Flight Trajectory Replay with Constant-Speed Path Segmentation
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Solution Overview
Problem
Existing trajectory replay methods for aircraft struggle to maintain a constant speed during replay due to the inclusion of paused waypoints in the original flight path, leading to unneeded pauses and poor replay effects.
Innovation Solution
Collect flight state data at multiple times to generate an original flight path, determine safe speeds at each position, and create a replay trajectory based on these speeds to ensure the aircraft flies at a constant speed during replay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the original trajectory includes paused waypoints with time significance, then the trajectory replay can follow the original flight path accurately, but the aircraft cannot move at a constant speed during replay, causing unneeded pauses
Solution Approach 1:
The original trajectory is divided into multiple segments between consecutive waypoints. For each segment, the system calculates a constant speed value based on the distance and time information from the original flight data. This segmentation allows the aircraft to maintain constant speed within each segment while transitioning smoothly between segments, eliminating unnecessary pauses while preserving trajectory accuracy.
Solution Approach 2:
The system dynamically adjusts the speed parameter during replay by calculating appropriate constant speeds for different trajectory segments. Instead of using fixed time intervals from the original flight data, the system computes speed values that enable continuous motion while maintaining fidelity to the original path, allowing the aircraft to adapt its speed profile to eliminate pauses.
2Reliability
If the trajectory replay follows recorded time-significant waypoints, then the replay trajectory matches the original flight, but unneeded pauses occur affecting the replay effect
Solution Approach 1:
Before executing the trajectory replay, the system pre-calculates constant speed values for all trajectory segments based on the recorded waypoint data. This preliminary computation of speed profiles ensures that the aircraft can execute the replay continuously without pauses, improving replay efficiency while maintaining fidelity to the original flight path through the pre-planned speed adjustments.
Data Source
AI summary
Embodiments of the present disclosure provides method, device, and storage medium for flight trajectory replay. The method includes obtaining flight state data collected by an aircraft at a plurality of flight times, and generating an original flight path based on the flight state data, the flight state data including at least one of a position, a speed, or an acceleration of the aircraft; determining a safe speed of each position in the original flight path based on the original flight path; and generating a replay trajectory based on the safe speed of each position, and generating a control instruction based on the replay trajectory for controlling the aircraft to fly along the replay trajectory. While generating the replay trajectory, the aircraft can fly at a constant speed during the replay.