Research Of The Multimodal Anticollision Collaborative Surveillance Simulation System

The basic purpose of air traffic controllers is to prevent aircraft and aircraft and between aircraft collided with obstacles between. First in control procedures taken safe safeguard, completed the interval first line of defense. Rely on the detection, discovery and TCAS of traffic hedge, alerting provides the second line of defence and third line of defence. However, with the development of science and technology, airborne warning system, ground monitoring system more advanced precision continuously improve but couldn't eradicate aircraft collided during operation of the hidden danger. May So, in paper writing process, the author dedicated to "multimodal impact-proof collaborative surveillance simulation system" research. System can pass adjust every monitoring system of warning threshold, the collaborative surveillance in multimodal circumstance, exploring conflicts, predict and found the alarm the potential risk of danger close to, and puts forward some opinions and disposal reference decision-making advice.Firstly, starting from three monitoring system, which TCAS, ADS - B, SSR, introduces an overview of the composition and principle of the three, finally describes their development status. On this basis, a three-dimensional model of space model, and the realization of the algorithm. In the study found, to build TCAS 3d space model is feasible, but it is not feasible in the system implementation, so the author abandon establish 3d coordinate methods, and use water-dividing peace vertical direction discussed two cases. Conflict in simultaneously meet only the horizontal and vertical alarm threshold conditions, can happen. The conflict threshold is TCAS based on time, build equivalent to irregular oval, ADS - B model is a cuboid, as long as it is invaded machine into the cuboid area, alerting occurs. And secondary radar model similar to the cylinder and the cylinder underside circle radius depends on the size of the separation. Space model established, and complete the design of pseudo-code.Article systematically demand analysis followed . Many mode impact-proof collaborative surveillance simulation system is a demonstration software to some of the mathematical model, the background for voice, video and transformation of the way the data display screen. System to WindowsXP for development platform, with Visual Basic 6.0 as a development tool, using Active control Mapx 5.0 background, the use of third party controls database system is Access. 2003. Finally, to achieve the function is generated by clicking on the plane on the map, but can be by input geodetic coordinates system on the map generating plane. Course design is divided into: custom routes mode and free flight mode. Track playback use ACCESS 2003, store data as the backend database, and when it is read out.This paper also list system realization of the auxiliary function, the system will complete realization, the realization of each child module can coordinate transformation, including: the realization, the realization of the great circle route, and the realization of the plane attributes. When the simulation results to show in the interface, need the realization of the interface module, including: the realization of voice and flashing warning the realization of aircraft wake line, the realization of the track, pretreatment, the last show of the interface. Papers all function pseudo-code way by certain modules, if need to use, only need to change the corresponding programming language, you can directly use.As the current ground equipment and onboard equipment is concerned, TCASII is the last defence alarms, if appear, it should be implemented immediately TCASII emergency response procedures. But if ADS - B onboard equipment includes CDTI standard can consider, the interval TCASII narrowed to the interval. So some predicted, automatic relevant surveillance (ADS) equipment use will make the plane is currently interval reduced to use only the TCASII the interval value. And now we use larger interval training institute standard. In plane positioning and navigation precision greatly enhance later, if still adopt the larger intervals will undoubtedly cause airspace waste . In many mode anti-collision system research, monitoring system can make full use of plane positioning and navigation precision greatly enhance this advantage, narrow flight intervals.