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MDP (Markov decision process) based airborne collision avoidance system logical unit design method

An airborne anti-collision system and logic unit technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as failure to take into account aircraft collisions, logic unit reliability, etc., achieve short development time and improve safety The effect of performance and convenient operation

Active Publication Date: 2017-05-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The prediction result of the linear prediction model is the most likely position of the aircraft at the next moment, which fails to take into account the small probability of aircraft collisions, which will affect the reliability of the logic unit's decision-making

Method used

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  • MDP (Markov decision process) based airborne collision avoidance system logical unit design method
  • MDP (Markov decision process) based airborne collision avoidance system logical unit design method
  • MDP (Markov decision process) based airborne collision avoidance system logical unit design method

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Embodiment

[0048] Such as figure 1 As shown, the design method of the logical unit of the airborne collision avoidance system based on MDP includes the following steps: Step 1, establish the encounter model; Step 2, use the Markov decision process to model the aircraft collision avoidance problem; Step 3, according to The established model constructs the logical table and obtains the logical unit. In this embodiment, the encounter process of two aircraft meets the following conditions when the encounter model is established: the TCAS system decision frequency is 1 Hz, the two aircraft do not maneuver in the horizontal direction, the sensor measurement data is accurate, there is no coordination between the two aircraft, and a single Invasion machine.

[0049] The Markov decision process consists of a quintuple (S, A, T, γ, R), where S represents the set of states (e.g., the state consisting of the positions and velocities of the two aircraft during their encounter set). A represents a ...

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Abstract

The invention discloses an MDP (Markov decision process) based airborne collision avoidance system logical unit design method which is characterized by including the steps of 1, building encounter models; 2, modeling for aircraft collision avoidance by means of the MDP; 3, creating a logical table according to the models so as to obtain the logical units. Reliability of the designed logical units can be improved and the logical units can be modified conveniently by application of the method. Therefore, by the method, safety performance of aircraft in flying is improved while the logical units can be modified and reconstructed repeatedly.

Description

technical field [0001] The invention relates to an airborne anti-collision system, in particular to a design method of a logical unit of the airborne anti-collision system based on MDP. Background technique [0002] The logic unit module is an important module of the air traffic collision avoidance system (TCAS), which is used to judge whether the intruder will pose a threat to the machine, and further judge whether to issue a decision-making consultation. The current TCAS logic unit development process mainly uses pseudocode to define the logic unit, which contains complex heuristic rules and parameter settings, which makes the modification of the logic unit very difficult, and may also introduce new problems during the modification process. [0003] The TCAS logic unit is equipped with a model for predicting the position of the aircraft at the next moment. The prediction model of the existing TCAS logic unit generally adopts a linear prediction model. When the linear pred...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 林云松彭良福王黎李朋
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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