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CN-116505979-B - Quick network construction method of phased array antenna communication system without position information

CN116505979BCN 116505979 BCN116505979 BCN 116505979BCN-116505979-B

Abstract

The invention discloses a rapid networking method of a phased array antenna communication system without position information, which comprises the steps of configuring omni-directional spherical wave beams of a phased array antenna, wherein antenna array elements are all U-shaped groove rectangular single feed point patch antennas, forming wave beams formed by the antenna array surfaces in horizontal and pitching planes, performing wave beam forming on spread spectrum low-speed data wave form networking, modulating longitude and latitude high position information only comprising 64Bit by using a spread spectrum sequence by using a CDMA mode, widening signal bandwidth transmission, adopting a frame structure provided with fixed time slots comprising omni-directional wave beam broadcasting networking communication and dynamic time slots of directional wave beam business communication, initiating networking nodes to achieve omni-directional communication by configuring antenna wave beams in networking stage, configuring directional communication auxiliary omni-directional communication networking for other nodes, completing rapid networking within 1s, and ensuring that the network is stable and reliable.

Inventors

  • ZHANG WEI
  • WANG XIAOWEI

Assignees

  • 南京熊猫汉达科技有限公司

Dates

Publication Date
20260505
Application Date
20230506

Claims (10)

  1. 1. A method for rapidly networking a phased array antenna communication system without location information, comprising: The array surface of the active phased array antenna comprises a plurality of antenna array elements, each antenna array element adopts a U-shaped groove rectangular single-feed point patch antenna, each antenna array element corresponds to one path of amplitude and phase adjusting device, and the wave beam formed by the antenna array surface is formed in the horizontal and pitching planes by adjusting the amplitude and phase control parameters of each path of the amplitude and phase adjusting device; The spread spectrum low-speed data waveform network access design adopts a network access spread spectrum waveform design based on a CDMA mode, modulates longitude and latitude high position information only comprising 64Bit by using a spread spectrum sequence, and widens signal bandwidth transmission; The network construction design comprises the steps of initiating a network construction node to achieve omnidirectional communication by configuring antenna beams in a network construction stage, broadcasting network access invitation information to neighbor position nodes, configuring directional communication to assist omnidirectional communication network access by other nodes, completing rapid network construction within 1s for nodes within a 1-hop communication range, informing the state and position information of network nodes which are already accessed to the network in a 2-hop neighbor discovery stage by using network omnidirectional broadcasting time slots, completing neighbor discovery by directly exchanging information through a directional communication link, and completing network access according to a flow.
  2. 2. The method for rapid networking of a phased array antenna communication system without location information of claim 1, wherein the phased array antenna is configured with an omni-directional spherical beam, wherein: the aerial installation platform needs 2 semicircular array planes or 4 plane array planes to realize the coverage of the omni-directional spherical wave beams, and the ground installation platform needs 1 elliptical array plane or 3 plane array planes to realize the coverage of the omni-directional hemispherical wave beams; the single-feed point patch antenna adopts coaxial pin feed, energy is fed into the microstrip square patch on the medium substrate through the pin of the SSMP connector at the output end of the transmitting component, and the working frequency is widened by adopting a U-shaped groove; The number of array elements of the ground elliptical antenna is 256, a single antenna can realize hemispherical beam coverage of 360 degrees horizontally and 0-90 degrees in pitching, and a pair of antennas with 128,2 array elements in the air can realize omnidirectional spherical beam coverage of 360 degrees horizontally and 60 degrees in pitching.
  3. 3. The method for rapidly networking a phased array antenna communication system without location information according to claim 1, wherein the spread spectrum low speed data waveform networking design comprises a spread spectrum design, specifically comprising: in the spread spectrum code distribution table, recording the unified broadcast spread spectrum code word of network initialization and the spread spectrum code word information of each node, the spread spectrum code distributed by each node is unique in the whole network; And after receiving the broadcast network access invitation, the non-network access node replies a network access application message by adopting the respective spreading codes, and the network access node which is not participated in communication already receives the broadcast network access invitation information by scanning the spreading codes in the distribution table, so that the nodes in the network can receive the network access request.
  4. 4. A method for rapidly constructing a phased array antenna communication system without location information according to claim 3, wherein the 64bit information transmitted in the broadcast frame is 1/4 coded and QPSK modulated to form 128 symbols, and a synchronization sequence is inserted to generate 257 modulation symbols, each of which is spread symbol by symbol using a spreading sequence with a spreading sequence length of 3000.
  5. 5. The method for rapidly networking a phased array antenna communication system without location information according to claim 1, wherein the spread spectrum low speed data waveform networking design comprises a frame structure design, specifically comprising: The waveform frame structure is divided into 128 subframes every 1 second, the time length occupied by each subframe is 7.8125ms, the protection time slot length is 500us, and the waveform frame structure is used for antenna beam switching time length and air transmission time delay.
  6. 6. The method for rapid networking of a phased array antenna communication system without location information of claim 5, wherein the waveform frame structure is specifically as follows: For the broadcast frame, the antenna transmits omnidirectionally and receives omnidirectionally, and when the frame structure is designed, the broadcast frame occupies two time slots and transmits 64 bits of effective data; For the response frame, the antenna directional transmission and the omnidirectional reception, and the wave form has high channel rate relative to the broadcast frame, and the structure of the response frame is specially designed to occupy a short time slot; and the 19 th and 73 th are acknowledgement frames, the maximum transmission of the acknowledgement frames is 3200bit, and for the acknowledgement frames, the antenna transmits omnidirectionally and receives directionally, the channel rates of the acknowledgement frames and the acknowledgement frame waveforms are consistent, and a long time slot is occupied.
  7. 7. The method for quickly setting up a phased array antenna communication system without location information according to claim 6, wherein the 1 st time slot of network access is used for broadcasting, the new node replies to request for network access in the 16 th time slot, the node transmitting the broadcasting transmits a confirmation frame in the 19 th time slot, and the three frames are dedicated time sequences for network access control; Other time slots in the frame structure are network protocols and service communication frames, dynamic allocation, directional antenna transmission and directional reception, waveform transmission with different rates is selected according to services, the highest rate is 64Mbps, the lowest rate is 8Mbps, the data transmission rate is adjusted through different spread spectrum ratios, and the rate of a receiving end is self-adaptive to receive.
  8. 8. The method for rapid networking of a phased array antenna communication system without location information of claim 1, wherein the networking design is one of: In the network establishment stage, the starting time points of the network initialization stage of each node are different, the node establishes a link with another node through an omnidirectional monitoring channel or sending a broadcast position message, and if the link can be established with any node, the network is considered to be necessary and possible to be established; after any node is started, firstly monitoring a plurality of frames, if position messages broadcast by other nodes are received in the 1 st time slot, replying network topology messages in a specified time slot, solving conflicts by a physical layer in a spread spectrum mode, if no messages are received after the monitoring is finished, starting network access invitations in the 1 st time slot in an omni-directional low-speed broadcasting position messages, selecting omni-directional or directional network access application replies according to distances after the other starting nodes receive the network access invitations, solving conflicts by the physical layer in the spread spectrum mode, and replying after a plurality of time slots are separated based on the limits of processing delay and propagation delay of receiving and transmitting signals when the broadcast position messages are received in the 1 st time slot.
  9. 9. The method for quickly constructing a network of a phased array antenna communication system without position information according to claim 8, wherein the effective data of the position message does not exceed 72 bits, the effective data comprises an ID number of 8 bits of the node and a coordinate position of 64 bits, the specific accurate coordinates of the broadcast node are known after the neighbor node in one hop range receives the position message, the network topology message comprises the ID number and the position coordinates of the node and the ID number and the position coordinates of the one hop neighbor node found by the node, the node notifies the known whole network topology by means of omni-directional transmission or directional transmission, and the broadcast node acquires other node positions for further neighbor discovery handshake after receiving the network topology message.
  10. 10. The method for quickly setting up a phased array antenna communication system without location information according to claim 9, wherein after the network is established, the network nodes operate in the directional transmitting and directional receiving antenna modes in other time slots, the nodes mutually announce the network topology, a timer is started, and when the timer expires, the network topology enters a normal communication stage without change.

Description

Quick network construction method of phased array antenna communication system without position information Technical Field The invention relates to the technical field of electronic communication, in particular to a rapid networking method of a phased array antenna communication system without position information. Background For a communication system adopting a phased array antenna, when a plurality of members distributed in a space are to be built into a centerless network under the condition of no position information, an active phased array antenna is often configured into a directional high-gain and narrow-beam mode to acquire high gain and realize long-distance communication coverage, but because of the narrow single beam width, the beam coverage has the characteristic of directionality, and can not simultaneously transmit and receive communication with a plurality of members distributed in the space, and the directional beam networking is limited. When such networking applications, a narrow beam scanning communication scheme is generally adopted, and because of residence time of each narrow beam, a great deal of time is required for realizing spherical beam coverage by narrow beam scanning, resulting in long network setup time, which is usually on the order of minutes. Disclosure of Invention The invention aims to provide a rapid network construction method of a phased array antenna communication system without position information, which is characterized in that phased array antennas of all nodes are configured into a low-gain omnidirectional beam mode in a network access stage, and network access invitation broadcast information only comprising geographic positions is transmitted by adopting a low-speed data transmission network waveform design, so that rapid network construction is realized. The technical scheme for realizing the purpose of the invention is that the rapid networking method of the phased array antenna communication system without the position information comprises the following steps: The array surface of the active phased array antenna comprises a plurality of antenna array elements, each antenna array element adopts a U-shaped groove rectangular single-feed point patch antenna, each antenna array element corresponds to one path of amplitude and phase adjusting device, and the wave beam formed by the antenna array surface is formed in the horizontal and pitching planes by adjusting the amplitude and phase control parameters of each path of the amplitude and phase adjusting device; The spread spectrum low-speed data waveform network access design adopts a network access spread spectrum waveform design based on a CDMA mode, modulates longitude and latitude high position information only comprising 64Bit by using a spread spectrum sequence, and widens signal bandwidth transmission; The network construction design comprises the steps of initiating a network construction node to achieve omnidirectional communication by configuring antenna beams in a network construction stage, broadcasting network access invitation information to neighbor position nodes, configuring directional communication to assist omnidirectional communication network access by other nodes, completing rapid network construction within 1s for nodes within a 1-hop communication range, informing the state and position information of network nodes which are already accessed to the network in a 2-hop neighbor discovery stage by using network omnidirectional broadcasting time slots, completing neighbor discovery by directly exchanging information through a directional communication link, and completing network access according to a flow. Further, the phased array antenna omni-directional spherical beam configuration, wherein: the aerial installation platform needs 2 semicircular array planes or 4 plane array planes to realize the coverage of the omni-directional spherical wave beams, and the ground installation platform needs 1 elliptical array plane or 3 plane array planes to realize the coverage of the omni-directional hemispherical wave beams; the single-feed point patch antenna adopts coaxial pin feed, energy is fed into the microstrip square patch on the medium substrate through the pin of the SSMP connector at the output end of the transmitting component, and the working frequency is widened by adopting a U-shaped groove; The number of array elements of the ground elliptical antenna is 256, a single antenna can realize hemispherical beam coverage of 360 degrees horizontally and 0-90 degrees in pitching, and a pair of antennas with 128,2 array elements in the air can realize omnidirectional spherical beam coverage of 360 degrees horizontally and 60 degrees in pitching. Further, the spread spectrum low-speed data waveform network entry design comprises a spread spectrum design, and the method specifically comprises the following steps: in the spread spectrum code distribution table, recording the unified broadcast