A Parameter Optimization Method for Integrated Communication Signal of Asymmetric Triangular FM Radar
A technology of triangular frequency modulation and optimization method, which is applied in the interdisciplinary field of radar communication technology, can solve the problems of not making full use of time resources and frequency band resources, and not considering communication synchronization acquisition, etc.
Active Publication Date: 2018-06-01
XIAN INSTITUE OF SPACE RADIO TECH
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The radar signals and communication signals of the first three types of integrated signals are mainly separated by time-division multiplexing or orthogonality in the frequency domain, which does not make full use of time resources and frequency band resources.
The latter two types of integrated signals mainly use spread spectrum technology, without considering the problem of communication synchronization capture
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[0127] A parameter optimization method for an asymmetric triangular FM radar communication integrated signal, the specific implementation steps are as follows:
[0128] (1) Establish a parametric model of the integrated communication signal of the asymmetric triangular FM radar;
[0129] The integrated signal can be expressed as:
[0130]
[0131] in:
[0132] The B and T are signal bandwidth and time width respectively; the s 1 (t) and s 2 (t) are positive frequency modulation part and negative frequency modulation part respectively, where s 1 (t) is the synchronous acquisition sequence, and the communication information is modulated at s 2 (t) on the signal; the c(t) is on the signal s 2 (t) the communication information modulated on; the k 1 and k 2 s respectively 1 (t) and s 2 (t) modulation frequency (where k 1 >0,k 2 ); the T 1 and T 2 s respectively 1 (t) and s 2 (t) signal length, and have T=T 1 +T 2 ; The N is in the signal s 2 (t) the number o...
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The invention discloses a parameter optimization method for a communication integration signal of an asymmetric triangular frequency modulation radar. The shape of a frequency curve of the integration signal is an asymmetric triangle, and the integration signal consists of two LFM (linear frequency modulation) signals with opposite frequency modulation ratio symbols. The first signal is an LFM signal with the frequency modulation ratio k1, has no modulated communication information and is used for the synchronization or capturing of a communication signal, and the second signal is an LFM signal with the frequency modulation ratio k2, wherein k1*k2 is less than zero. Communication code element information is modulated on the second signal in a mode (-1, 1). The method is based on a parameterized model of the communication integration signal of the asymmetric triangular frequency modulation radar, and employs a fuzzy function for representing radar detection performances and a target function for representing communication performances to optimize and design the parameters of the integration signal. The method guarantees the probability of successful capturing of communication through employing a shortest synchronization signal, and guarantees an information transmission rate at a certain signal to noise ratio under the condition of guaranteeing the radar detection performances.
Description
technical field [0001] The invention relates to a parameter optimization method of an asymmetric triangular frequency modulation radar communication integrated signal, which can be applied to the radar communication integrated waveform design based on signal sharing, belongs to the interdisciplinary field of radar communication technology, and particularly relates to the radar communication integrated technology. Background technique [0002] With the development of technology and the needs of information warfare, the form of warfare has changed from single weapon platform confrontation to system confrontation, and the realization of multifunctional electronic system integration has become the development trend of military electronic systems in the future. The integration of radar communication signals is of great significance to improve the comprehensive performance of electronic systems. Exploring the design method of integrated waveform is the key research content of rada...
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IPC IPC(8): H04L27/10G01S7/35G01S7/02
CPCG01S7/021G01S7/35H04L27/103
Inventor 黎薇萍孙召王显煜刘鑫一
Owner XIAN INSTITUE OF SPACE RADIO TECH