Measurement and control communication integrated signal generating and receiving method in high dynamic environment
A high dynamic environment and communication signal technology, applied in the transmission system, electrical components, etc., can solve the problems that cannot be directly applied to the high dynamic environment, and achieve the effect of improving anti-interference ability, improving performance, and simple design
Active Publication Date: 2021-09-28
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology
However, traditional low dynamic environment carrier synchronization technology cannot be directly applied to high dynamic environment, and a new generation of carrier synchronization algorithm suitable for high dynamic environment is urgently needed to achieve fast acquisition and high precision tracking
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[0029] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.
[0030] The integrated signal of measurement, control and communication is mainly composed of measurement and control signal and communication signal. The signal of this system can be used in various scenarios such as space, air space, satellite ground, and inter-satellite. It has a wide range of applications and low design complexity.
[0031] The generation of measurement and control signals mainly includes measurement and control data code generator, spread spectrum code generator, square wave subcarrier generator and intermediate frequency carrier generation module; the generation of communication signal mainly includes data code generation module, BPSK modulation module and intermediate frequency carrier generation module. After synthesizing the digital intermediate frequency signal, it is modulated to the radio frequency terminal for transm...
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The invention provides a measurement and control communication integrated signal generating and receiving method in a high dynamic environment. Measurement and control data modulation is carried out through BOC modulation, and communication data modulation is carried out through BPSK modulation. Due to the split spectrum characteristic of the BOC signals, the signals of the center frequency point can be moved to the two sides of the corresponding frequency point, on this basis, the BPSK signals are inserted into the center frequency point, and simultaneous transmission of measurement and control communication signals is achieved on the same frequency point. The signal has the main advantages that through the mode, the design of a receiver is greatly simplified, and the frequency band utilization rate is increased; a spread spectrum modulation mode adopted by measurement and control signals has better anti-interference capability, an antenna can be assisted to more accurately position the coming direction of the signals, and the signal-to-noise ratio of communication signals is further improved by adjusting the pointing direction of the antenna; as the communication signal and the measurement and control signal have the same Doppler frequency shift, the communication signal can provide a high-precision Doppler measurement result through the measurement and control signal to realize high-speed data transmission under a high-dynamic condition.
Description
technical field [0001] The invention relates to a signal system research, in particular to a signal system capable of transmitting measurement and control communication signals at the same frequency points at the same time. Background technique [0002] The current aviation communication environment is becoming more and more complex. In addition to facing the interference signals of hostile forces, the aircraft itself has fast speed, high acceleration, and even large jerk. The receiver often works in a high-dynamic environment, so that the received signal has a Doppler Frequency offset and first-order and second-order Doppler rate of change. These two issues pose great challenges to the extraction of communication signals and the synchronization of bit error rate and carrier. [0003] One way to improve the anti-interference ability of the system is to modulate the signal through the spread spectrum code, and to exchange for E by expanding the bandwidth. b / N 0 The improv...
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IPC IPC(8): H04B1/7075H04B1/7087H04B1/7097H04B1/10
CPCH04B1/7075H04B1/7087H04B1/7097H04B1/10Y02D30/70
Inventor 张翠平李雪刘允薛林山赵波宋瑞良董佳林刘宁
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP