The use of the correction course option before aircraft take-off after inertial\nnavigation system (INS) inaccurate alignment based on the platform attitude-and-heading\nreference system in azimuth is considered in the paper. A course correction is performed based\non the track angle defined by the information received from the satellite navigation system\n(SNS). The course correction incudes a calculated track error definition during ground taxiing\nalong straight sections before take-off with its input in the onboard digital computational\nsystem like amendment for using in the current flight. The track error calculation is performed\nby the statistical evaluation of the track angle comparison defined by the SNS information with\nthe current course measured by INS for a given number of measurements on the realizable time\ninterval. The course correction testing results and recommendation application are given in the\npaper. The course correction based on the information from SNS can be used for improving\naccuracy characteristics for determining an aircraft path after making accelerated INS\npreparation concerning inaccurate initial azimuth alignment.
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