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64 results about "Pilot training" patented technology

Three dimensional virtual simulation system and simulation method for shipboard aircraft pilot training injury assessment

The invention discloses a three dimensional virtual simulation system and simulation method for shipboard aircraft pilot training injury assessment. The three dimensional virtual simulation system comprises a hardware platform, a bottom layer support model base, a data management module, a bio-mechanical simulation module, a three dimensional virtual scene view module and a post processing module. The three dimensional virtual simulation method comprises: the data management module receives the data and configuration parameters input by a user, and transmits configuration parameter management to the bio-mechanical simulation module and the three dimensional virtual scene view module; the obtained bio-mechanical simulation data is transmitted to the post processing module and the three dimensional virtual scene view module respectively; three dimensional virtual scene view simulation is carried out and the result is stored; and by means of comprehensive comparison between the three dimensional virtual scene view simulation data and the bio-mechanical simulation data, the training injury assessment result for pilots are displayed and analyzed to the user. The three dimensional virtual simulation system and simulation method for shipboard aircraft pilot training injury assessment solve the defects of nonrepeatability and high risk of a traditional experimental study, and have the advantages of being high in efficiency, having repeatability and being low in cost.
Owner:PLA NAVY GENERAL HOSIPTAL +2

Pilot training control method based on pilot comprehensive capability evaluation

The invention relates to a pilot training control method based on pilot comprehensive capability evaluation, and belongs to the field of flight safety. The method comprises the following steps: firstly, determining a pilot comprehensive capability evaluation index, constructing an evaluation index hierarchical structure model, and forming an evaluation index system consisting of a target layer, acriterion layer and an index layer; then, according to the relative importance degree of the evaluation indexes, pairwise comparing and judging the evaluation indexes of the same layer, and establishing a relative importance judgment matrix; carrying out consistency inspection on the judgment matrix; calculating the weight of each evaluation index; and finally, carrying out standardized processingon the measurement parameters of each evaluation index, evaluating the comprehensive capability of the pilot by adopting a weighted statistical method, and finally obtaining a weak link of the pilotaccording to an evaluation result and establishing a training scheme. Compared with the prior art, the method can comprehensively and systematically represent various factors influencing pilot comprehensive capability evaluation and the mutual relation among the factors, and is wide in application range and accurate in evaluation.
Owner:SHANGHAI UNIV OF ENG SCI

Frequency domain arrival detection method of orthogonal frequency division multiplexing system

The invention discloses a frequency domain arrival detection method of an orthogonal frequency division multiplexing system. A frequency domain synchronous transmitting unit adopts two frequency domain pseudorandom sequences with identical length but different phases, a zero is respectively compensated to each pseudorandom sequence to obtain a pseudorandom expanded sequence, then rapid Fourier inverse transformation operation is carried out on the pseudorandom expanded sequences to obtain time domain sequences, and then the two time domain sequences are cascaded to obtain a synchronous pilot training sequence. A frequency domain synchronous receiving unit adopts a time window with a length being identical to that of one pseudorandom expanded sequence, rapid Fourier transformation operation is carried out on data inside the window, then the data is correlated with a known local pseudorandom expanded sequence after being subjected to peak clipping and amplitude limitation processing, and the signal arrival is judged by utilizing excellent autocorrelation property of the pseudorandom sequence and simultaneously considering a threshold and position-based detection method. Due to the adoption of the frequency domain arrival detection method of the orthogonal frequency division multiplexing system, interference of a single tone, narrow band and the like can be effectively resisted, and reliable signal arrival detection can also be realized under a severe channel condition.
Owner:ZHEJIANG UNIV

Optimization method for iterative equalization of wireless wideband communication channel

The invention discloses an optimization method for iterative equalization of a wireless wideband communication channel. The method comprises the following steps of setting a pilot training sequence and a received pilot training sequence, carrying out initial channel estimation and respectively carrying out fast Fourier transform on an initial channel estimation value and the pilot training sequence obtained at a receiving end in order to obtain a frequency domain estimation value and a frequency domain response respectively; utilizing a zero-forcing algorithm to obtain an equalization pilot training sequence X'(N+i) after ith iteration and then computing to obtain a signal-to-noise ratio SNRi after ith iteration; utilizing an MMSE (Minimum Mean Square Error) algorithm to obtain an equalization filter coefficient W(N+i) after ith iteration and then computing to obtain an error function E(N+i) after ith iteration, and obtaining an equalization filter updating coefficient W'(N+i) after ith iteration accordingly; and utilizing the equalization filter updating coefficient W'(N+i) after ith iteration to replace the equalization filter coefficient W(N+i), repeating the process until an error function value meets design requirements, stopping iteration, and computing to obtain the equalization filter updating coefficient W'(N+i) after ith iteration as an optimal equalization filter coefficient.
Owner:西安烽火电子科技有限责任公司

Method and device for detecting pilot attack, electronic equipment and storage medium

Embodiments of the present invention provide a method and a device for detecting a pilot attack, electronic equipment and a storage medium. The method for detecting the pilot attack is applied to a legal user side and comprises the following steps of sending a first pilot signal to a transmitting end in an uplink stage of pilot training in order to make the transmitting end obtain each first peakvalue corresponding to a spatial spectrum function of each first pilot signal sent by each user side; receiving each first peak value sent by the transmitting end in a downlink stage of pilot trainingand each second pilot signal transmitted by the transmitting end and other user sides in order to obtain a spatial spectrum function of each second pilot signal about a scanning angle of the legal user side; obtaining each second peak value corresponding to the spatial spectrum function; and determining the first peak value corresponding to a minimum difference as a spatial spectrum of the legaluser side, determining the second peak value corresponding to the minimum difference as a spatial spectrum of the transmitting end, and determining the remaining peak values as the spatial spectrums of the malicious user sides respectively. According to the embodiments of the invention, a purpose of identifying the malicious user side is achieved.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Semi-physical water throwing and drawing fire extinguishing simulation evaluation system for amphibious fire extinguishing aircraft

The invention discloses a semi-physical water throwing and drawing fire extinguishing simulation evaluation system for an amphibious fire extinguishing aircraft. The system comprises a flight simulator, a fire extinguishing task scene construction module and fire extinguishing flight simulation software. The flight simulator is connected with the fire extinguishing flight simulation software and the fire extinguishing task scene construction module through a network, and the fire extinguishing task scene construction module is directly connected with the flight simulator. And the flight simulator transmits the operation quantity into fire extinguishing flight simulation software, and the fire extinguishing flight simulation software obtains flight data through calculation. And the fire extinguishing task scene construction module calculates the flight data, generates picture information, and collects fire extinguishing effect related data for fire extinguishing effect evaluation by fire extinguishing flight simulation software. The flight simulator capable of simulating fire extinguishing flight simulation can accurately simulate the whole flight process of an amphibious fire extinguishing aircraft and show the fire extinguishing process. A fire extinguishing simulation evaluation system is constructed, the fire extinguishing effect of the pilot can be evaluated, and the systemhas wide application prospects in the aspects of pilot training and the like.
Owner:BEIHANG UNIV +1

Closed three-dimensional vestibule training device

PendingCN109938961AClose to the actual requirements of the workFit vestibular toleranceChiropractic devicesPhysical educationEngineering
The invention relates to a closed three-dimensional vestibule training device which comprises a support, an outer side ring, a middle ring and an inner side ring. In the initial state, three rotatingrings are in the state of sharing the same circle center and the same plane. The support and the outer side ring are connected through a rotating pair, the outer side ring and the middle ring are connected through a rotating pair, and the middle ring and the inner side ring are connected through a rotating pair, and the angle formed between the rotating axis of the inner side ring inside the middle ring and the rotating axis of the middle ring inside the outer side ring is 90 degrees. The angle formed between the rotating axis of the middle ring inside the outer side ring and the rotating axisof the outer side ring inside the support is 45 degrees. The diameters of the outer side ring, the middle ring and the inner side ring are sequentially reduced, and a safety device is arranged on theinner side ring. Due to multi-dimensional rotation, the high speed, complex steering, G increase and decrease and other flight transportation actual environment can be simulated, and training betterfits the actual working requirement, and better fits vestibule resistance and adaptability needed by the complex environment. The closed vestibule training device is wide in application range, can beapplied to the civil aviation flight major and flight attendant, air marshal and air duty majors directly related to flight transportation, and can be applied to military aviation pilot training, navigation shipping and other major training. The device can be applied to physical education, physical exercise, physical ability training practice, physical ability testing and experiments and other working in various majors.
Owner:CIVIL AVIATION UNIV OF CHINA +1

Flight training quality and efficiency evaluation method fusing physiological data and flight parameter data

A flight training quality and efficiency evaluation method fusing physiological data and flight parameter data comprises the following steps: firstly, collecting physiological data and psychological state data in a flight process of a pilot, and then constructing a psychological state prediction model by using the collected physiological data and psychological state data based on an SVM (Support Vector Machine) method; the psychological state of the pilot in the flight process is analyzed through the psychological state prediction model, and meanwhile, the flight parameter data in the flight process is combined to quantify the analysis result, so that comprehensive evaluation of the flight training quality and efficiency of the pilot is achieved. The psychological state prediction model is constructed based on the SVM method so as to analyze the physiological data of the pilot, the psychological state of the pilot is comprehensively and accurately analyzed, meanwhile, flight training is evaluated from multiple angles in combination with a flight parameter quantitative analysis result, scientific method support is provided for pilot training quality and efficiency evaluation, and the pilot training quality and efficiency evaluation efficiency is improved. The method provides support for rapid training and efficient flight training of pilots, and provides a basis for aviation colleges to optimize a scientific training scheme.
Owner:JIANGXI HONGDU AVIATION IND GRP
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