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US 11,387,903 B2Granted
APT subsystem and spacecraft communications system
AssigneeHuawei Technologies Co., Ltd.
InventorsXueliang Shi, Bin Wang, Jun Wang
Life of this patent
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Abstract
This application relates to the field of space communications technologies, and provides an acquisition, pointing, and tracking (APT) subsystem and a spacecraft communications system. The APT subsystem includes a first controller, a first terahertz transceiver, and a terahertz antenna array that are sequentially connected, where the first terahertz transceiver is configured to modulate and demodulate a terahertz wave; the terahertz antenna array is configured to send and receive the terahertz wave; and the first controller is configured to control the first terahertz transceiver to acquire, point, and track another APT subsystem by using the terahertz antenna array.
Claims13
An acquisition, pointing, and tracking (APT) subsystem, comprising:
- a first controller;
- a first terahertz transceiver system, configured to modulate and demodulate terahertz waves, wherein the first terahertz transceiver system comprises a first terahertz transceiver that supports a second frequency band and a second terahertz transceiver that supports a third frequency band;
- and
- a terahertz antenna array system, comprising a first beamforming network and an antenna array connected to each other;
- wherein the first controller, the first terahertz transceiver system, and the terahertz antenna array system are sequentially connected, and wherein the terahertz antenna array system is configured to send and receive terahertz waves;
- wherein the first controller is configured to control the first terahertz transceiver system to acquire, point, and track another APT subsystem using the terahertz antenna array system;
- wherein the first beamforming network comprises a beamforming network that supports the second frequency band and a beamforming network that supports the third frequency band, the antenna array comprises a set of multi-band antenna arrays;
- wherein the first terahertz transceiver that supports the second frequency band, the beamforming network that supports the second frequency band, and the set of multi-band antenna arrays are sequentially connected;
- wherein the second terahertz transceiver that supports the third frequency band, the beamforming network that supports the third frequency band, and the set of multi-band antenna arrays are sequentially connected;
- wherein a center frequency of the second frequency band is less than a center frequency of the third frequency band;
- and
- wherein the first controller is configured to:
- control, in a coarse tracking phase, working of the first terahertz transceiver that supports the second frequency band, wherein the coarse tracking phase is a phase in which tracking precision of the first terahertz transceiver that supports the second frequency band meets an acquisition requirement after an acquisition phase of the first terahertz transceiver that supports the second frequency band starts, or the coarse tracking phase is a phase within preset duration after a start moment of the acquisition phase of the first terahertz transceiver that supports the second frequency band;
- and
- control, in a fine tracking phase, working of the second terahertz transceiver that supports the third frequency band, wherein the fine tracking phase is a phase that is adjacent to and located after the coarse tracking phase in a time sequence.
12 more elements
A spacecraft communications system, comprising:
- a first acquisition, pointing, and tracking (APT) subsystem, the first APT subsystem comprising:
- first controller;
- a first terahertz transceiver system, configured to modulate and demodulate terahertz waves, wherein the first terahertz transceiver system comprises a first terahertz transceiver that supports a second frequency band and a second terahertz transceiver that supports a third frequency band;
- and
- a first terahertz antenna array system, wherein the first terahertz antenna array system comprises a first beamforming network and an antenna array, and wherein the first beamforming network and the antenna array are connected to each other, wherein the first controller, the first terahertz transceiver system, and the first terahertz antenna array system are sequentially connected, and wherein the first terahertz antenna array system is configured to send and receive terahertz waves;
- and
- a communications subsystem, wherein the communications subsystem is configured to communicate with another communications subsystem in which a second APT subsystem is located;
- and
- wherein the first controller is configured to control the first terahertz transceiver system to acquire, point, and track the second APT subsystem using the first terahertz antenna array system and the communications subsystem;
- wherein the first beamforming network comprises a beamforming network that supports the second frequency band and a beamforming network that supports the third frequency band, the antenna array comprises a set of multi-band antenna arrays;
- wherein the first terahertz transceiver that supports the second frequency band, the beamforming network that supports the second frequency band, and the set of multi-band antenna arrays are sequentially connected;
- wherein the second terahertz transceiver that supports the third frequency band, the beamforming network that supports the third frequency band, and the set of multi-band antenna arrays are sequentially connected;
- wherein a center frequency of the second frequency band is less than a center frequency of the third frequency band;
- and
- wherein the first controller is configured to:
- control, in a coarse tracking phase, working of the first terahertz transceiver that supports the second frequency band, wherein the coarse tracking phase is a phase in which tracking precision of the first terahertz transceiver that supports the second frequency band meets an acquisition requirement after an acquisition phase of the first terahertz transceiver that supports the second frequency band starts, or the coarse tracking phase is a phase within preset duration after a start moment of the acquisition phase of the first terahertz transceiver that supports the second frequency band;
- and
- control, in a fine tracking phase, working of the second terahertz transceiver that supports the third frequency band, wherein the fine tracking phase is a phase that is adjacent to and located after the coarse tracking phase in a time sequence.
15 more elements
Dependencies are inferred from the claim text.