CN-122026935-A - Fundamental wave and harmonic wave combined receiver and combined receiving method

CN122026935ACN 122026935 ACN122026935 ACN 122026935ACN-122026935-A

Abstract

The application provides a fundamental wave and harmonic wave combined receiver and a combined receiving method, which comprise an antenna extension, a fundamental wave and harmonic wave frequency conversion extension, a harmonic wave and intermediate frequency signal processing extension, a signal processing extension and a fundamental wave and harmonic frequency signal processing extension, wherein the antenna extension is used for receiving a space fundamental wave signal to output a radio frequency fundamental wave signal, the fundamental wave and harmonic wave frequency conversion extension is used for forming a fundamental wave and harmonic wave frequency conversion input signal based on the radio frequency fundamental wave signal, the fundamental wave and harmonic frequency conversion input signal is subjected to frequency conversion processing to output a fundamental wave intermediate frequency signal, the harmonic wave frequency conversion input signal is subjected to frequency multiplication processing to generate a harmonic wave signal, the harmonic wave intermediate frequency signal is subjected to frequency conversion processing to output, the signal processing extension is used for extracting time domain characteristic parameters and frequency domain characteristic parameters of the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal, and determining that the harmonic intermediate frequency signal is a homologous derivative signal generated by frequency multiplication of the fundamental wave intermediate frequency signal according to the consistency of the time domain characteristic parameters and the frequency domain characteristic parameters of the time domain characteristic parameters of the fundamental wave intermediate frequency signal, and the fundamental wave and the harmonic wave combined receiving method.

Inventors

ZHANG WEIJIE
ZHU HUISHI
LIU JIANGUO

Assignees

中国科学院半导体研究所

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. A fundamental harmonic joint receiver, comprising: The antenna extension is used for receiving the space fundamental wave signals and outputting radio frequency fundamental wave signals; the fundamental wave harmonic frequency conversion extension is connected with the antenna extension and is used for carrying out power distribution on the radio frequency fundamental wave signals to form fundamental wave frequency conversion input signals and harmonic frequency conversion input signals, carrying out frequency conversion processing on the fundamental wave frequency conversion input signals to output fundamental wave intermediate frequency signals, carrying out frequency multiplication processing on the harmonic frequency conversion input signals to generate harmonic signals, carrying out frequency conversion processing on the harmonic signals to output harmonic intermediate frequency signals, and The signal processing extension is connected with the fundamental wave harmonic frequency conversion extension and is used for receiving the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal, extracting time domain characteristic parameters and frequency domain characteristic parameters of the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal, confirming that the harmonic intermediate frequency signal and the fundamental wave intermediate frequency signal are homologous derivative signals according to consistency of the time domain characteristic parameters and multiple relations between the frequency domain characteristic parameters of the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal, matching the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal to obtain a matching result, and utilizing the harmonic intermediate frequency signal to conduct subsequent signal processing based on the matching result.
2. The fundamental harmonic joint receiver of claim 1 wherein the fundamental harmonic frequency conversion extension comprises: The radio frequency receiving unit is used for receiving the radio frequency fundamental wave signal, filtering, amplifying, self-adaptive gain control and power distribution processing the radio frequency fundamental wave signal, and outputting the fundamental wave variable frequency input signal and the harmonic variable frequency input signal respectively; The fundamental wave frequency conversion unit is connected with the radio frequency receiving unit and is used for receiving the fundamental wave frequency conversion input signal, carrying out frequency conversion, filtering and amplification on the fundamental wave frequency conversion input signal and outputting a fundamental wave frequency conversion output signal; the fundamental wave intermediate frequency unit is connected with the fundamental wave frequency conversion unit and is used for receiving the fundamental wave frequency conversion output signal, filtering and amplifying the fundamental wave frequency conversion output signal and outputting the fundamental wave intermediate frequency signal; The harmonic frequency conversion unit is connected with the radio frequency receiving unit and is used for receiving the harmonic frequency conversion input signal, carrying out frequency multiplication, frequency conversion, filtering and amplification on the harmonic frequency conversion input signal and outputting a harmonic frequency conversion output signal; and the harmonic intermediate frequency unit is connected with the harmonic frequency conversion unit and is used for receiving the harmonic frequency conversion output signal, filtering and amplifying the harmonic frequency conversion output signal and outputting the harmonic intermediate frequency signal.
3. The fundamental harmonic joint receiver according to claim 2, wherein the harmonic frequency conversion unit comprises: The harmonic frequency multiplication link is used for receiving the harmonic frequency conversion input signal, carrying out frequency multiplication processing on the harmonic frequency conversion input signal and outputting a harmonic preprocessing signal; And the harmonic frequency conversion link is connected with the harmonic frequency multiplication link and is used for receiving the harmonic preprocessing signal and the harmonic local oscillation signal, carrying out frequency conversion processing and outputting the harmonic frequency conversion output signal.
4. The fundamental harmonic joint receiver according to claim 2, wherein the fundamental frequency conversion unit includes: The fundamental wave mixer is used for receiving the fundamental wave frequency conversion input signal and the fundamental wave local oscillation signal, carrying out frequency mixing processing on the fundamental wave frequency conversion input signal and the fundamental wave local oscillation signal and outputting a fundamental wave frequency mixing signal; and the fundamental wave filter amplifier is connected with the fundamental wave mixer and used for filtering and amplifying the fundamental wave mixing signals and outputting the fundamental wave frequency conversion output signals.
5. A fundamental harmonic joint receiver as claimed in claim 3, wherein the harmonic doubling link comprises: The frequency multiplication preprocessing circuit is used for receiving the harmonic frequency conversion input signal, filtering, amplifying and filtering the harmonic frequency conversion input signal and outputting a frequency multiplication preprocessing signal with preset power; the harmonic frequency doubling circuit is connected with the frequency doubling preprocessing circuit and is used for receiving the frequency doubling preprocessing signal, carrying out frequency doubling processing on the frequency doubling preprocessing signal and outputting a harmonic frequency doubling signal; and the frequency multiplication post-processing circuit is connected with the harmonic frequency multiplication circuit and is used for receiving the harmonic frequency multiplication signal, filtering and amplifying the harmonic frequency multiplication signal and outputting the harmonic preprocessing signal.
6. The fundamental harmonic joint receiver according to claim 5, wherein the harmonic doubling circuit is selected from any one of the following circuit structures: The amplifier circuit comprises at least one stage of amplifier, works in a saturated state and generates harmonic frequency multiplication signals by utilizing nonlinear characteristics; A frequency multiplier circuit comprising at least one stage of a frequency multiplier for multiplying the frequency of an input signal to a target band; The microwave photon frequency doubling circuit comprises a laser, a modulator and a detector, wherein the laser is used for providing a light source for the modulator, a working bias point of the modulator is arranged in a nonlinear region and used for loading the frequency doubling preprocessing signal and generating an optical carrier harmonic signal, and the detector is used for converting the optical carrier harmonic signal into a harmonic frequency doubling signal of an electric domain.
7. The fundamental harmonic joint receiver according to claim 1, wherein the time domain characteristic parameters include arrival time, end time and time width of the fundamental intermediate frequency signal and/or the harmonic intermediate frequency signal; The frequency domain characteristic parameters comprise the starting frequency, the ending frequency and the bandwidth of the fundamental intermediate frequency signal and/or the harmonic intermediate frequency signal.
8. The fundamental wave and harmonic wave joint receiver according to claim 7, wherein the consistency of the time domain characteristic parameters comprises that the arrival time, the ending time and the time width of the fundamental wave intermediate frequency signal and the harmonic wave intermediate frequency signal are the same; the multiple relation among the frequency domain characteristic parameters comprises that the starting frequency, the ending frequency and the bandwidth of the harmonic intermediate frequency signal are integer multiples of the starting frequency, the ending frequency and the bandwidth of the fundamental intermediate frequency signal respectively.
9. The fundamental harmonic joint receiver of claim 3, further comprising: The frequency source extension is respectively connected with the fundamental wave harmonic frequency conversion extension and the signal processing extension and is used for providing fundamental wave local oscillation signals for fundamental wave frequency conversion units in the fundamental wave harmonic frequency conversion extension, providing harmonic wave local oscillation signals for harmonic frequency conversion units in the fundamental wave harmonic frequency conversion extension and providing clock signals for the signal processing extension.
10. A fundamental harmonic joint receiving method applied to the fundamental harmonic joint receiver as claimed in any one of claims 1 to 9, comprising: receiving a space fundamental wave signal and outputting a radio frequency fundamental wave signal; performing power distribution on the radio frequency fundamental wave signals to form fundamental wave frequency conversion input signals and harmonic frequency conversion input signals; Performing frequency conversion processing on the fundamental frequency conversion input signal, and outputting a fundamental intermediate frequency signal; performing frequency multiplication processing on the harmonic frequency conversion input signal to generate a harmonic signal, performing frequency conversion processing on the harmonic signal, and outputting a harmonic intermediate frequency signal; Extracting time domain characteristic parameters and frequency domain characteristic parameters of the fundamental intermediate frequency signals and the harmonic intermediate frequency signals; According to the consistency of the time domain characteristic parameters and the multiple relation of the frequency domain characteristic parameters between the fundamental intermediate frequency signal and the harmonic intermediate frequency signal, confirming that the harmonic intermediate frequency signal and the fundamental intermediate frequency signal are homologous derivative signals, and matching the fundamental intermediate frequency signal and the harmonic intermediate frequency signal to obtain a matching result; And based on the matching result, performing subsequent signal processing by using the harmonic intermediate frequency signal.

Description

Fundamental wave and harmonic wave combined receiver and combined receiving method Technical Field The application relates to the technical field of microwave detection, in particular to a fundamental wave and harmonic wave combined receiver and a combined receiving method. Background The microwave detection system is widely applied to the fields of radar, communication, electronic countermeasure and the like, and one of the core tasks is to accurately and spatially position a target. In practical applications, particularly when the size of a platform such as an aircraft or a satellite is limited, the aperture of the receiving antenna is usually fixed and cannot be increased at will. Conventional receivers can only directly process the received fundamental wave signal. When the frequency of the signal to be detected is low, the corresponding wavelength is long, under the constraint of fixed antenna caliber, the detection capability of the system for the signal is inherently limited, and the detection capability of the system for the signal is improved by measuring the homologous derivative signal, so that the method is an important technical approach. Disclosure of Invention In view of the above, the present application provides a fundamental wave harmonic wave joint receiver and a joint receiving method. According to a first aspect of the application, a fundamental wave and harmonic wave combined receiver is provided, which comprises an antenna extension, a fundamental wave and harmonic frequency conversion extension, a frequency conversion extension and a signal processing extension, wherein the antenna extension is used for receiving a space fundamental wave signal and outputting a radio frequency fundamental wave signal, the fundamental wave and harmonic frequency conversion extension is connected with the antenna extension and used for carrying out power distribution on the radio frequency fundamental wave signal to form a fundamental wave frequency conversion input signal and a harmonic frequency conversion input signal, carrying out frequency conversion processing on the fundamental wave frequency conversion input signal to output a fundamental wave intermediate frequency signal, carrying out frequency multiplication processing on the harmonic frequency conversion input signal to generate a harmonic signal and carrying out frequency conversion processing on the harmonic signal to output a harmonic intermediate frequency signal, and the signal processing extension is connected with the fundamental wave and harmonic intermediate frequency conversion extension and used for receiving a time domain characteristic parameter and a frequency domain characteristic parameter of the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal, and confirming that a harmonic intermediate frequency signal and an intermediate frequency signal are homologous derivative signals according to the consistency of the time domain characteristic parameter and the frequency domain characteristic parameter between the fundamental wave intermediate frequency signal and the harmonic intermediate frequency signal, carrying out matching result based on the harmonic intermediate frequency signal and the intermediate frequency signal. According to the embodiment of the application, the fundamental wave harmonic frequency conversion extension comprises a radio frequency receiving unit, a fundamental wave frequency conversion unit, a fundamental wave intermediate frequency unit and a harmonic frequency conversion unit, wherein the radio frequency receiving unit is used for receiving the radio frequency fundamental wave signal, carrying out filtering, amplifying, self-adaptive gain control and power distribution processing on the radio frequency fundamental wave signal, respectively outputting the fundamental wave frequency conversion input signal and the harmonic frequency conversion input signal, the fundamental wave frequency conversion unit is connected with the radio frequency receiving unit and used for receiving the fundamental wave frequency conversion input signal, carrying out frequency conversion, filtering and amplifying processing on the fundamental wave frequency conversion input signal, outputting a fundamental wave intermediate frequency unit, the fundamental wave intermediate frequency unit is connected with the fundamental wave frequency conversion unit and used for receiving the fundamental wave frequency conversion output signal, carrying out filtering and amplifying processing on the fundamental wave frequency conversion output signal, outputting the fundamental wave intermediate frequency signal, and the harmonic frequency conversion unit is connected with the radio frequency receiving unit and carrying out frequency multiplication, frequency conversion, filtering and amplifying processing on the harmonic frequency conversion input signal, and outputting the harmonic frequency c