The phrase "an existing trajectory" is correct and usable in written English.
It can be used when discussing a current path, course, or trend that is already in place or ongoing.
Example: "The research indicates that we are following an existing trajectory in climate change that requires immediate action."
Alternatives: "a current path" or "an ongoing trend".
Besides, existing trajectory merging method has to remove some trajectories from the input dataset.
Some automotive analysts have gone as far as predicting that on the existing trajectory, there will be 2.4 billion cars by 2030.
The probability of linking newly detected response to the existing trajectory is defined according to the appearance affinity, position affinity, and size affinity [23].
Furthermore, the existing trajectory tracking algorithms mainly deal with tracking object either using sophisticated invasive and expensive sensors [3,4], or treating tracking as a Hidden Markov Model (HMM) which needs adequate training data set to obtain model's parameter [5].
A platform can be programmed to match supply and demand based on explicitly inputted trajectories or can be independent from existing trajectories by allowing random matches.
By assigning the mitochondrial detection events in each frame to existing trajectories, the detection events were linked into trajectories frame by frame.
We argue that more proactive PIs utilising non-conformance strategies shape new research trajectories, while conformative and/or more reactive PIs predominantly pursue and deepen existing trajectories.
As distinguished by Benner and Tushman (2002), exploitative innovation builds on an existing technology trajectory, while explorative innovation involves a shift to a different technological trajectory.
Using a partial tracking algorithm, a new partial trajectory is created (partial birth) for each isolated estimated component (not associated to an existing partial trajectory).
For example, policymakers may want to change the trajectory of an existing indicator or measure a new indicator in ways that permit comparisons.
