Possible intersection angle solutions in trigonometry for multiple helicopter collision avoidance

Chin-E. Lin, Shih Che Hung, Shao Kang Chien

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Helicopter collision avoidance deals with two or more aircraft when separation violation and/or possible conflict. The mechanism should detect and forecast any approaching aircraft of track intersections. Because of the Earth curvature affects the mathematical surface in WGS84 coordinate system, the geometric relationship between aircraft can be calibrated within appropriate surveillance range, and transformed into planar motion. From real time surveillance data, flight information of each aircraft will establish a trigonometric relationship for separation analysis. A range of possible intersecting angle (PIA) can be found to assess their conflict situation under predetermined priority. This paper presents a separation analysis from this trigonometric relationship and proposes a simple algorithm to detect the possible intersection for approaching aircraft. Separation minimum is also included to maintain safety airspace both in lateral and longitudinal approaching. Due to helicopter performance in low altitude, vertical separation minimum is not applied. Conflict assessment leading to initial resolutions can be determined. The concept of conflict detection and mathematical formulations are presented. From different scenarios of simulation, the proposed method is effective to detect and predict the in-air conflict in early warning by PIA concept. Collision avoidance can further be developed. The proposed real time detection method can be applied with any appropriate surveillance with data link.

Original languageEnglish
Title of host publicationAIAA Guidance, Navigation, and Control Conference and Exhibit
Publication statusPublished - 2001
EventAIAA Guidance, Navigation, and Control Conference and Exhibit 2001 - Montreal, QC, Canada
Duration: 2001 Aug 62001 Aug 9

Other

OtherAIAA Guidance, Navigation, and Control Conference and Exhibit 2001
CountryCanada
CityMontreal, QC
Period01-08-0601-08-09

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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