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Aeronautical telemetering channel selection method

A channel and transmit channel technology, applied in the field of communications, can solve problems such as failure to work normally, inability to select two telemetry channels, interruption of telemetry signals, etc., to achieve the effect of improving quality and reliability, avoiding frequent channel switching, and avoiding loss.

Active Publication Date: 2021-12-21
XIAN SPACE STAR TECH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the antennas of the aircraft measurement and control system are mostly omnidirectional antennas, and the measurement and control baseband terminal cannot obtain the attitude information of the aircraft, the telemetry terminal of the aircraft cannot make a selection of the downlink telemetry data channel for the two telemetry channels
The telemetry terminal is likely to select a telemetry channel with poor communication quality for downlink data transmission, which will cause the telemetry signal to be interrupted and fail to work normally

Method used

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  • Aeronautical telemetering channel selection method
  • Aeronautical telemetering channel selection method
  • Aeronautical telemetering channel selection method

Examples

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Embodiment 1

[0026] refer to figure 2 , the selection method of a kind of aerial telemetry channel that the present invention proposes, concrete implementation steps include as follows:

[0027] Step 1: Deploy at least two omnidirectional transceiver antennas in the target aircraft, and each antenna serves as a downlink telemetry transmission channel.

[0028] Among them, deploy at least two sets of omnidirectional transmitting and receiving antennas in the target aircraft. If there are two pairs, set them at any two non-adjacent positions of the aircraft; if there are more than two pairs, the number of antennas is 2. n And n is a positive integer greater than 1, and they are scattered and arranged in various parts of the fuselage of the aircraft.

[0029] Step 2: The ground telemetry station transmits the characteristic signal RS to the target aircraft through the uplink channel with T0 as the period; the characteristic signal here includes at least the time domain reference signal, the...

Embodiment 2

[0052] Refer to attached figure 1 , taking the telemetry terminal with two antennas and two channels as an example, two omnidirectional transceiver antennas are deployed on the belly and the back of the aircraft respectively. When maneuvering or special attitude movement, when the back faces the ground, the antenna on the back of the machine is used as a transmission channel to send telemetry data; in this scenario, the selection method of the aerial telemetry channel proposed by the present invention is used, and the specific steps are as follows:

[0053] Step A: use each pair of antennas as a downlink telemetry transmission channel, i.e. the first channel C1 and the second channel C2;

[0054] Step B: The ground telemetry station transmits a reference signal RS to the target aircraft on the uplink measurement channel with a period of T0;

[0055] Step C: The airborne measurement and control terminal measures the channels C1 and C2 respectively at time t1, and obtains the ref...

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Abstract

The invention discloses an aeronautical telemetering channel selection method, and mainly solves the technical problem of multi-channel selection of an aircraft telemetering terminal system. The method comprises the following steps: 1) a ground telemetering station periodically and circularly sends characteristic signals to a target aircraft through an uplink channel; (2) a measurement and control base band terminal of the aircraft measures the channel quality by detecting known characteristic signals of an uplink channel; (3) the measurement and control base band terminal judges whether a switching condition is met or not according to the measurement result of the channel quality; (4) when it is judged that the channel switching condition is met, channel switching and locking are carried out, if not, the previous selection result of the downlink telemetering channel is kept unchanged; and 5) the cached data is downloaded to a ground telemetering station through the selected downlink telemetering channel to complete the transmission of the telemetering data. According to the invention, the transmission quality and reliability of the downlink telemetering channel can be effectively improved.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to aeronautical telemetry technology, specifically an aeronautical telemetry channel selection method, which can be used for channel selection of measurement and control data links in remote control telemetry systems of test aircraft and test loads. Background technique [0002] Aviation remote control telemetry is a necessary means for technical verification of test aircraft or test loads. Traditional aerial telemetry is to transmit telemetry data through radio communication between the telemetry antenna deployed on the aircraft and the telemetry receiving station on the ground. However, with the evolution of the test aircraft, the flight path of the test aircraft is more flexible, the flight attitude is more variable, coupled with the influence of air-ground multipath channel and the low elevation angle reception of the ground telemetry station, the quality of telemet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/38H04W36/00H04W36/30H04W36/34
CPCH04B1/38H04W36/0005H04W36/34H04W36/30Y02D30/70
Inventor 陈昱良李京娥张骞丹李钊
Owner XIAN SPACE STAR TECH IND GRP
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