Dynamic plasma sheath phase shift keying signal decision detection method

A technology of plasma sheath and phase shift keying, which is applied in the field of ion sheath phase shift keying signal judgment and detection, can solve the problems of reducing the bit error rate, reducing the overlapping of constellation points, and complicated implementation methods, so as to reduce the impact, Solve the effect of constellation point overlap and reliable signal transmission
CN105553897AInactive Publication Date: 2016-05-04XIDIAN UNIV
5 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2016-05-04
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a dynamic plasma sheath phase shift keying signal decision detection method. A special law of an electromagnetic wave propagating in the plasma is used, a channel feature is predicted through measurement on a reflected wave, and a training sample is built. A signal acquisition device acquires an m-dimensional phase shift keying signal after plasma sheath, the m-dimensional phase shift keying signal is transmitted to a processing unit for decision detection processing, and a decision detection processing result is outputted. According to the dynamic plasma sheath phase shift keying signal decision detection method provided by the above technical scheme, the constellation point overlapping problem caused by dynamic plasma sheath spurious modulation effects can be effectively solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of near-space measurement and control communication, in particular to a dynamic plasma sheath phase-shift keying signal judgment and detection method. Background technique

[0002] During the flight of a re-entry vehicle or a high-speed vehicle in near space, the body and the air will have severe friction, which will generate a plasma sheath, resulting in deterioration of communication quality, and in severe cases, interruption of information links, forming the so-called "black barrier" phenomenon.

[0003] In recent years, it is generally believed that the main measures that are promising to solve this problem are: 1. Improving communication frequency and power, 2. Pneumatic forming, 3. Quenching of electrophilic substances, 4. Weakening of electromagnetic windows. To sum up, for the blackout problem caused by the plasma sheath, the current mainstream solution is to increase the communication frequency or reduce the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More