CN-122027417-A - Dual-frequency integrated electronic system based on EBPSK modulation

Abstract

The invention discloses a dual-frequency integrated electronic system based on EBPSK modulation, which comprises two EBPSK signal modulators with different carrier frequencies and two paths of EBPSK signal demodulators, wherein the carrier frequency sent by a first EBPSK modulator is The second EBPSK modulator transmits the carrier frequency as The EBPSK demodulator in the dual-frequency integrated electronic system based on the EBPSK modulation highlights the phase change of the EBPSK modulation signal by using an impact filter with higher phase discrimination slope, converts the phase modulation information into parasitic amplitude modulation impact, and sends the received signal to low-noise amplification and is divided into frequencies And The two paths of signals are reflected by radar targets and then are received in a comparison mode according to a double-frequency continuous wave radar processing mode, and high-precision ranging information of the targets is obtained The EBPSK demodulator demodulates and outputs the wide-range non-fuzzy ranging information by using the impact filter Ranging information of two-path receiver And And (5) fusing. The comprehensive performance of the electronic system is improved, and the electronic system meets the requirements of multiple functions and multiple tasks.

Inventors

• WU LENAN
• ZHAO YUECHAO

Assignees

• 北京天达盛昭贸易有限公司

Dates

Publication Date

20260512

Application Date

20260128

Claims (8)

1. 1. The dual-frequency integrated electronic system based on the EBPSK modulation is characterized by comprising the following specific components: Two EBPSK signal modulators of different carrier frequencies and two paths of EBPSK signal demodulators; the first EBPSK modulator transmits carrier frequency as Is a EBPSK modulated signal of (b); The second EBPSK modulator transmits the carrier frequency as Is a EBPSK modulated signal of (b); The EBPSK demodulator in the dual-frequency integrated electronic system based on the EBPSK modulation highlights the phase change of an EBPSK modulation signal by an impact filter with higher phase discrimination slope, and converts phase modulation information into parasitic amplitude modulation impact; the received signal is sent to low noise amplification and divided into frequencies And And corresponds to the first receiver and the second receiver; the two paths of signals are received in a specific mode according to a double-frequency continuous wave radar processing mode after being reflected by a radar target, and high-precision ranging information of the target is obtained ; The EBPSK demodulator demodulates and outputs the wide-range non-fuzzy ranging information by using the impact filter ; Ranging information for two-way receiver And And (5) fusing.
2. 2. The EBPSK modulation-based dual-band integrated electronic system according to claim 1, wherein the impulse filter in the EBPSK demodulator in the EBPSK modulation-based dual-band integrated electronic system is a digital filter or an analog filter.
3. 3. The EBPSK modulated dual-band integrated electronic system according to claim 2, wherein said digital filter is of FIR type or IIR type.
4. 4. The EBPSK modulated dual-band integrated electronic system according to claim 1, wherein said two EBPSK signal modulators of different carrier frequencies specifically comprise: The EBPSK modulator 1 in the dual-frequency integrated electronic system based on the EBPSK modulation adopts the whole 0 code element modulation frequency as The output is still a continuous sine wave; Using repetition frequency as based on EBPSK modulator 2 The "all 1" symbol modulation frequency of (a) Where N is the number of carrier periods in each EBPSK symbol period.
5. 5. The dual-frequency integrated electronic system based on EBPSK modulation as in claim 1, wherein said two signals are received in a specific manner according to dual-frequency continuous wave radar processing after being reflected by radar target, to obtain high-precision ranging information of target Further comprises: the two paths of signals are received in a specific mode according to a double-frequency continuous wave radar processing mode after being reflected by a radar target, and high-precision ranging information of the target is obtained The maximum blur-free distance is For carrier frequency of The Doppler shift estimation and tracking of the continuous wave of the available target.
6. 6. The EBPSK modulation-based dual-frequency integrated electronic system according to claim 1, wherein said EBPSK demodulator utilizes said impact filter to demodulate and output wide-range non-ambiguous ranging information The method specifically comprises the following steps: The EBPSK demodulator 2 in a dual-frequency integrated electronic system based on EBPSK modulation uses the impulse filter to emphasize the carrier frequency The phase change of the upper EBPSK modulation signal reproduces the radar pulse echo of the target in the continuous wave background, thereby demodulating and outputting the wide-range non-fuzzy ranging information 。
7. 7. The EBPSK modulation-based dual-frequency integrated electronic system according to claim 1, wherein said ranging information for two-channel receivers And The fusion process further comprises the following steps: ranging information of two paths of receivers in dual-frequency integrated electronic system based on EBPSK modulation And After fusion, the functions of a pulse radar and a continuous wave radar are realized at the same time, and a high-precision large-range target ranging value is obtained Wherein Representing a downward integer; Adjusting the difference between the dual frequencies The ranging accuracy of the system may be changed and adjusting the EBPSK modulation parameter N may change the ranging range of the system.
8. 8. The EBPSK modulation-based dual-frequency integrated electronic system according to claim 1, further comprising: based on the radar system, if the dual-frequency integrated electronic system based on EBPSK modulation is at carrier frequency Symbol periods corresponding to the pulse repetition frequency An EBPSK signal modulated by the encoded encrypted data is transmitted while acting as a target property identifier.

Description

Dual-frequency integrated electronic system based on EBPSK modulation Technical Field The invention relates to the technical field of information and communication engineering, in particular to a dual-frequency integrated electronic system based on EBPSK modulation. Background With the development of electronic technology and the need for informatization systems, more and more complex electronic systems need to be loaded on the aircraft platform, and the pressure caused by this is manifold: 1) The radio spectrum of the space is more and more crowded, the intentional/unintentional interference is more and more serious, but the transmission rate required by the task is higher and higher, the downlink working frequency continuously occupies a higher transmission frequency band (for example, the downlink working frequency is developed from an X band to a Ka band or even a W band), and the resource influence of the frequency is increasingly revealed (the inter-satellite communication tends to form an optical communication network in a satellite constellation by utilizing a laser link). 2) The data transmission distance required by the deep space exploration task is further and further increased, and the signal-to-noise ratio margin of the system is still felt even though the antenna caliber of the earth station exceeds 60m and the spreading factor is hundreds. 3) Due to limitations of volume, weight, energy, complexity and installation space, multi-antenna systems (MIMO) and collaborative communication technologies that help to increase channel capacity "lift off" and "get on the day" require higher costs and system complexity. 4) Electromagnetic interference between numerous different function, different frequency band electronic devices and systems is also becoming more and more severe. Therefore, whether different electronic devices can be effectively integrated and integrated under the condition of limited platform load, available frequency band and aperture resources to achieve the multifunction and multitasking of the system has the difficult principle challenges, great economic benefit and profound and extensive technical progress significance. Disclosure of Invention The present invention has been made in view of the above problems, and it is an object of the present invention to provide a dual-band integrated electronic system based on EBPSK modulation that overcomes or at least partially solves the above problems. According to one aspect of the present invention, there is provided a dual-frequency integrated electronic system based on EBPSK modulation, the dual-frequency integrated electronic system specifically comprising: Two EBPSK signal modulators of different carrier frequencies and two paths of EBPSK signal demodulators; the first EBPSK modulator transmits carrier frequency as Is a EBPSK modulated signal of (b); The second EBPSK modulator transmits the carrier frequency as Is a EBPSK modulated signal of (b); The EBPSK demodulator in the dual-frequency integrated electronic system based on the EBPSK modulation highlights the phase change of an EBPSK modulation signal by an impact filter with higher phase discrimination slope, and converts phase modulation information into parasitic amplitude modulation impact; the received signal is sent to low noise amplification and divided into frequencies AndAnd corresponds to the first receiver and the second receiver; the two paths of signals are received in a specific mode according to a double-frequency continuous wave radar processing mode after being reflected by a radar target, and high-precision ranging information of the target is obtained ; The EBPSK demodulator demodulates and outputs the wide-range non-fuzzy ranging information by using the impact filter; Ranging information for two-way receiverAndAnd (5) fusing. Optionally, the impact filter in the EBPSK demodulator in the EBPSK modulation-based dual-frequency integrated electronic system is a digital filter or an analog filter. Optionally, the digital filter is of FIR type or IIR type. Optionally, the EBPSK signal modulators of the two different carrier frequencies specifically include: The EBPSK modulator 1 in the dual-frequency integrated electronic system based on the EBPSK modulation adopts the whole 0 code element modulation frequency as The output is still a continuous sine wave; Using repetition frequency as based on EBPSK modulator 2 The "all 1" symbol modulation frequency of (a)Where N is the number of carrier periods in each EBPSK symbol period. Optionally, the two paths of signals are received in a specific mode according to a double-frequency continuous wave radar processing mode after being reflected by a radar target, so that high-precision ranging information of the target is obtainedFurther comprises: the two paths of signals are received in a specific mode according to a double-frequency continuous wave radar processing mode after being reflected by a radar target, and high-preci