Power control method for systems with altitude changing objects
A communication system for an altitude changing object is provided. The communication system can include an antenna system having one or more antennas. The one or more antennas can be associated with a single fixed radiation pattern. The communication system can include one or more processors configured to execute a control routine to perform operations. The operations can include obtaining data indicative of one or more communication parameters associated with the altitude changing object. The operations can include determining a transmit power for each of the one or more antennas based at least in part on the one or more communication parameters. The operations can include controlling the antenna system based at least in part on the transmit power to communicate with a node in the communication network.
1. A method for controlling a modal antenna located on an altitude changing object, the method comprising:
obtaining, by one or more processors, data associated with one or more communication parameters for the altitude changing object, wherein the one or more communication parameters comprise an altitude of the altitude changing object;
determining, by the one or more processors, a selected mode of a plurality of modes for the modal antenna based at least in part on the altitude of the altitude changing object, each of the plurality of modes associated with a distinct radiation pattern;
controlling, by the one or more processors, the modal antenna to configure the antenna in the selected mode.
2. The method of claim 1 , wherein the one or more communication parameters comprises orientation of the altitude changing object or direction of travel of the altitude changing object.
3. The method of claim 1 , wherein the one or more communication parameters comprise location of the altitude changing object in a communication network.
4. The method of claim 1 , wherein the one or more parameters comprise a location of one or more nodes in the communication network.
5. The method of claim 1 , wherein determining, by the one or more processors, a selected mode of the plurality of modes for the modal antenna comprises determining a mode to steer a null associated with a radiation pattern for the selected mode based at least in part on interference in the communication network.
6. The method of claim 1 , wherein the modal antenna comprises a radiating element and one or more parasitic elements, wherein controlling, by the one or more processors, the modal antenna to configure the antenna in the selected mode comprises varying a reactance associated with at least one of the one or more parasitic elements.
7. The method of claim 6 , wherein the radiating element is positioned adjacent to a circuit board forming an antenna volume defined therebetween and the one or more parasitic elements comprise:
a first parasitic element positioned adjacent to the radiating element and outside the antenna volume, and
a second parasitic element positioned adjacent to the radiating element and within the antenna volume.
8. An altitude changing object, comprising:
an antenna system having one or more modal antennas, each modal antenna configurable in a plurality of modes, each mode associated with a distinct radiation pattern;
one or more processors, the one or more processors configured to execute a control routine to perform operations, the operations comprising:
obtaining data indicative of one or more communication parameters associated with the altitude changing object, wherein the one or more communication parameters comprise an altitude of the altitude changing object; and
determining one or more of a selected mode and a transmit power for each of the one or more modal antennas based at least in part on the altitude of the altitude changing object; and
controlling the antenna system based at least in part on one or more of the transmit power and the selected mode to communicate with a node in the communication network.