“In the field of aerospace, researchers have proposed a distance search algorithm based on dynamic thresholds to improve the success rate and accuracy of initial orbit determination. This algorithm achieves more accurate and efficient initial orbit determination by dynamically adjusting the search threshold, meeting the requirements for initial orbit determination of spatial targets. Testing was conducted using measured data from LEO, MEO, and GEO targets, and the results showed that the algorithm has a high success rate and orbit determination accuracy, providing an effective solution for monitoring data quality.”