A method of generating an estimated initial mass of an aircraft includes obtaining a first sequence of instructions indicating aircraft intent for a particular phase of a flight. The first sequence of instructions includes multiple sequential tabular instructions for a set of segments of the particular phase, and operation of the aircraft according to the first sequence of instructions would result in a particular altitude profile during the particular phase. The method includes determining, using a bounded optimization operation, a first estimated mass of the aircraft and a throttle law instruction that, together, result in the particular altitude profile over a group of the segments. The method includes generating a second sequence of instructions that replaces the tabular instructions for the group of the segments with the throttle law instruction. The method also includes determining the estimated initial mass at least partially based on the first estimated mass.

An aerial system control network, an unmanned aerial vehicle (UAV) system, and a method provide for inspecting railroad assets using a UAV. The aerial system control network includes a plurality of towers and a ground control system connected to the plurality of towers. The ground control system transmits, via a plurality of communication towers, a flight plan including a rail system and a flight path; receives, via the plurality of communication towers, data while the UAV is in monitoring the rail system; detects an interference along the flight path based on the received data, and adjusts the flight plan based on the interference.

An aerial system control network, an unmanned aerial vehicle (UAV) system, and a method provide for inspecting railroad assets using a UAV. The aerial system control network includes a plurality of towers and a ground control system connected to the plurality of towers. The ground control system transmits, via a plurality of communication towers, a flight plan including a rail system and a flight path; receives, via the plurality of communication towers, data while the UAV is in monitoring the rail system; detects an interference along the flight path based on the received data, and adjusts the flight plan based on the interference.

A method is disclosed. The method includes receiving an indication of presence of an aircraft in a vicinity of an uncrewed aerial vehicle (UAV) which is flying along a flight path. The method also includes decelerating, based on the received indication, the UAV to reduce a ground speed along the flight path. The method additionally includes descending, after reducing the ground speed, the UAV to a hover position. The method further includes determining, while the UAV is in the hover position, whether to resume the flight path or to land the UAV based on a determination of continued presence of the aircraft in the vicinity of the UAV. The method also includes controlling the UAV based on the determination of whether to resume the flight path or to land the UAV.

A method is disclosed. The method includes receiving an indication of presence of an aircraft in a vicinity of an uncrewed aerial vehicle (UAV) which is flying along a flight path. The method also includes decelerating, based on the received indication, the UAV to reduce a ground speed along the flight path. The method additionally includes descending, after reducing the ground speed, the UAV to a hover position. The method further includes determining, while the UAV is in the hover position, whether to resume the flight path or to land the UAV based on a determination of continued presence of the aircraft in the vicinity of the UAV. The method also includes controlling the UAV based on the determination of whether to resume the flight path or to land the UAV.

A system and a method include a flight plan generating control unit configured to receive a flight plan request for an aircraft from a user interface, determine if the flight plan request matches a flight plan within a flight plan database, in response to the flight plan request matching the flight plan within the flight plan database, submit the flight plan to a validation sub-system, and in response to the flight plan request not matching the flight plan within the flight plan database, determine a new flight plan.

A system and a method include a flight plan generating control unit configured to receive a flight plan request for an aircraft from a user interface, determine if the flight plan request matches a flight plan within a flight plan database, in response to the flight plan request matching the flight plan within the flight plan database, submit the flight plan to a validation sub-system, and in response to the flight plan request not matching the flight plan within the flight plan database, determine a new flight plan.

A computer-implemented method for correcting initial NOTAM-messages using a trained machine-learning algorithm, comprising: inputting a plurality of initial NOTAM-messages from a plurality of data sources, identifying, from the E-field and using the trained machine-learning algorithm, a plurality of permissible values for the traffic, the purpose, scope, first NOTAM-code-component, and second NOTAM-code-component; selecting a preferred value for one or more of the traffic, purpose, scope, first NOTAM-code-component, and second NOTAM-code-component, wherein selecting of the preferred value is done using a set of probabilities; and setting the selected value for the traffic, purpose, scope, first NOTAM-code-component, and second NOTAM-code-component as corrected values for the traffic, purpose, scope, first NOTAM-code-component, and second NOTAM-code-component to produce corrected NOTAM-message. The initial NOTAM-messages comprises at least a Q-field and an E-field. The E-field comprises a string describing a content of the initial NOTAM-messages.

Described herein are systems and methods for assigning and managing RF communication links between ground-based stations and airborne assets. In one or more examples, a pilot or other user of the systems and methods described herein can generate and transmit a flight plan to a spectrum management system. Additionally, or alternatively, the pilot or use can also transmit additional information to the spectrum management system such as the type of aircraft/radio configuration that they will be using during a flight, and a request for a certain amount of data throughput that they want to have access to during the flight. In one or more examples, upon receiving the flight plan and/or information from the pilot, the spectrum management system can proceed to match the user's desired flight plan with one or more RF spectrum resources for the airborne radio of the pilot's UAV to use during their planned flight.

Described herein are systems and methods for assigning and managing RF communication links between ground-based stations and airborne assets. In one or more examples, a pilot or other user of the systems and methods described herein can generate and transmit a flight plan to a spectrum management system. Additionally, or alternatively, the pilot or use can also transmit additional information to the spectrum management system such as the type of aircraft/radio configuration that they will be using during a flight, and a request for a certain amount of data throughput that they want to have access to during the flight. In one or more examples, upon receiving the flight plan and/or information from the pilot, the spectrum management system can proceed to match the user's desired flight plan with one or more RF spectrum resources for the airborne radio of the pilot's UAV to use during their planned flight.