11 results about "Airborne collision avoidance system" patented technology

The invention relates to the technical field of testing and fault diagnosis, in particular to a testing and fault diagnosis method and device for a navigation management responder and an airborne collision avoidance system, and the method comprises the steps: constructing a fault case library and an expert knowledge library, and testing the navigation management responder and the airborne collision avoidance system, acquiring test results and characteristic parameters of the navigation management responder and the airborne collision avoidance system; if the test result does not meet the preset standard, matching the feature parameters with fault cases in an expert knowledge base through an inference engine, and outputting fault causes and processing suggestions according to requirements; according to the technical scheme, by integrating the automatic test system and the fault diagnosis reasoning system, various performance tests of the navigation management responder and the airborne collision avoidance system can be automatically executed, and the test efficiency and precision are remarkably improved.

The invention discloses an anti-collision system automatic tester based on radio frequency channel switching and a testing method thereof, an interface processing extension set is connected with tested equipment in a wireless communication mode and is used for receiving signals of the tested equipment, and the problems that in a traditional testing mode, the operation process is complex, and errors are prone to occurring are solved. The interface processing extension set is connected with the industrial control computer, the TCAS tester and the ATC / DME tester and is used for receiving radio signal data and realizing automatic processing and analysis of the data; measurement and control software is arranged in the industrial control computer and used for regulating and controlling the TCAS tester, the ATC / DME tester, the frequency spectrograph, the oscilloscope and the interface processing extension set according to signals of tested equipment and radio signal data, an automatic testing process is achieved, and therefore the problems that in a traditional testing mode, testing time is long, and efficiency is low are solved. The test efficiency of the TCAS airborne collision avoidance system UUT equipment is improved, the labor cost is reduced, and the flight safety is ensured.

The present invention belongs to the field of avionics technology, and in particular, relates to an architecture of an airborne collision avoidance system. It includes: the front-end processing module is used to process data from different data sources, and the different data sources include: the reply signal of the A / C device, the S-mode reply signal, and the ADS-B signal; the monitoring processing module is used to monitor and track targets from different data sources, and send the tracking results to the collision avoidance processing module; the collision avoidance processing module is used to perform collision avoidance processing according to the tracking results and generate warning suggestions; the monitoring processing module is used to monitor the data source of the aircraft itself, and can support the operation of multiple scenarios of the aircraft, can support the selection and fusion of multiple airborne data sources, and the decoupling of algorithms and devices, and support algorithms that can be applied to different aircraft or equipment platforms.

This invention relates to the fields of unmanned aerial vehicle (UAV) technology and air traffic safety management, and discloses a simplified airborne collision avoidance system. The system includes a processor, a memory, and a communication interface. When the processor executes a computer program, it implements a multi-source perception and fusion unit, a trust assessment unit, a cooperative mode management unit, and a graded avoidance decision-making unit. It achieves compatibility with existing unsigned broadcasts through graded verification, marking targets with different trust levels and adjusting risk assessment weights accordingly. It identifies authorized targets through authorized cooperative modes, dynamically lowering safety distances or alarm thresholds within the authorized range, and distinguishing between non-contact and contact cooperation. It generates cooperative or non-cooperative avoidance commands through multi-level progressive risk assessment. It supports parsing dynamic sweep area description information from rotating obstacle broadcasts and reconstructing time-varying collision envelopes. This invention is flexible in deployment and can be installed on various aircraft and ground obstacles, improving low-altitude airspace collision avoidance safety.

This invention discloses a network-based airborne collision avoidance system testing device, comprising a test system hub, a signal testing unit, a DC power supply assembly, an industrial control computer, a TCAS tester, and an ATC / DME tester. The test system hub is connected to an S-mode transponder, an ACAS main unit, an antenna switching switch, the TCAS tester, the ATC / DME tester, the industrial control computer, the DC power supply assembly, and the signal testing unit. The TCAS tester and the ATC / DME tester are connected to the industrial control computer via a switch. The industrial control computer is connected to the DC power supply assembly, which is also connected to the signal testing unit. This device enables automated testing of multiple devices under test, reducing testing costs and the workload of testing personnel, and improving the accuracy of test results.

The present invention provides a forward airborne collision avoidance system based on a conformal phased array antenna and its working method. In this system, the conformal phased array antenna serves as the receiving device for response signals; the collision avoidance host is used to complete interrogation coding, response decoding, monopulse angle measurement, target monitoring, and collision avoidance warning processing, and report the obtained target point track and collision avoidance warning information to the display and control device for display; among them, the monopulse angle measurement refers to monopulse angle measurement based on forming sum and difference beams by the phased array. The present invention uses a conformal phased array antenna as the receiving device for response signals. The antenna is conformal with the aircraft wing and does not affect the aerodynamic characteristics of the aircraft, and is applicable to aircraft with higher speeds and smaller volumes; at the same time, the method of monopulse angle measurement by forming sum and difference beams using a digital phased array can greatly improve the angle measurement accuracy of the system for targets compared with the traditional two-channel amplitude comparison / phase comparison angle measurement method.

This invention proposes a method and apparatus for reducing false alarms caused by asynchronous interference in an airborne collision avoidance system. Based on the principle of not affecting the normal function of the airborne collision avoidance system and meeting standard requirements, this invention filters out asynchronous interference signals to a certain extent by performing "intensity-distance" correlation judgment on the response signals received by the airborne collision avoidance system and adding a false target confirmation process within the minimum protection distance, thereby reducing the probability of asynchronous interference signals forming false targets and false alarms.

The invention discloses an airborne collision avoidance system hybrid monitoring S-mode target trace point fusion method based on multiple data sources, which comprises the following steps that: an airborne collision avoidance system carried by an aircraft acquires DF0 and DF16 messages responded by S-mode responders around the aircraft and an extended intermittent oscillation DF17 message broadcasted by ADS-B OUT equipment, and stores the DF0 and DF16 messages into a trace point linked list; assuming that track information of a tracked target aircraft is stored in a track chain table; traversing the trace points in the trace point chain table, and updating the track corresponding to the target aircraft in the track chain table according to the trace points in the trace point chain table. According to the method, wrong display prompts conveyed to the pilot due to target jump are reduced, and the purpose of reducing the aircraft operation burden of the pilot is achieved.

The invention discloses a miniaturized airborne anti-collision system and method, the system is composed of an anti-collision processing host and one or two omnidirectional antennas and can be flexibly configured to be in a single / double-channel working mode, a single channel is connected with one antenna, and double channels are connected with two antennas. The anti-collision transceiving host integrates a signal processing, transceiving and channel switching switch and a power supply module. Wherein the signal processing module controls the transceiving module to work, transmits a 1030MHz inquiry signal and receives a 1090MHz response and broadcast signal, the transmitting power is 54dBm-30dBm, the receiving sensitivity is-75dBm-51dBm, and the transmitting power and the receiving sensitivity are dynamically adjusted according to the track distance by taking 6dB as a unit. The signals are processed to generate track information, and an alarm is generated according to an anti-collision algorithm of the DO185 or DO385 standard. The problems that an existing anti-collision system is difficult to miniaturize and insufficient in compatibility are effectively solved, miniaturization, low cost and compatibility with the TCAS II or ACAS X standard are achieved, anti-collision guarantee is provided for a low-altitude aircraft, and low-altitude airspace operation safety is improved.

The present invention discloses a method and system for direction finding of an airborne collision avoidance system. The method includes obtaining corresponding channel compensation data according to the type of the selected directional antenna; performing channel amplitude and phase compensation on the signals received by the directional antenna by using the channel compensation data; performing digital shaping processing on the signals after amplitude and phase compensation, and parallelly outputting three groups of signals: the received signals in the amplitude monopulse system, the received signals in the phase monopulse system, and the weighted combined signals; parallelly processing the three groups of signals output after the shaping processing to obtain the azimuth information in the amplitude monopulse system and the azimuth information in the phase monopulse system, and making a decision on the azimuth information of the two systems to determine the target azimuth information. The present invention can realize the complementary advantages of the two direction finding systems, and improve the anti-interference performance and accuracy of TCAS direction finding.

The present invention discloses a traffic decision-making coordination method based on Markov decision, belonging to the field of airborne collision avoidance systems, and comprising the steps of: S1, generating by using a decision-making consultation coordination strategy based on Markov: taking the individual and global consultations generated by a decision-making consultation component as inputs, referring to the state factors of the own aircraft and the intruding aircraft, and constructing a coordination information operation process; calculating the optimal coordination information according to the vertical speed, consultation status and intruding aircraft information, selecting the optimal coordination strategy, and performing point-to-point output in the transponder of the own aircraft according to the optimal coordination strategy; the decision-making consultation component includes an airborne collision avoidance decision-making consultation component; S2, processing a response strategy based on active coordination; S3, generating a decision-making consultation based on the decision-making consultation coordination information. The present invention makes the coordination information more precise and secure, and at the same time is compatible with the existing TCAS II airborne traffic alert and collision avoidance system, greatly reducing the false alarm rate and saving the maintenance cost of the airborne collision avoidance algorithm.