Training evaluation process

A method of correcting data on an aircraft's position and velocity relative to the earth said data being obtained during flight with an inertial navigation system (INS) on board said aircraft, comprising the steps of:

• prior to commencing an aircraft engagement, determining the pre-engagement position and velocity of said aircraft relative to the earth independently of said INS,
• at said pre-engagement position, operating said INS to obtain pre-engagement INS data on the position and velocity of said aircraft relative to the earth,
• recording said pre-engagement INS data on position and velocity obtained by said INS at said pre-engagement position,
• flying said aircraft in an engagement,
• during said engagement of said aircraft continuing to operate said INS to obtain INS data on the position and velocity of said aircraft relative to the earth,
• recording the INS data obtained on position and velocity during said engagement,
• after the termination of said engagement by said aircraft, determining the post-engagement position and velocity of said aircraft relative to the earth independently of said INS,
• at said post-engagement position, operating said INS to obtain post-engagement INS data on the position and velocity of said aircraft relative to the earth,
• recording said post-engagement INS data on position and velocity obtained by said INS at said post-engagement position,
• comparing said independently determined pre-engagement position and velocity of said aircraft with the pre-engagement INS data on position and velocity, respectively, to obtain pre-engagement error functions of position and velocity,
• comparing said independently determined post-engagement position and velocity of said aircraft with the post-engagement INS data on position and velocity to obtain post-engagement error functions of position and velocity,
• employing said pre-engagement error functions of position and velocity, said post-engagement error functions of position and velocity and the known time-variant drift characteristics of position and velocity of said INS to derive position and velocity correction functions during the time of said engagement,
• employing said position and velocity correction functions to correct the recorded INS data obtained on position and velocity, respectively, during said engagement to obtain corrected INS data on position and velocity during said engagement, and
• storing said corrected INS data on position and velocity.

A method of displaying more accurate visual portrayals of an aircraft's position relative to background portrayals of features or terrain on the earth during flight, said more accurate visual portrayals resulting from correction of data obtained during flight with an onboard inertial navigation system system (INS) comprising the steps of:

• prior to commencing an aircraft engagement, determining the pre-engagement position of said aircraft relative to the earth independently of said INS,
• at said pre-engagement position, operating said INS to obtain pre-engagement INS data on the position of said aircraft relative to the earth,
• recording said pre-engagement INS data on position obtained by said INS at said pre-engagement position,
• flying said aircraft in an engagement,
• during said engagement of said aircraft continuing to operate said INS to obtain INS data on the position of said aircraft relative to the earth,
• recording the INS data obtained on position during said engagement,
• after the termination of said engagement by said aircraft, determining the post-engagement position of said aircraft relative to the earth independently of said INS,
• at said post-engagement position, operating said INS to obtain post-engagement INS data on the position of said aircraft relative to the earth,
• recording said post-engagement INS data on position obtained by said INS at said post-engagement position,
• comparing said independently determined pre-engagement position of said aircraft with the pre-engagement INS data on position to obtain pre-engagement error functions of position,
• comparing said independently determined post-engagement position of said aircraft with the post-engagement INS data on position to obtain post-engagement error functions of position,
• employing said pre-engagement error functions of position, said post-engagement error functions of position and the known time-variant drift characteristics of position of said INS to derive position correction functions during the time of said engagement,
• employing said position correction functions to correct the recorded INS data obtained on position during said engagement to obtain corrected INS data on position during said engagement,
• storing said corrected INS data on position, and
• employing said stored corrected INS data on position to display post-flight the position of said aircraft during said engagement relative to background portrayals of features or terrain on the earth.

A method of correcting data on an aircraft's position relative to the earth, said data being obtained during flight with an inertial navigation system (INS) on board said aircraft, comprising the steps of:

• prior to take off of said aircraft, locating said aircraft at a known pre-flight position,
• at said known pre-flight position, commencing to operate said INS to obtain pre-flight INS data on position,
• recording the pre-flight INS data on position obtained by said INS at said known pre-flight position,
• taking said aircraft off and flying said aircraft in an engagement,
• during said engagement of said aircraft, continuing to operate said INS to obtain INS data on position,
• during said engagement, recording the INS data obtained on position as a function of time with respect to the commencement of operation of said INS pre-flight,
• landing said aircraft and locating said aircraft at a known post-flight position,
• at said known post-flight position, continuing to operate said INS to obtain post-flight INS data on position,
• comparing the known aircraft position at said pre-flight position with the pre-flight INS data on position obtained to obtain pre-flight error functions of position,
• comparing the known aircraft position at said post-flight position with the post-flight INS data on position obtained to obtain post-flight error functions of position.
• employing said pre-flight error functions on position, said post-flight error functions on position and the known time-variant drift characteristics of position of said INS to derive position correction functions during the time of said engagement,
• employing said position correction functions to correct the recorded INS data obtained on position during said engagement to obtain corrected INS data on position during said engagement, and
• storing said corrected INS data on position.

A method of correcting data on an aircraft's position and velocity relative to the earth, said data being obtained during flight with an inertial navigation system (INS) on board said aircraft, comprising the steps of:

• prior to take off of said aircraft, locating said aircraft at a known pre-flight position,
• at said known pre-flight position, commencing to operate said INS to obtain pre-flight INS data on position and velocity,
• recording the pre-flight INS data on position and velocity obtained by said INS at said known pre-flight position,
• taking said aircraft off and flying said aricraft in an engagement,
• during said engagement, continuing to operate said INS to obtain INS data on position and velocity,
• during said engagement, recording the INS data obtained on position and velocity as a function of time with respect to the commencement of operation of said INS pre-flight,
• landing said aircraft and locating said aircraft at a known post-flight position,
• at said known post-flight position, continuing to operate said INS to obtain post-flight INS data on position and velocity,
• recording the post-flight INS data on position and velocity as obtained by said INS at said known post-flight position,
• comparing the known aircraft position and velocity at said pre-flight position with the pre-flight INS data on position and velocity obtained respectively to obtain pre-flight error functions of position and velocity,
• comparing the known aircraft position and velocity at said post-flight position with the post-flight INS data on position and velocity obtained respectively to obtain post-flight error functions of position and velocity,
• employing said pre-flight error functions on position and velocity, said post-flight error functions on position and velocity and the known time-variant drift characteristics of position and velocity of said INS to derive position and velocity correction functions during the time of said engagement,
• employing said position and velocity correction functions to correct the recorded INS data obtained on position and velocity, respectively, during said engagement to obtain corrected INS data on position and velocity during said engagement, and
• storing said corrected INS data on position and velocity.

A method of displaying more accurate visual portrayals of an aircraft's position relative to background portrayals of features or terrain on the earth during flight, said more accurate visual portrayals resulting from correction of data obtained during flight with an on-board inertial navigation system (INS) comprising the steps of:

• prior to take off of said aircraft, locating said aircraft at a known pre-flight position,
• at said known pre-flight position, commencing to operate said INS to obtain pre-flight INS data on position,
• recording the pre-flight INS data on position obtained by said INS at said known pre-flight position,
• taking said aircraft off and flying said aircraft in an engagement,
• during said engagement, continuing to operate said INS to obtain INS data on position,
• during said engagement, recording the INS data obtained on position as a function of time with respect to the commencement of operation of said INS pre-flight,
• landing said aircraft and locating said aircraft at a known post-flight position,
• at said known post-flight position, continuing to operate said INS to obtain post-flight INS data on position,
• recording the post-flight INS data on position as obtained by said INS at said known post-flight position,
• comparing the known aircraft position at said pre-flight position with the pre-flight INS data on position obtained to obtain pre-flight error functions of position,
• comparing the known aircraft position at said post-flight position with the post-flight INS data on position obtained to obtain post-flight error functions of position,
• employing said pre-flight error functions on position, said post-flight error functions on position and the known time-variant drift characteristics of position of said INS to derive position correction functions during the time of said engagement,
• employing said position correction functions to correct the recorded INS data obtained on position during said engagement to obtain corrected INS data on position during said engagement,
• storing said corrected INS data on position, and
• employing said stored corrected INS data on position to display post-flight the position of said aircaft during said engagement relative to background portrayals of features or terrain on the earth.

A method of correcting data on the position of two or more aircraft relative to the earth, said data being obtained during flight with an inertial navigation system (INS) on board each aircaft, one of said aircaft being designated as a reference aircraft, comprising the steps of:

• prior to commencing an engagement, determining the pre-engagement position of each of said aircraft relative to the earth independently of said INS,
• at said pre-engagement position of each of said aircraft, operating said INS of each of said aircraft to obtain pre-engagement INS data on the position of each of said aircraft relative to the earth,
• recording said pre-engagement INS data on position obtained by each of said INS at said pre-engagement position of each of said aircraft,
• flying said aircraft in an engagement,
• during said engagement of said aircraft continuing to operate said INS of each of said aircraft to obtain INS data on the position of each of said aircraft relative to the earth,
• recording the INS data obtained on position by each of said INS during said engagement,
• during said engagement, at a time near a maneuver, determining the relative position of said other aircraft with respect to said reference aircraft,
• after the termination of said engagement by said aircraft, determining the post-engagement position of each of said aircraft relative to the earth independently of said INS,
• at said post-engagement position, operating said INS of each of said aircraft to obtain post-engagement INS data on the position of each of said aircraft relative to the earth,
• recording said post-engagement INS data on position obtained by each of said INS at said post-engagement position obtained by each of said aircraft,
• comparing said independently determined pre-engagement position of each of said aircraft with the pre-engagement INS data on position of each of said aircraft respectively to obtain pre-engagement error functions of position for each of said aircraft,
• comparing said independently determined post-engagement position of each of said aircraft with the post-engagement INS data on position of each of said aircraft to obtain post-engagement error functions of position for each of said aircraft,
• for each aircraft, employing said pre-engagement error functions of position of said aircraft, said post-engagement error functions of position of said aircraft and the known time-variant drift characteristics of position of said INS of said aircraft to derive position correction functions during the time of said engagement,
• for each aircraft, employing said position correction functions for said aircraft to correct the recorded INS data obtained on position for said aircraft during said engagement to obtain corrected INS data on position for said aircraft during said engagement,
• storing said corrected INS data on position of said reference aircraft,
• comparing said relative position of said other aircraft with said other aircraft's corrected INS data on the position of said other aircraft to obtain relative error functions,
• employing said relative error functions to further correct said corrected INS data on position for said other aircraft during said engagement, and
• storing said further corrected INS data on position for said other aircraft.

A method of correcting data on the position of two or more aircraft relative to the earth, said data being obtained during flight with an inertial navigation system (INS) on board each aircraft, comprising the steps of:

• prior to commencing an engagement, determining the pre-engagement position of each of said aircraft relative to the earth independently of said INS,
• at said pre-engagement position of each of said aircraft, operating said INS of each of said aircraft to obtain pre-engagement INS data on the position of each of said aircraft relative to the earth,
• recording said pre-engagement INS data on position obtained by each of said INS at said pre-engagement position of each of said aircraft,
• flying said aircraft in an engagement,
• during said engagement of said aircraft continuing to operate said INS of each of said aircraft to obtain INS data on the position of each of said aircraft relative to the earth,
• recording the INS data obtained on position by each of said INS during said engagement,
• during said engagement, at a time near a maneuver, determining the relative position of each of said aircraft with respect to a known position on the earth,
• after the termination of said engagement by said aircraft, determining the post-engagement position of each of said aircraft relative to the earth independently of said INS,
• at said post-engagement position, operating said INS of each of said aircraft to obtain post-engagement INS data on the position of each of said aircraft relative to the earth,
• recording said post-engagement INS data on position obtained by each of said INS at said post-engagement position of each of said aircraft,
• comparing said independently determined pre-engagement position of each of said aircraft with the pre-engagement INS data on position of each of said aircraft respectively to obtain pre-engagement error functions of position for each of said aircraft,
• comparing said independently determined post-engagement position of each of said aircraft with the post-engagement INS data on position of each of said aircraft respectively to obtain post-engagement error functions of position for each of said aircraft,
• for each aircraft, employing said pre-engagement error functions of position of said aircraft, said post-engagement error functions of position of said aircraft and the known time-variant drift characteristics of position of said INS of said aircraft to derive position correction functions during the time of said engagement,
• for each aircraft, employing said position correction functions for said aircraft to correct the recorded INS data obtained on position for said aircraft during said engagement to obtain corrected INS data on position for said aircraft during said engagement,
• comparing said relative position of each of said aircraft with its corrected INS data on the position of said aircraft to obtain relative error functions for each of said aircraft,
• employing said relative error functions of each of said aircraft to further correct its corrected INS data on position during said engagement, and
• storing said further corrected INS data on position for each of said aircraft.

A method of correcting data on the position of two or more aircraft relative to the earth, said data being obtained during flight with an inertial navigation system (INS) on board each aircraft, one of said aircraft being designated as a reference aircraft, comprising the steps of:

• prior to take off of said aircraft, locating each of said aircraft at a known pre-flight position respectively,
• at said known pre-flight position of each of said aircraft commencing to operate said INS of each of said aircraft to obtain pre-flight INS data on position for each of said aircraft,
• recording the pre-flight INS data on position obtained by each of said INS at said known pre-flight position of each of said aircraft,
• taking said aircraft off and flying said aircraft in an engagement,
• during said engagement, continuing to operate said INS of each of said aircraft to obtain INS data on the position of each of said aircraft relative to the earth,
• during said engagement, recording the INS data of each of said aircraft obtained on position as a function of time with respect to the commencement of operation of its INS pre-flight,
• during said engagement, at a time near a maneuver, determining the relative position of said other aircraft with respect to said reference aircraft,
• landing said aircraft and locating each of said aircraft at a known post-flight position,
• at said known post-flight position of each of said aircraft, continuing to operate said INS of each of said aircraft to obtain post-flight INS data on position for each of said aircraft,
• recording the post-flight INS data on position obtained by each of said INS at said known post-flight INS position of each of said aircraft,
• comparing the known aircraft position at said pre-flight position of each of said aircraft with its pre-flight INS data obtained on position to obtain pre-flight error functions of position for each aircraft,
• comparing the known aircraft position at said post-flight position of each of said aircraft with its post-flight INS data obtained on position to obtain post-flight error functions of position for each aircraft,
• for each aircraft, employing said pre-flight error functions of position of said aircraft, said post-flight error functions of position of said aircraft, and the known time-variant drift characteristics of position of the INS of said aircraft to derive position correction functions during the time of said engagement,
• for each aircraft, employing said position correction functions for said aircraft to correct the recorded INS data obtained on position for said aircraft during said engagement to obtain corrected INS data on position for said aircraft during said engagement,
• storing said corrected INS data on position of said reference aircraft,
• comparing said relative position of said other aircraft with its corrected INS data on the position of said other aircraft to obtain relative error functions,
• employing said relative error functions to further correct said corrected INS data on position for said other aircraft during said enagagement, and
• storing said further corrected INS data on position for said other aircraft.

A method of correcting data on the position of two or more aircraft relative to the earth, said data being obtained during flight with an inertial navigation system (INS) on board each aircraft, comprising the steps of:

• prior to take off of said aircraft, locating each of said aircraft at a known pre-flight position respectively,
• at said known pre-flight position of each of said aircraft, commencing to operate said INS of each of said aircraft to obtain pre-flight INS data on position for each of said aircraft,
• recording the pre-flight INS data on position obtained by each of said INS at said known pre-flight position of each of said aircraft,
• taking said aircraft off and flying said aircraft in an engagement,
• during said engagement, continuing to operate said INS of each of said aircraft to obtain INS data on the position of each of said aircraft relative to the earth,
• during said engagement, recording the INS data of each of said aircraft obtained on position as a function of time with respect to the commencement of operation of its INS pre-flight,
• during said engagement, at a time near a maneuver, determining the relative position of each of said aircraft with respect to a known position on the earth,
• landing said aircraft and locating each of said aircraft at a known post-flight position,
• at said known post-flight positon of each of said aircraft, continuing to operate said INS of each of said aircraft to obtain post-flight INS data on position for each of said aircraft,
• recording the post-flight INS data on position obtained by each of said INS at said known post-flight INS position of each of said aircraft,
• comparing the known aircraft position at said pre-flight position of each of said aircraft with its pre-flight INS data obtained on position to obtain pre-flight error functions of position for each aircraft,
• comparing the known aircraft position at said post-flight position of each of said aircraft with its post-flight INS data obtained on position to obtain post-flight error functions of position,
• for each aircraft, employing said pre-flight error functions of position of said aircraft, said post-flight error functions of position of said aircraft, and the known time-variant drift characteristics of position of the INS of said aircraft to derive position correction functions during the time of said flight exercise,
• for each aircraft, employing said position correction functions for said aircraft to correct the recorded INS data obtained on position for said aircraft during said engagement to obtain corrected INS data on position for said aircraft during said engagement,
• comparing said relative position of each of said aircraft with its corrected INS data on the position of said aircraft to obtain relative error functions for each of said aircraft,
• employing said relative error functions of each of said aircraft to further correct its corrected INS data on position during said engagement, and
• storing said further corrected INS data on position for each of said aircraft.

A method of correcting data on a vehicle's position relative to the earth, said data being obtained during a mission with an inertial navigation system (INS) on board said vehicle, comprising the steps of:

• prior to commencing an engagement, determining the pre-engagement position of said vehicle relative to the earth independently of said INS,
• at said pre-engagement position, operating said INS to obtain pre-engagement INS data on the position of said vehicle relative to the earth,
• recording said pre-engagement INS data on position obtained by said INS at said pre-engagement position,
• engaging said vehicle in an engagement,
• during said engagement of said vehicle continuing to operate said INS to obtain INS data on the position of said vehicle relative to the earth,
• recording the INS data obtained on position during said engagement,
• after the termination of said engagement by said vehicle, determining the post-engagement position of said vehicle relative to the earth independently of said INS,
• at said post-engagement position, operating said INS to obtain post-engagement INS data on the position of said vehicle relative to the earth,
• recording said post-engagement INS data on position obtained by said INS at said post-engagement position,
• comparing said independently determined pre-engagement position of said vehicle with the pre-engagement INS data on position to obtain pre-engagement error functions of position,
• comparing said independently determined post-engagement position of said vehicle with the post-engagement INS data on position to obtain post-engagement error functions of position,
• employing said pre-engagement error functions of position;
• said post-engagement error functions of position and the known time-variant drift characteristics of position of said INS to derive position correction functions during said engagement,
• employing said position correction functions to correct the recorded INS data obtained on position during said engagement to obtain corrected INS data on position during said engagement, and
• storing said corrected INS data on position.