration of 0.01mol / L to 0.2mol / L as a titration solution; a pH value is collected by utilizing a pH meter and the collection interval is 10s to 50s; a titration curve takes a titration volume as a transverse coordinate and the pH value and a derivative thereof as a longitudinal coordinate; the maximum point of the derivative is used as the titration end point; the corresponding volume of the consumed NaOH solution is used as the volume of the titration end point; the contents of boron oxide, free boron and total boron are calculated respectively. The method provided by the invention can be used for eliminating judgment on the titration end point by artificial subjective factors and a testing result is accurate and reliable. The method is applicable to determination of the contents of the boron oxide, the free boron and the total boron in the boride.

A detector circuit is to be used for measuring current by means of substantially identically wound ring core transformers, in which magnetomotive forces are induced by a main current. The magnetomotive forces are counteracted by magnetomotive forces induced by a compensating current. Two of the ring core transformers (2, 3) are magnetized in antiphase by means of a modulation signal. The detector circuit includes optionally a synchronous rectifier for providing an adjusting signal for the compensating current. According to the invention means are provided for compensating for possible differences between the two ring core transformers for the modulation signal. These means include a cornmon winding surrounding the two ring cores (2, 3), said common winding detecting a possible error signal used in a negative feedback loop which automatically seeks to establish an equilibrium.

The invention discloses a novel intelligent stereo garage which is composed of a control cabinet, a front stand column, a rear stand column, an operator, a vehicle carrying platform, a parking limiting stopper and a protective guard. According to the novel intelligent stereo garage, anterior-posterior balance and lateral balance of the vehicle carrying platform are guaranteed by means of the arrangement of a balancing chain and a balancing shaft, probable errors caused by manual operation are avoided due to the arrangement of the parking limiting stopper and a switch for detecting whether vehicles exist on the lower layer, and safety of the garage and vehicles is guaranteed. The stereo garage guarantees vehicle parking, saves space and brings great economic benefits and social benefits.

The invention relates to a GMM and EM algorithm-based non-Gaussian distribution CEP estimation method, belongs to the field of equipment performance testing and statistic signal processing, and aims to solve the problem of CEP estimation when observation data obeys non-Gaussian distribution. The method comprises the steps of firstly performing modeling and representation on any non-Gaussian distribution by using GMM; secondly based on a maximum likelihood thought, solving model parameters by using an EM algorithm; and finally for an obtained Gaussian mixture model, calculating out a circular probable error value by using a bisection method. When the observation data obeys the non-Gaussian distribution, the CEP estimation precision is remarkably superior to that of a conventional method.

The invention provides a method calling a mobile phone to make a call. The method comprises the steps that 1) a calling device sends a call-making instruction to a mobile phone A, wherein the call-making instruction comprises contact information; and 2) the mobile phone A receives the call-making instruction and makes the call according to the contact information. The invention also provides a corresponding system. According to the invention, the call-making instruction can be sent from a computer to the mobile phone, thereby avoiding inconvenience and probable errors due to manual telephone number input; via a browser, a user can directly click the telephone number in a webpage when surfing the Internet, and sends the telephone number to the mobile phone via a browser plug-in, which is convenient and rapid; direct transmission of the telephone number between the computer and the mobile phone can be realized in short-distance wireless communication manner via Bluetooth and the like; the telephone number can be sent to the mobile phone remotely via a server; and the calling device can distinguish the mobile phone A from a mobile phone B, so that the telephone number can also transmitted between different mobile phones.

The present invention relates to a digital hearing aid, which models the structures of external ear canals, sizes and shape characteristics of which differ between respective persons, obtains resonance gains generated due to the structural characteristics of the external ear canals, and performs digitization and signal processing to allow the resonance gains to be used as the gain factors of the digital hearing aid, and thus applies the gain factors to digital signal processing units. Further, the present invention proposes a gain obtainment unit capable of taking both resonance gains, generated due to the structural characteristics, and gains, obtained through a hearing test, into account, thus reducing the time required for gain fitting and possible errors, and optimizing the performance of the digital hearing aid for each individual.

The invention provides an asymmetric-station-distribution multivariate-differential time difference positioning error analyzing method. A main station serves as an observation original point, thus allauxiliary stations are symmetrically distributed on the two sides of the main station, the angular bisector of an included angle of the three stations serves as the Y axis, a Cartesian coordinate system is established, and the relative position between a positioning target and the main station is obtained under the coordinate system; and under a model, the arrival time and station location distribution are subjected to multivariate-differential, a positioning circular probable error mathematical expression is deduced, and positioning circular probable error mathematical expressions at different detection distances are further calculated. The mathematical model is established to quantitatively analyze the influences of the factors on the positioning error, the mathematical expressions of the positioning error circular probable density under asymmetric station distribution are deduced, and the engineering practical value is achieved.

The invention relates to the field of mechanical processing, in particular to an online measurement and compensation method of position error of an inner wall surface of a deep pipe. A non-contact online intelligent detection system of the online measurement and compensation method of position error of an inner wall surface of a deep pipe comprises a deep pipe, an industrial control computer, a support, a panel, a cutter bar, a triangular displacement sensor, a boring cutter, a seal cover, a first bar core, a first displacement sensor, a reflector and a second bar core, wherein the deep pipe,the industrial control computer, the support, the panel, the cutter bar, the triangular displacement sensor, the boring cutter, the seal cover, the first bar core, the first displacement sensor, the reflector and the second bar core are arranged on a center frame and a chuck; the cutter bar is arranged in the deep pipe; the boring cutter is arranged at the front end of the cutter bar; the seal cover is arranged at the top end of the cutter bar; and the panel is arranged at the tail end of the cutter bar. The online measurement and compensation method of position error of an inner wall surfaceof a deep pipe makes a difference between final regulation and control parameters and initial processing parameters, solves the relative error, and provides a possible error range for the subsequent processing parameter selection, so as to enable an operator not to strictly adhere to the position error prediction map and consider the efficiency in the error range during the initial processing period, and greatly expanding the flexibility and adaptability of the method.

The invention discloses an intelligent cell phone ranging method based on an android platform. The ranging method comprises the following steps: photographing a measurement point by a camera of a cell phone, calculating the horizontal distance between a measurement object and the measurement point, the distance between any two points in the same plane, the distance between the object and the ground and the distance between any two points in the vertical surface by a program according to the roll value and the pitch value of a directional sensor of the cell phone; correcting possible errors of the measurement value during calculation, wherein the measurement error is within 1% generally. The android platform provided by the invention can be installed in the cell phone as an application, and the ranging method is simple to operate, convenient to use, practical in function, accurate in ranging, and wide in application area.

Reproduction signals include patterns for which recognition errors are likely. With respect to such patterns, probable error patterns are prepared. Tables showing correct patterns and error patterns are prepared, and evaluation values accurately representing signal quality are calculated. In an apparatus using a PRML method, discrimination data and a plurality of predetermined bit sequence pairs are examined to detect matching. A bit sequence and corresponding two ideal responses are calculated. Euclidean distances between the two ideal responses and equalization signals are obtained, and the difference between the Euclidean distances is further obtained. A quality evaluation value of a reproduction signal is calculated based on a mean value, a standard deviation, an appearance probability of the predetermined bit sequence, and a Hamming distance between the predetermined bit sequence pairs.

The invention provides a passive target positioning method based on channel capacity. The passive target positioning method includes steps of observing a target T by various alternative observation stations, obtaining observation angles based reference directions of the alternative observation stations as reference lines, transmitting results to a control center of a direction-finding cross-bearing positioning system, combining relative position relation of the observation stations, optionally selecting two observation stations A and B to form a triangular positioning system with the target T, calculating an observation angle with a connecting line of the two observation stations as a reference line, calculating channel capacity C of the system, comparing system channel capacities of various triangular positioning systems, and positioning the target T by means of selecting the triangular positioning system with the highest system channel capacity. Measurement errors of each observation stations are taken into consideration, shortcomings of a minimum positioning fuzzy region area method and a minimum circular probable error method when the minimum positioning fuzzy region area method and the minimum circular probable error method are applied to the direction-finding cross-bearing positioning system are avoided, influence of high difference of the measurement errors of the observation stations to positioning precision is reduced, and the observation angles the observation stations can be quickly set according to the channel capacities.

The invention belongs to the technical field of aerial inertial navigation devices, and relates to a calibration reminding method of an aerial inertial navigation device. The inertial navigation device samples satellite positioning data in a timing mode and compares the satellite positioning data with the position solved by an inertial channel formed in the inertial navigation device, the task radial error rate of a single navigation task is counted according to the radial error rates of all moments, and in case of the radial error rates of accumulated over eight tasks, accumulated circular probable errors are counted; when the task radial error rate or the accumulated circular probable errors exceed a specified value, a data bus transmits a calibration prompt to a display system for displaying. The problem that inertial navigation device navigation precision inspection needs to be completed by professional technical personnel through a professional external detection device is solved. The maintenance cost can be effectively controlled, the maintenance cycle can be shortened, and the requirements on the professional skill level of maintenance personnel can be lowered.