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High-power Loran C pulse transmitter and waveform modulation method

A high-power, transmitter technology, applied in the direction of electrical components, transmission systems, etc., can solve the problems of insufficient expansion and upgrade capabilities, difficulty in adapting to new signal systems, etc., and achieve the effect of improving performance indicators and reducing signal distortion

Inactive Publication Date: 2017-11-07
BEIJING BBEF SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This modulation method has mature technology and high reliability, but its expansion and upgrade capabilities are insufficient, and it is difficult to adapt to the new signal system (enhanced Loran C signal) in the future.

Method used

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  • High-power Loran C pulse transmitter and waveform modulation method
  • High-power Loran C pulse transmitter and waveform modulation method
  • High-power Loran C pulse transmitter and waveform modulation method

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0015] like figure 1 As shown, a high-power Roland C pulse transmitter includes a signal exciter, the output of the signal exciter is connected in series with a power amplifier, and the power amplifier is connected with a matched filter for matching and filtering the pulse signal output by the power amplifier. The matched filter is connected with an antenna tuner, and the antenna tuner is used for signal tuning and processing, and sends the pulse signal to the antenna;

[0016] The transmitter also includes a power supply, which is a high-voltage AC and DC power supply, respectively connected to the signal exciter, power amplifier, matched filter, and antenna tuner to provide electrical energy; the power supply includes a plurality of distributed switching power supplies Modules, when individual power module...

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Abstract

The invention discloses a high-power Loran C pulse transmitter, comprising a signal exciter, wherein an output end of the signal exciter is connected with a power amplifier in series; the power amplifier is connected with a matching filter which is used for matching and filtering pulse signals output by the power amplifier; the matching filter is connected with an antenna tuner; the antenna tuner is used for tuning the signals and transmitting the pulse signals to an antenna; a predistortion unit is arranged in a Loran C modulator and is used for carrying out distortion analysis processing, predistortion processing and waveform generation; and the predistortion unit is also connected with the signal collection unit. The transmitter is mainly applied to a broadcasting subsystem in a long wave time service and Loran C navigation system. Through utilization of a predistortion closed loop processing system, the predistortion processing and dynamic adjustment are carried out on Loran C pulse signals; new and old signal mechanisms are compatible; the signal distortion is effectively reduced; and the performance index of the transmitter is improved.

Description

technical field [0001] The present invention relates to its Roland-C pulse signal modulation technology, in particular to its high-power Roland-C pulse transmitter and its waveform modulation method. Background technique [0002] Loran-C pulse signal modulation technology is mainly used in long-wave timing and Loran-C navigation systems. [0003] The existing Loran C pulse signal modulation method is mainly: through the high energy storage capacitor to discharge to the LC oscillation circuit instantaneously, generate a large current damped oscillation, and obtain a high power signal, and the main channel of the transmission signal is the control combination-power generator-RF switch —Coupling network—Output network—Switch network. This modulation method has mature technology and high reliability, but its expansion and upgrade capabilities are insufficient, and it is difficult to adapt to the new signal system (enhanced Loran C signal) in the future. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04
CPCH04B1/04H04B1/0475H04B2001/0408H04B2001/0491
Inventor 谭啸张守忠张文峦迟慧文
Owner BEIJING BBEF SCI & TECH
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