Earth-moon space measurement and control communication satellite network system

Abstract

The invention provides an earth-moon space measurement and control communication satellite network system. The earth-moon space measurement and control communication satellite network system comprises node satellites and hotspot satellites, a continuous measurement and communication integrated link is established between the node satellites and the hotspot satellites in the same target area; a continuous measurement and communication integrated link is established between the node satellites of the adjacent target areas; the node satellites and a plurality of spacecraft users in the adjacent target area establish a multi-user time division measurement communication integrated link; the hotspot satellites and a plurality of spacecraft users in the same target area establish a multi-user simultaneous continuous measurement and communication integrated link; and a continuous measurement and communication integrated link is established between at least one node satellite and the ground measurement and control station or the earth measurement and control relay satellite. Thus, measurement and control communication and orbit determination of the earth-moon space user spacecraft are supported, the defects of an existing ground measurement and control system and a measurement and control relay satellite on the coverage area of earth-moon space measurement and control communication service and the user capacity are overcome, and the constraint of the user spacecraft measurement and control communication terminal configuration antenna pointing is reduced.

Description

Technical Field

[0001] The present invention relates to the field of satellite measurement, control and communication technology, and in particular to a terrestrial-lunar space measurement, control and communication satellite network system. Background Art

[0002] With the gradual advancement of space activities in the cislunar space represented by the International Lunar Research Station project and the Artemis project, more and more space missions will be carried out in the cislunar space. Measurement, control and communication support for the cislunar space is crucial to the success and high-quality completion of the mission.

[0003] At present, the existing technology mainly uses satellite relay communication methods to make up for the lack of ground tracking and control network's support capabilities for tracking and control communications of space missions in the Earth-Moon space. This method selects a specific type of orbit to deploy relay communication satellites according to the area of ​​user activities, so that the relay communication satellite can have one antenna pointing to the ground tracking and control station during all or specific periods of time, and the other antenna pointing to the user providing tracking and control communication services, to complete the relay communication transmission between user information and the ground. For example, the Queqiao-1 relay communication satellite is deployed in the L2 point halo orbit of the Earth-Moon libration point, and the Queqiao-2 relay communication satellite is deployed in the lunar elliptical frozen orbit, providing relay communication services to the back of the moon where the Chang'e-4 and Chang'e-6 lunar probes are located. However, the main problem with this method is that each relay communication satellite can only support point-to-point communication services for a single or single-region user target, and the area where users can be served is closely related to the characteristics of the relay communication satellite node orbit, which is not suitable for service scenarios where users are relatively dispersed on the moon and the Earth-Moon space or multiple users are distributed in a certain area. Since the relay communication satellite's own orbit is determined by the ground measurement and control system, its own orbit determination accuracy and real-time performance are low, and the accuracy of measurement information between the satellite and the user spacecraft is limited, making it difficult to provide measurement and control orbit determination services.

[0004] The existing patent (CN202311801602.2) discloses a method for communication between Earth-Moon spacecraft based on the Tianlian relay satellite system. This method adds a sky antenna to the Earth relay satellite to communicate with the ground-based deep space tracking and control network. However, due to the long distance between the Earth relay communication satellite and the Earth-Moon spacecraft, the general relay communication satellite antenna diameter is 10 to 15 times smaller than the ground-based deep space tracking and control station antenna diameter. Users need to configure a directional tracking and control communication antenna to establish a link with it, which imposes constraints on the user's antenna pointing; and this method does not involve tracking and control orbit determination services.

[0005] The existing patent (CN202011059993.1) discloses a satellite navigation and positioning method in the cis-moon space. The method selects and deploys satellites from orbit types such as the lunar near-linear orbit, the cis-moon long-distance retrograde orbit, the circular orbit around the moon, the cis-moon libration point L4 / L5, and the L1 / L2 halo orbit in the cis-moon space to form a constellation. The user's spatial position can be obtained in real time based on the geometric solution method, which can meet the navigation and positioning coverage requirements within the entire cis-moon space. However, due to the long distance between the cis-moon space, the propagation distance of the navigation signal has been expanded by 10 to 50 times compared with the Earth GNSS (Global Navigation Satellite System). At the same time, users need to install omnidirectional antennas to receive navigation signals broadcast by satellites in different regions of the cis-moon space when using the geometric positioning and navigation method. The antenna receiving gain is small, and the satellite microwave amplifier that broadcasts the navigation signal is expensive. In addition, the method does not involve measurement and control communication services.

[0006] Therefore, there is an urgent need for a method that can effectively solve the above-mentioned prior art problems. Summary of the invention

[0007] The purpose of the present invention is to provide a terrestrial-lunar space tracking and control communication satellite network system that can support terrestrial-lunar space user spacecraft tracking and control communication and orbit determination, make up for the shortcomings of existing ground tracking and control systems and tracking and control relay satellites in the coverage area and user capacity of terrestrial-lunar space tracking and control communication services, and reduce the constraints on the antenna pointing configuration of user spacecraft tracking and control communication terminals.

[0008] In order to achieve the above-mentioned purpose, the present invention provides an Earth-Moon space measurement and control communication satellite network system, comprising at least one node satellite and at least one hotspot satellite deployed in each target area respectively, wherein the target area is the Earth-Moon libration points L3, L4, L5 and the Earth-Moon space area near the moon; a continuous measurement and communication integrated link is established between the node satellite and the hotspot satellite in the same target area; a continuous measurement and communication integrated link is established between the node satellites in adjacent target areas; the node satellite and several spacecraft users in adjacent target areas establish a multi-user time-division measurement and communication integrated link to form a first access measurement and control network; the hotspot satellite and several spacecraft users in the same target area establish a multi-user simultaneous continuous measurement and communication integrated link to form a second access measurement and control network; and at least one of the node satellites establishes a continuous measurement and communication integrated link with a ground measurement and control station or an earth measurement and control relay satellite.

[0009] Optionally, the node satellite is equipped with a phased array antenna for establishing a multi-user time-division integrated measurement and communication link with several spacecraft users in different Earth-Moon space regions to form a first access measurement and control network.

[0010] Optionally, the hotspot satellite is equipped with an omnidirectional or near-omnidirectional phased array antenna for establishing a multi-user simultaneous measurement communication integrated link with several spacecraft users in the same target area to form a second access measurement and control network.

[0011] Optionally, the system determines the target node satellite for establishing a link with the ground tracking and control station or the earth tracking and control relay satellite based on the visibility relationship between the satellite operation and the ground tracking and control station or the earth relay satellite, and establishes a link with the ground tracking and control station or the earth tracking and control relay satellite through the target node satellite to build a satellite-to-ground backbone tracking and control network.

[0012] Optionally, the hotspot satellite is also used to establish a link with spacecraft users in different target areas that are equipped with high-gain directional tracking and control antennas and / or high-power amplifiers.

[0013] Optionally, at least one of the node satellites and at least one of the hotspot satellites in the same target area are integrated on a node-hotspot integrated satellite; and the node-hotspot integrated satellite is equipped with an omnidirectional or near-omnidirectional coverage antenna to simultaneously establish a continuous measurement and communication integrated link with several spacecraft users in the same target area; and measurement and communication integrated links are established between different node-hotspot integrated satellites.

[0014] Optionally, at least one of the node hotspot integrated satellites establishes a continuous integrated measurement and communication link with a ground measurement and control station or an earth measurement and control relay satellite.

[0015] The terrestrial-lunar space tracking and control communication satellite network system described in the present invention can provide services to spacecraft users operating in the terrestrial-lunar space, such as on the lunar surface, near the moon, in orbits of various regions of the terrestrial-moon libration point, and in the terrestrial-moon-moon-terrestrial transfer. The present invention achieves a significant increase in the overall user capacity and concurrent user capacity compared to general tracking and control relay satellite technology by adopting simultaneous multi-user services provided by hotspot satellites in the same region and time-sharing multi-user services provided by node satellites in different regions. Since the relative distance between the hotspot satellite and the users in the same region is small, tracking and control communication support can be achieved for the user spacecraft configured with an omnidirectional antenna, providing users in the terrestrial-lunar space with a high-quality tracking and control communication system. Guaranteed measurement and control communication services are achieved; in addition, the satellite-to-satellite link establishment of the present invention can obtain rich satellite inter-satellite measurement data, and combined with the orbital dynamics characteristics of the asymmetric gravitational field of the Earth-Moon space, it can achieve accurate orbit determination of each satellite in the measurement and control communication satellite network system, which is equivalent to the system's satellite as a space-based measurement and control communication station, whose station location can be more accurately calibrated, and thus has the ability to provide orbit determination services for user spacecraft; it can also reduce system complexity and system launch and deployment costs by aggregating node satellite functions and hotspot satellite functions into node-hotspot integrated satellites, under the premise that satellite engineering is feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the cis-lunar space region in which the cis-lunar space tracking and control communication satellite network system provided by an embodiment of the present invention is applied is shown;

[0017] Figure 2 A schematic diagram showing the hotspot satellite service of the Earth-Moon space tracking and control communication satellite network system provided by an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram showing the node satellite service of the Earth-Moon space tracking and control communication satellite network system provided by an embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram of the node hotspot integrated satellite service of the Earth-Moon space tracking and control communication satellite network system provided by another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] It should be noted that references to "one embodiment", "embodiment", "example embodiment", etc. in this specification refer to the embodiment described, which may include specific features, structures or characteristics, but not every embodiment must include these specific features, structures or characteristics. In addition, such expressions do not refer to the same embodiment. Furthermore, when describing specific features, structures or characteristics in conjunction with an embodiment, whether or not there is an explicit description, it has been shown that it is within the knowledge of those skilled in the art to combine such features, structures or characteristics into other embodiments.

[0022] In addition, certain words are used in the specification and subsequent claims to refer to specific components or parts. Those with ordinary knowledge in the relevant field should understand that manufacturers can use different nouns or terms to refer to the same component or part. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in functions of components or parts as the criteria for distinction. "Including" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to".

[0023] Embodiment 1

[0024] Figure 2-3The terrestrial-lunar space tracking and control communication satellite network system provided by the first embodiment of the present invention is shown. The system is specifically used to support spacecraft user tracking and control communication and orbit determination in the terrestrial-lunar space, including at least one node satellite and at least one hotspot satellite deployed in each target area. This embodiment is described by taking the deployment of one node satellite and one hotspot satellite in each target area as an example. Of course, in other examples, the number of node satellites and hotspot satellites in the target area is not limited; wherein the target area is a total of four terrestrial-lunar space areas, namely, the L3 area, the L4 area, the L5 area and the near-moon area of ​​the terrestrial-lunar libration point. For specific area distribution, see Figure 1 As shown; a continuous measurement and communication integrated link is established between the node satellite and the hotspot satellite in the same target area; a continuous measurement and communication integrated link is established between the node satellites in adjacent target areas; a multi-user time-division measurement and communication integrated link is established between the node satellite and several spacecraft users in adjacent target areas to form a first access measurement and control network; a multi-user simultaneous continuous measurement and communication integrated link is established between the hotspot satellite and several spacecraft users in the same target area to form a second access measurement and control network; and at least one node satellite establishes a continuous measurement and communication integrated link with a ground measurement and control station or an earth measurement and control relay satellite.

[0025] The L3 region of this embodiment includes node satellite 1 and hotspot satellite 1, the L4 region includes node satellite 2 and hotspot satellite 2, the L5 region includes node satellite 4 and hotspot satellite 4, and the near-moon region includes node satellite 3 and hotspot satellite 3.

[0026] The establishment of a continuous measurement and communication integrated link between the node satellite and the hotspot satellite in the same target area is specifically as follows: a continuous measurement and communication integrated link is established between node satellite 1 and hotspot satellite 1. The continuous measurement and communication integrated link is a comprehensive system link that can simultaneously realize measurement and communication functions without interruption, that is, the continuous measurement and communication integrated link has communication and two-way measurement capabilities. Correspondingly, a continuous measurement and communication integrated link is also established between node satellite 2 and hotspot satellite 2, a continuous measurement and communication integrated link is also established between node satellite 3 and hotspot satellite 3, and a continuous measurement and communication integrated link is also established between node satellite 4 and hotspot satellite 4, thereby constructing a "same-region star-to-star" backbone measurement and control network.

[0027] Specifically, continuous integrated measurement and communication links are established between the node satellites in adjacent target areas: the node satellite 1 in the L3 area establishes continuous integrated measurement and communication links with the node satellite 2 in the adjacent L4 area and the node satellite 4 in the adjacent L5 area, and the node satellite 3 in the near-moon area also establishes continuous integrated measurement and communication links with the node satellite 2 in the adjacent L4 area and the node satellite 4 in the adjacent L5 area, thereby constructing a ring-shaped "inter-region star-to-star" backbone measurement and control network.

[0028] See also Figure 3 The node satellite establishes a multi-user time-division measurement and communication integrated link with several spacecraft users in the adjacent target area to form a first access measurement and control network. Specifically, the node satellite 1 in the L3 area establishes a multi-user time-division measurement and communication integrated link with spacecraft users 1, 2, ..., N in the adjacent L4 area to form an access measurement and control network to provide measurement and control communication services for spacecraft users; the node satellite 2 in the L4 area establishes a multi-user time-division measurement and communication integrated link with spacecraft users 1 ..., N in the adjacent near-moon area to form an access measurement and control network to provide measurement and control communication services for spacecraft users; the node satellite 3 in the near-moon area establishes a multi-user time-division measurement and communication integrated link with spacecraft users 1 ..., N in the adjacent L5 area to form an access measurement and control network to provide measurement and control communication services for spacecraft users. User 1, spacecraft user 2…spacecraft user N establish a multi-user time-division measurement and communication integrated link, forming an access measurement and control network to provide measurement and control communication services for spacecraft users; of course, in other examples, the node satellite 1 in the L3 area may establish a multi-user time-division measurement and communication integrated link with the spacecraft user in the L5 area, the node satellite 4 in the L5 area may establish a multi-user time-division measurement and communication integrated link with the spacecraft user in the near-moon area, the node satellite 3 in the near-moon area may establish a multi-user time-division measurement and communication integrated link with the spacecraft user in the L4 area, and the node satellite 2 in the L4 area may establish a multi-user time-division measurement and communication integrated link with the spacecraft user in the L3 area. That is, the node satellite establishes a multi-user time-division measurement and communication integrated link with N spacecraft users in different Earth-Moon space areas, completes two-way measurement and information transmission between the node satellite and the user, and the spacecraft user accesses the measurement and control network to provide measurement and control communication services for the user.

[0029] See also Figure 2, the hotspot satellite establishes a multi-user simultaneous measurement communication integrated link with several spacecraft users in the same target area to form a second access measurement and control network. Specifically: a multi-user simultaneous continuous measurement communication integrated link is established between the hotspot satellite 1 in the L3 area and users 1, user 2...user N in the same area to form an access measurement and control network to provide measurement and control communication services for spacecraft users; a multi-user simultaneous continuous measurement communication integrated link is established between the hotspot satellite 2 in the L4 area and users 1, user 2...user N in the same area to form an access measurement and control network to provide measurement and control communication services for spacecraft users; a multi-user simultaneous continuous measurement communication integrated link is established between the hotspot satellite 3 in the near-moon area and users 1, user 2...user N in the same area to form an access measurement and control network to provide measurement and control communication services for spacecraft users; a multi-user simultaneous continuous measurement communication integrated link is established between the hotspot satellite 4 in the L5 area and users 1, user 2...user N in the same area to form an access measurement and control network to provide measurement and control communication services for spacecraft users. That is, each hotspot satellite in the same Earth-Moon space region establishes an integrated multi-user simultaneous measurement and communication link with N spacecraft users in the same region, completing two-way measurement and information transmission between the hotspot satellite and users. Spacecraft users access the measurement and control network to provide measurement and control communication services for users.

[0030] In specific implementation, the node satellite is equipped with a phased array antenna, which is used to establish a multi-user time-division measurement and communication integrated link with several spacecraft users in different Earth-Moon space regions to form a first access measurement and control network. The hotspot satellite is equipped with an omnidirectional or near-omnidirectional phased array antenna, which is used to establish a multi-user simultaneous continuous measurement and communication integrated link with several spacecraft users in the same target area to form a second access measurement and control network.

[0031] The system of this embodiment determines the target node satellite to be linked with the ground tracking and control station or the earth tracking and control relay satellite according to the visibility relationship between the satellite operation and the ground tracking and control station or the earth relay satellite, and establishes a link with the ground tracking and control station or the earth tracking and control relay satellite through the target node satellite to build a satellite-to-ground backbone tracking and control network. Specifically, in this embodiment, according to the visibility relationship between the satellite operation and the ground tracking and control station or the earth relay satellite, the node satellites are linked with the ground tracking and control station or the earth relay satellite in turn to build a "star-to-ground" backbone tracking and control network; the figure shows the state of the node satellite 1 and the ground tracking and control station establishing a continuous measurement and communication integrated link. At this time, the measurement and control communication information of the earth-moon space tracking and control communication satellite network system is gathered in the node satellite 1 and the ground interaction. The measurement and communication integrated links are established between the node satellites, between the node satellites and the hotspot satellites, and between the node satellites and the ground. Combined with the orbital dynamics characteristics of the asymmetric gravitational field of the earth-moon space and the inter-satellite and satellite-to-ground measurement data, the orbits of the hotspot satellites and node satellites of the tracking and control communication satellite network are accurately determined.

[0032] The hotspot satellite of this embodiment is also used to establish a link with spacecraft users in different target areas that are equipped with high-gain directional tracking and control antennas and / or high-power amplifiers. That is, when the tracking and control communication terminal of the cis-lunar spacecraft user is equipped with a high-gain directional tracking and control antenna and / or a high-power amplifier, the tracking and control communication satellite network hotspot satellite can also provide tracking and control communication services for other spacecraft users located in different cis-lunar space areas.

[0033] Embodiment 2

[0034] Figure 4 The earth-moon space measurement and control communication satellite network system provided by the second embodiment of the present invention is shown. The difference between the second embodiment and the first embodiment is that: the present embodiment integrates at least one node satellite and at least one hotspot satellite in the same earth-moon space region into a node-hotspot integrated satellite, that is, at least one node satellite and at least one hotspot satellite in the same target area are integrated into a node-hotspot integrated satellite; and the node-hotspot integrated satellite is equipped with an omnidirectional or near-omnidirectional coverage antenna to simultaneously establish a continuous measurement communication integrated link with several spacecraft users in the same target area; and a measurement communication integrated link is established between different node-hotspot integrated satellites. The node-hotspot integrated satellite is equipped with an omnidirectional or near-omnidirectional coverage antenna on the basis of the node satellite function, and simultaneously establishes a continuous measurement communication integrated link with multiple spacecraft users in the same earth-moon space region. That is, the present embodiment integrates the node satellite and the hotspot satellite in the same earth-moon space region into one, so that the node-hotspot integrated satellite simultaneously has the functions of the hotspot satellite and the node satellite in the first embodiment.

[0035] At least one node hotspot integrated satellite establishes a continuous measurement and communication integrated link with a ground measurement and control station or an earth measurement and control relay satellite.

[0036] Specifically, this embodiment deploys a node hotspot integrated satellite in each of the four Earth-Moon space regions, that is, the Earth-Moon space measurement and control communication satellite network system of this embodiment is specifically composed of four node hotspot integrated satellites. Continuous measurement and communication integrated links are established between the node hotspot integrated satellites in adjacent regions, which have communication and two-way measurement capabilities, forming a ring-shaped "different-region star-to-star" backbone measurement and control network. In addition, according to the visibility relationship between the satellite operation and the ground measurement and control station or the earth relay satellite, the node hotspot integrated satellite establishes a link with the ground measurement and control station or the earth relay satellite in turn to build a "star-to-earth" backbone measurement and control network. Figure 4 The figure shows the state of establishing a continuous link between the node hotspot integrated satellite 1 and the earth relay satellite. At this time, the measurement and control communication information of the Earth-Moon space measurement and control communication satellite network system is gathered at the node hotspot integrated satellite 1 and transmitted to the earth relay satellite, and then interacts with the ground.

[0037] Integrated measurement and communication links have been established between node-hotspot integrated satellites and Earth tracking and control relay satellites, and between node-hotspot integrated satellites. The orbital dynamic characteristics of the asymmetry of the gravitational field in the Earth-Moon space and inter-satellite measurement data are combined to accurately determine the satellite orbits of the tracking, control and communication network system.

[0038] The node hotspot integrated satellite establishes continuous measurement and communication integrated links with multiple spacecraft users in the same area at the same time, and also establishes time-division measurement and communication integrated links with spacecraft users in different areas, completing two-way measurement and information transmission with users, forming an access measurement and control network, and providing measurement and control communication services to users.

[0039] In summary, the Earth-Moon space tracking and control communication satellite network system described in the present invention can provide services to spacecraft users operating in the Earth-Moon space, such as on the lunar surface, near the moon, in orbits of various regions of the Earth-Moon libration point, and in Earth-Moon-Moon-Earth transfer. The present invention achieves a significant increase in the overall user capacity and concurrent user capacity compared to general tracking and control relay satellite technology by adopting simultaneous multi-user services provided by hotspot satellites in the same region and time-sharing multi-user services provided by node satellites in different regions. Since the relative distance between the hotspot satellite and the users in the same region is small, tracking and control communication support can be achieved for the user spacecraft configured with omnidirectional antennas, providing a new service for the Earth-Moon space. The users can realize the guaranteed measurement and control communication service; moreover, the satellite-to-satellite link establishment of the present invention can obtain rich satellite inter-satellite measurement data, and combined with the orbital dynamic characteristics of the asymmetric gravitational field of the Earth-Moon space, it can realize the precise orbit determination of each satellite in the measurement and control communication satellite network system, which is equivalent to the satellite of the system as a space-based measurement and control communication station, and its station location can be more accurately calibrated, thereby having the ability to provide orbit determination services for user spacecraft; the node satellite function and the hotspot satellite function can be aggregated into a node-hotspot integrated satellite, under the premise that the satellite engineering is feasible, to reduce the system complexity and the system launch and deployment cost.

[0040] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A satellite network system for measuring and controlling communications in Earth-Moon space, characterized in that: It includes at least one node satellite and at least one hotspot satellite deployed in each target area respectively, wherein the target areas are the Earth-Moon libration points L3, L4, L5 and the Earth-Moon space area near the moon; a continuous measurement and communication integrated link is established between the node satellite and the hotspot satellite in the same target area; a continuous measurement and communication integrated link is established between the node satellites in adjacent target areas; the node satellite and several spacecraft users in adjacent target areas establish a multi-user time-division measurement and communication integrated link to form a first access measurement and control network; the hotspot satellite and several spacecraft users in the same target area establish a multi-user simultaneous continuous measurement and communication integrated link to form a second access measurement and control network; and at least one of the node satellites establishes a continuous measurement and communication integrated link with a ground measurement and control station or an earth measurement and control relay satellite.

2. The Earth-Moon space tracking and control communication satellite network system according to claim 1, characterized in that: The node satellite is equipped with a phased array antenna for establishing a multi-user time-division integrated measurement and communication link with a number of spacecraft users in different Earth-Moon space regions to form a first access measurement and control network.

3. The Earth-Moon space tracking and control communication satellite network system according to claim 1, characterized in that: The hotspot satellite is equipped with an omnidirectional or near-omnidirectional phased array antenna for establishing a multi-user simultaneous measurement communication integrated link with several spacecraft users in the same target area to form a second access measurement and control network.

4. The Earth-Moon space tracking and control communication satellite network system according to claim 1, characterized in that: The system determines the target node satellite to establish a link with the ground tracking and control station or the earth tracking and control relay satellite based on the visibility relationship between the satellite operation and the ground tracking and control station or the earth tracking and control relay satellite, and establishes a link with the ground tracking and control station or the earth tracking and control relay satellite through the target node satellite to build a satellite-to-ground backbone tracking and control network.

5. The Earth-Moon space tracking and control communication satellite network system according to claim 1, characterized in that: The hotspot satellite is also used to establish a link with spacecraft users in different target areas that are equipped with high-gain directional tracking and control antennas and / or high-power amplifiers.

6. The Earth-Moon space tracking and control communication satellite network system according to claim 1, characterized in that: At least one of the node satellites and at least one of the hotspot satellites in the same target area are integrated on a node-hotspot integrated satellite; and the node-hotspot integrated satellite is equipped with an omnidirectional or near-omnidirectional coverage antenna to simultaneously establish a continuous measurement and communication integrated link with several spacecraft users in the same target area; and measurement and communication integrated links are established between different node-hotspot integrated satellites.

7. The Earth-Moon space tracking and control communication satellite network system according to claim 6, characterized in that: At least one of the node hotspot integrated satellites establishes a continuous measurement and communication integrated link with a ground measurement and control station or an earth measurement and control relay satellite.

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