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CN-122027056-A - Remote measuring wireless communication action distance calculation method

CN122027056ACN 122027056 ACN122027056 ACN 122027056ACN-122027056-A

Abstract

The application discloses a telemetering wireless communication action distance calculating method. The method comprises the steps of obtaining a free space propagation model, correcting model parameters and calculating the telemetering wireless communication acting distance. The telemetering wireless communication action distance calculation method is a key link for measuring and controlling the design, operation and optimization of a large system, and the relation and decision of the system design and planning, performance evaluation and optimization, safety and reliability guarantee, cost control and resource optimization, fault diagnosis and maintenance have a vital role in ensuring the reliability, effectiveness and economy of the system.

Inventors

  • WANG YIXIN
  • XU XIUCHENG
  • XU XIAOMING

Assignees

  • 上海乾堃空天智能科技有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (7)

  1. 1. A method for calculating a range of a telemetry wireless communication, comprising: acquiring a free space propagation model; Correcting the model parameters; and calculating the telemetric wireless communication action distance.
  2. 2. The method of claim 1, wherein modifying the model parameters comprises modifying using a rice model, an atmospheric absorption model, a polarization matching model, and a two-path model.
  3. 3. The telemetric wireless communication working distance calculation method according to claim 1, wherein the free space propagation model is obtained by the following formula (1); Wherein P t is the transmitting power, G t is the transmitting antenna gain, G r is the receiving antenna gain, P r is the minimum receiving power of the receiving end capable of correctly demodulating signals, lambda is the signal wavelength, M is the engineering margin, and L ∑ is the total loss in the transmission process.
  4. 4. The telemetric wireless communication working distance calculation method as defined in claim 2, wherein the rice model is used to correct multipath interference by the following formula (2), Where A c is the amplitude of the direct signal, K is the Lais factor, representing the ratio of direct signal power to multipath signal power, a i is the amplitude of the ith multipath signal, and N is the number of multipaths.
  5. 5. The telemetric wireless communication working distance calculation method according to claim 2, wherein the correction is performed by using the atmospheric absorption model by the following formula (3); Where L abs ＝k 1 f α1 d+k 2 f α2 h,L abs is the atmospheric absorption loss, f is the signal frequency, h is the average height over the signal propagation path, α1, α2, k 1 ,k 2 are constants related to the atmospheric components and weather conditions.
  6. 6. The method for calculating a distance of interaction for telemetry wireless communication according to claim 2, wherein, Using the polarization matching model for correction by the following formula (4); Wherein m is a polarization factor, the value of which is between 0 and 1, and the polarization factor is obtained through the actual measurement of the variable distance of transmitting and receiving equipment and the analysis of electromagnetic simulation software.
  7. 7. The telemetric wireless communication working distance calculation method according to claim 2, wherein the reflection influence is corrected by using the two-path model by the following formula (5); Where h t is the transmit antenna height and h r is the receive antenna height.

Description

Remote measuring wireless communication action distance calculation method Technical Field The application relates to the technical field of carrier rockets, in particular to a telemetering wireless communication action distance calculating method. Background The telemetering wireless communication action distance calculation is an extremely important basis and premise of measurement and control of a carrier and an aircraft, can optimize the design of a whole heaven-earth measurement and control large system, reasonably select parameters such as transmitting power, transmitting antenna type, gain and the like, reasonably perform ground station arrangement, select receiver sensitivity, receiving antenna polarization mode, gain and the like, ensure that the measurement and control system meets the action distance requirement, and avoid resource waste caused by excessive design. Disclosure of Invention Aiming at the design requirement of the spacecraft measurement and control large system, the application provides a telemetering wireless communication action distance calculation method which comprises the steps of obtaining a free space propagation model, correcting model parameters and calculating telemetering wireless communication action distances. The telemetering wireless communication action distance calculation method is a key link for measuring and controlling the design, operation and optimization of a large system, and the relation and decision of the system design and planning, performance evaluation and optimization, safety and reliability guarantee, cost control and resource optimization, fault diagnosis and maintenance have a vital role in ensuring the reliability, effectiveness and economy of the system. In the telemetering wireless communication working distance calculation method provided by the application, the model parameters are corrected by using a rice model, an atmosphere absorption model, a polarization matching model and a two-path model. In the telemetry wireless communication action distance calculation method provided by the application, a free space propagation model is obtained through the following formula (1); Wherein P t is the transmitting power, G t is the transmitting antenna gain, G r is the receiving antenna gain, P r is the minimum receiving power of the receiving end capable of correctly demodulating signals, lambda is the signal wavelength, M is the engineering margin, and L ∑ is the total loss in the transmission process. In the telemetry wireless communication working distance calculation method provided by the application, the following formula (2) is adopted to correct multipath interference by using a rice model, Where A c is the amplitude of the direct signal, K is the Lais factor, representing the ratio of direct signal power to multipath signal power, a i is the amplitude of the ith multipath signal, and N is the number of multipaths. In the telemetering wireless communication working distance calculation method provided by the application, the following formula (3) is used for correction by using an atmospheric absorption model. Where L abs＝k1fα1d+k2fα2h,Labs is the atmospheric absorption loss, f is the signal frequency, h is the average height over the signal propagation path, α1, α2, k 1,k2 are constants related to the atmospheric components and weather conditions. In the telemetering wireless communication working distance calculation method provided by the application, correction is performed by using a polarization matching model through the following formula (4). Wherein m is a polarization factor, the value of which is between 0 and 1, and the polarization factor is obtained through the actual measurement of the variable distance of transmitting and receiving equipment and the analysis of electromagnetic simulation software. In the telemetry wireless communication working distance calculation method provided by the application, reflection influence is corrected by using a two-path model through the following formula (5). The calculation result obtained by the formula (5) is used as a constraint condition. Where h t is the transmit antenna height and h r is the receive antenna height. Drawings Fig. 1 is a flow chart of a method for telemetric wireless communication range calculation according to some embodiments of the present application. Detailed Description The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application. The application is described in further detail below with reference to the accompanying drawings. The telemetering wireless communication working di