CN111416667A - A wideband channelized receiver - Google Patents
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Abstract
本发明实施例提供一种宽带信道化接收机，包括光锁相稳频模块，以及顺次连接的光梳生成模块、线性调制及解复用模块和正交混频及解调模块；其中，所述光梳生成模块用于基于两个波长不同的光纤激光器发射的激光，分别生成信号光梳和本振光梳，所述光锁相稳频模块用于保持所述信号光梳的第一信号梳齿和所述本振光梳的第一本振梳齿的频率对齐。本发明实施例提供的一种宽带信道化接收机，提高了单个光梳的梳齿功率，进而提高了信道化信号的信噪比，同时提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求，并且避免了周期性滤波过程产生的滤波带宽较宽，中心波长漂移的问题。
An embodiment of the present invention provides a wideband channelized receiver, including an optical phase locking and frequency stabilization module, and an optical comb generation module, a linear modulation and demultiplexing module, and a quadrature frequency mixing and demodulation module connected in sequence; wherein, The optical comb generation module is used to generate a signal optical comb and a local oscillator optical comb respectively based on the laser light emitted by two fiber lasers with different wavelengths, and the optical phase locking and frequency stabilization module is used to maintain the first signal optical comb. The frequencies of the signal comb teeth and the first local oscillator comb teeth of the local oscillator optical comb are aligned. The broadband channelized receiver provided by the embodiment of the present invention increases the comb power of a single optical comb, thereby improving the signal-to-noise ratio of the channelized signal, and at the same time, the spectral utilization rate of the optical comb is improved, and the optical power is reduced. The number of comb teeth is required, and the problems of wide filtering bandwidth and center wavelength drift caused by the periodic filtering process are avoided.
Description
技术领域technical field
本发明涉及光通信领域，尤其涉及一种宽带信道化接收机。The present invention relates to the field of optical communication, in particular to a wideband channelized receiver.
背景技术Background technique
随着通信技术的发展，无论是生活中常用的通信导航识别技术，还是现代电子战争中雷达侦察技术，所需处理的信号带宽都在不断增加，载波的频率也在不断提升。因此，将高频宽带射频信号(几十吉赫)进行信道化接收从而转换为频率较低的中频信号是非常必要的。传统电子技术信道化接收机利用模拟电子器件进行下变频，该方法存在器件体积庞大、带宽范围有限、高损耗和无法应对强干扰的电磁环境等问题，已经难以满足日益发展的射频系统的要求。随着光子技术的不断发展，微波光子学成为人们研究的热点。通过利用光子技术具有低损耗、尺寸小、宽带和抗干扰等优势，微波光子学突破了传统电子技术在微波工程中遇到的技术瓶颈。With the development of communication technology, whether it is the communication navigation and identification technology commonly used in life or the radar reconnaissance technology in modern electronic warfare, the signal bandwidth required to be processed is constantly increasing, and the frequency of the carrier is also increasing. Therefore, it is very necessary to channelize the high-frequency broadband radio frequency signal (tens of gigahertz) to convert it into an intermediate frequency signal with a lower frequency. Traditional electronic technology channelized receivers use analog electronic devices for down-conversion. This method has problems such as bulky devices, limited bandwidth, high loss, and inability to cope with strong interference in the electromagnetic environment. It has been difficult to meet the requirements of the increasingly developed radio frequency system. With the continuous development of photonic technology, microwave photonics has become a research hotspot. By taking advantage of the advantages of photonic technology such as low loss, small size, wide bandwidth and anti-interference, microwave photonics breaks through the technical bottleneck encountered by traditional electronic technology in microwave engineering.
目前，许多微波光子信道化方法被用于射频信号的下变频接收，其中基于光频率梳的信道化方案被广泛研究。现有的一种基于光频率梳的信道化测量系统由于信号光频率梳和本振光频率梳的自由光谱范围的差异，不同频点处的射频信号被划分到不同信道，光梳齿的频谱利用率不高。另一种射频信道化方法利用周期性滤波装置减小本振光梳的梳齿间隔，但是现有的周期性滤波装置，存在滤波带宽较宽，中心波长漂移等问题。At present, many microwave photonic channelization methods are used for down-conversion reception of RF signals, among which channelization schemes based on optical frequency combs are widely studied. Due to the difference in the free spectral range of the signal optical frequency comb and the local oscillator optical frequency comb, the existing channelized measurement system based on the optical frequency comb, the radio frequency signals at different frequency points are divided into different channels, and the spectrum of the optical comb teeth is divided into different channels. Utilization is not high. Another radio frequency channelization method uses a periodic filtering device to reduce the comb tooth interval of the local oscillator optical comb, but the existing periodic filtering device has problems such as wide filtering bandwidth and center wavelength shift.
发明内容SUMMARY OF THE INVENTION
本发明实施例提供一种宽带信道化接收机，用以解决现有的基于光频率梳的信道化方案光梳齿频率利用率不高，利用周期性滤波装置导致的滤波带宽较宽、中心波长漂移的问题。Embodiments of the present invention provide a wideband channelization receiver, which is used to solve the problem that the existing channelization scheme based on optical frequency combs has low frequency utilization of optical comb teeth, and the use of periodic filtering devices results in wide filtering bandwidth and central wavelength. drift problem.
本发明实施例提供一种宽带信道化接收机，包括光锁相稳频模块，以及顺次连接的光梳生成模块、线性调制及解复用模块和正交混频及解调模块；An embodiment of the present invention provides a wideband channelized receiver, including an optical phase-locked frequency stabilization module, and an optical comb generation module, a linear modulation and demultiplexing module, and a quadrature frequency mixing and demodulation module connected in sequence;
其中，所述光梳生成模块用于基于两个波长不同的光纤激光器发射的激光，分别生成信号光梳和本振光梳，所述光锁相稳频模块用于保持所述信号光梳的第一信号梳齿和所述本振光梳的第一本振梳齿的频率对齐。Wherein, the optical comb generation module is used to generate a signal optical comb and a local oscillator optical comb respectively based on the laser light emitted by two fiber lasers with different wavelengths, and the optical phase locking and frequency stabilization module is used to maintain the signal optical comb The frequencies of the first signal comb teeth and the first local oscillator comb teeth of the local oscillator optical comb are aligned.
进一步地，所述光锁相稳频模块与所述线性调制及解复用模块连接；Further, the optical phase locking and frequency stabilization module is connected to the linear modulation and demultiplexing module;
所述线性调制及解复用模块将所述信号光梳的第一信号梳齿的部分信号功率，以及所述本振光梳的第一本振梳齿的部分本振功率输入至所述光锁相稳频模块，以供所述光锁相稳频模块基于所述部分信号功率和所述部分本振功率，保持所述信号光梳的第一信号梳齿和所述本振光梳的第一本振梳齿的频率对齐。The linear modulation and demultiplexing module inputs part of the signal power of the first signal comb tooth of the signal optical comb and part of the local oscillator power of the first local oscillator comb tooth of the local oscillator optical comb to the optical comb A phase-locked and frequency-stabilized module, for the optical phase-locked and frequency-stabilized module to maintain the first signal comb tooth of the signal optical comb and the LO optical comb based on the partial signal power and the partial local oscillator power. The frequencies of the first LO comb teeth are aligned.
进一步地，所述光锁相稳频模块分别与所述光梳生成模块的本振输出端口和所述线性调制及解复用模块的解复用输入端口连接；Further, the optical phase locking and frequency stabilization module is respectively connected with the local oscillator output port of the optical comb generation module and the demultiplexing input port of the linear modulation and demultiplexing module;
所述本振输出端口输出的本振光梳，经过所述光锁相稳频模块调整所述本振光梳的相位后，输入至所述解复用输入端口。The local oscillator optical comb output from the local oscillator output port is input to the demultiplexing input port after the phase of the local oscillator optical comb is adjusted by the optical phase locking and frequency stabilization module.
进一步地，所述光锁相稳频模块与所述光梳生成模块的本振光纤激光器连接；Further, the optical phase locking and frequency stabilization module is connected to the local oscillator fiber laser of the optical comb generating module;
所述光锁相稳频模块用于调整所述本振光纤激光器的输出频率。The optical phase locking and frequency stabilization module is used to adjust the output frequency of the local oscillator fiber laser.
进一步地，所述正交混频及解调模块对所述信号光梳的每一信号梳齿和所述本振光梳的每一本振梳齿进行正交混频和解调，得到每一通道的通道接收信号；Further, the quadrature frequency mixing and demodulation module performs quadrature frequency mixing and demodulation on each signal comb tooth of the signal optical comb and each local oscillator comb tooth of the local oscillator optical comb to obtain each signal comb. A channel of a channel receives a signal;
其中，任一通道的带宽为所述本振光梳的本振梳齿频率间隔与所述信号光梳的信号梳齿频率间隔之差；Wherein, the bandwidth of any channel is the difference between the frequency interval of the LO comb teeth of the LO comb and the frequency interval of the signal comb teeth of the signal optical comb;
任一通道内接收到的信号频率范围是基于所述任一通道对应的所述本振梳齿与所述信号梳齿的频率差，以及所述任一通道的带宽确定的。The frequency range of the signal received in any channel is determined based on the frequency difference between the local oscillator comb tooth corresponding to the any channel and the signal comb tooth, and the bandwidth of the any channel.
进一步地，所述任一通道内接收到的信号频率范围fband如下式所示：Further, the frequency range f band of the signal received in any of the channels is shown in the following formula:
式中，fΔ为所述第一信号梳齿和所述第一本振梳齿的固定频率差，k为所述任一通道的序号，β为带宽。In the formula, f Δ is the fixed frequency difference between the first signal comb tooth and the first local oscillator comb tooth, k is the serial number of any channel, and β is the bandwidth.
进一步地，所述光梳生成模块包括信号光梳生成子模块和本振光梳生成子模块；Further, the optical comb generation module includes a signal optical comb generation sub-module and a local oscillator optical comb generation sub-module;
其中所述信号光梳生成子模块用于基于信号光纤激光器发射的激光生成所述信号光梳，所述本振光梳生成子模块用于基于本振光纤激光器发射的激光生成所述本振光梳。The signal optical comb generating sub-module is configured to generate the signal optical comb based on the laser light emitted by the signal fiber laser, and the local oscillator optical comb generating sub-module is configured to generate the local oscillator light based on the laser light emitted by the local oscillator fiber laser comb.
进一步地，所述线性调制及解复用模块包括线性调制子模块和解复用子模块；Further, the linear modulation and demultiplexing module includes a linear modulation submodule and a demultiplexing submodule;
其中，所述线性调制子模块用于将接收到宽带射频信号线性调制到所述信号光梳上，所述解复用子模块用于对所述本振光梳和线性调制后的信号光梳进行解复用。Wherein, the linear modulation sub-module is used for linearly modulating the received broadband radio frequency signal onto the signal optical comb, and the demultiplexing sub-module is used for the local oscillator optical comb and the linearly modulated signal optical comb demultiplex.
本发明实施例提供的一种宽带信道化接收机，通过设置两个波长不同的光纤激光器分别用于对应生成信号光梳和本振光梳，提高了单个光梳的梳齿功率，进而提高了信道化信号的信噪比。同时利用光锁相稳频模块保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿频率对齐，使信号光梳和本振光梳中心频率左右两边的频率梳齿能够得到充分利用，提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求。而且本发明实施例提供的宽带信道化接收机未使用周期性滤波装置，避免了周期性滤波过程产生的滤波带宽较宽，中心波长漂移的问题。In a broadband channelized receiver provided by an embodiment of the present invention, by setting two fiber lasers with different wavelengths to respectively generate a signal optical comb and a local oscillator optical comb, the comb power of a single optical comb is improved, thereby improving the The signal-to-noise ratio of the channelized signal. At the same time, the optical phase-locked frequency stabilization module is used to keep the frequency alignment of the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb, so that the frequency comb teeth on the left and right sides of the center frequency of the signal optical comb and the local oscillator optical comb are aligned. It can be fully utilized, the spectral utilization ratio of the comb teeth of the optical comb is improved, and the quantity requirement of the comb teeth of the optical comb is reduced. Moreover, the wideband channelized receiver provided by the embodiment of the present invention does not use a periodic filtering device, which avoids the problems of wide filtering bandwidth and center wavelength drift caused by the periodic filtering process.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.
图1为本发明实施例提供的宽带信道化接收机的结构示意图；FIG. 1 is a schematic structural diagram of a wideband channelized receiver provided by an embodiment of the present invention;
图2为本发明实施例提供的信号光梳和本振光梳的频谱示意图；FIG. 2 is a schematic spectrum diagram of a signal optical comb and a local oscillator optical comb provided by an embodiment of the present invention;
图3为本发明另一实施例提供的宽带信道化接收机的结构示意图。FIG. 3 is a schematic structural diagram of a wideband channelized receiver according to another embodiment of the present invention.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
图1为本发明实施例提供的宽带信道化接收机的结构示意图，如图1所示，宽带信道化接收机，包括光锁相稳频模块140，以及顺次连接的光梳生成模块110、线性调制及解复用模块120和正交混频及解调模块130；其中，光梳生成模块110用于基于两个波长不同的光纤激光器发射的激光，分别生成信号光梳和本振光梳，光锁相稳频模块140用于保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿的频率对齐。FIG. 1 is a schematic structural diagram of a wideband channelized receiver provided by an embodiment of the present invention. As shown in FIG. 1 , the wideband channelized receiver includes an optical phase-locked
具体地，宽带信道化接收机的工作原理是：宽带信道化接收机产生两组相干光频率梳，在获得宽带射频信号后，将其中一组光频率梳作为载波，用于调制宽带射频信号；将另一组光频率梳作为光本振。通过将每一本振梳齿与其对应的载波梳齿所调制的宽带射频信号进行数字相干解调，将一个宽带射频信号的不同频率段以多通道的形式拆解，并针对每个通道范围内的射频信号进行下变频，实现对宽带射频信号的信道化接收。Specifically, the working principle of the wideband channelized receiver is as follows: the wideband channelized receiver generates two sets of coherent optical frequency combs, and after obtaining the broadband radio frequency signal, one set of the optical frequency combs is used as a carrier to modulate the broadband radio frequency signal; Another set of optical frequency combs are used as optical local oscillators. By digitally coherently demodulating the broadband radio frequency signal modulated by each LO comb tooth and its corresponding carrier comb teeth, the different frequency segments of a broadband radio frequency signal are disassembled in the form of multi-channel, and for each channel range The radio frequency signal is down-converted to realize the channelized reception of the broadband radio frequency signal.
本发明实施例中，波长不同的两个光纤激光器向光梳生成模块发射两种波长不同的激光，分别用于生成信号光梳和本振光梳，其中信号光梳作为载波，用来调制宽带射频信号。由于两个光纤激光器的波长不同，生成的信号光梳和本振光梳的中心频率也就不同。光锁相稳频模块采用光锁相技术保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿频率对齐。In the embodiment of the present invention, two fiber lasers with different wavelengths emit two lasers with different wavelengths to the optical comb generation module, which are respectively used to generate a signal optical comb and a local oscillator optical comb, wherein the signal optical comb is used as a carrier to modulate the broadband radio frequency signal. Since the wavelengths of the two fiber lasers are different, the center frequencies of the generated signal comb and the local oscillator comb are also different. The optical phase locking and frequency stabilization module adopts the optical phase locking technology to keep the frequency alignment of the first signal comb teeth of the signal optical comb and the first local oscillator comb teeth of the local oscillator optical comb.
图2为本发明实施例提供的信号光梳和本振光梳的频谱示意图，如图2所示，假设信号光梳的中心频率为fsig，其梳齿频率间隔为δsig，则信号光梳的第k支信号梳齿的频率
本发明实施例提供的宽带信道化接收机，通过设置两个波长不同的光纤激光器分别用于对应生成信号光梳和本振光梳，提高了单个光梳的梳齿功率，进而提高了信道化信号的信噪比。同时利用光锁相稳频模块保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿频率对齐，使信号光梳和本振光梳中心频率左右两边的频率梳齿能够得到充分利用，提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求。而且本发明实施例提供的宽带信道化接收机未使用周期性滤波装置，避免了周期性滤波过程产生的滤波带宽较宽，中心波长漂移的问题。In the broadband channelized receiver provided by the embodiment of the present invention, by setting two fiber lasers with different wavelengths to respectively generate a signal optical comb and a local oscillator optical comb, the comb power of a single optical comb is improved, thereby improving the channelization. The signal-to-noise ratio of the signal. At the same time, the optical phase-locked frequency stabilization module is used to keep the frequency alignment of the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb, so that the frequency comb teeth on the left and right sides of the center frequency of the signal optical comb and the local oscillator optical comb are aligned. It can be fully utilized, the spectral utilization ratio of the comb teeth of the optical comb is improved, and the quantity requirement of the comb teeth of the optical comb is reduced. Moreover, the wideband channelized receiver provided by the embodiment of the present invention does not use a periodic filtering device, which avoids the problems of wide filtering bandwidth and center wavelength drift caused by the periodic filtering process.
基于上述实施例，该宽带信道化接收机中，光锁相稳频模块与线性调制及解复用模块连接；线性调制及解复用模块将信号光梳的第一信号梳齿的部分信号功率，以及本振光梳的第一本振梳齿的部分本振功率输入至光锁相稳频模块，以供光锁相稳频模块基于部分信号功率和部分本振功率，保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿的频率对齐。Based on the above-mentioned embodiment, in the wideband channelized receiver, the optical phase locking and frequency stabilization module is connected with the linear modulation and demultiplexing module; , and part of the LO power of the first LO comb teeth of the LO comb is input to the optical phase-locked frequency stabilization module, so that the optical phase-locked frequency stabilization module can maintain the signal optical comb based on part of the signal power and part of the local oscillator power. The frequencies of the first signal comb teeth and the first LO comb teeth of the local oscillator optical comb are aligned.
具体地，信号光梳和本振光梳经过线性调制及解复用模块之后，信号光梳的第一信号梳齿的部分信号功率和本振光梳的第一本振梳齿的部分本振功率输入到光锁相稳频模块中，例如信号光梳第一信号梳齿10％的信号功率和本振光梳第一本振梳齿10％的本振功率输入到光锁相稳频模块中，光锁相稳频模块参考上述部分信号功率和上述部分本振功率的相位差，采用光锁相技术使得信号光梳的第一信号梳齿和本振光梳的第一梳齿频率对齐。Specifically, after the signal optical comb and the local oscillator optical comb pass through the linear modulation and demultiplexing module, the partial signal power of the first signal comb tooth of the signal optical comb and the partial local oscillator of the first local oscillator comb tooth of the local oscillator optical comb The power is input into the optical phase-locked frequency stabilization module, for example, the 10% signal power of the first signal comb tooth of the signal optical comb and the 10% local oscillator power of the first local oscillator comb tooth of the local oscillator optical comb are input to the optical phase-locked frequency stabilization module , the optical phase-locking frequency stabilization module refers to the phase difference between the above-mentioned part of the signal power and the above-mentioned part of the local oscillator power, and adopts the optical phase-locking technology to make the first signal comb tooth of the signal optical comb and the first comb tooth of the local oscillator optical comb frequency aligned .
本发明实施例提供的宽带信道化接收机，通过将信号光梳的第一信号梳齿的部分信号功率和本振光梳的第一本振梳齿的部分本振功率输入到光锁相稳频模块中，利用光锁相稳频模块保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿频率对齐，使信号光梳和本振光梳中心频率左右两边的频率梳齿能够得到充分利用，提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求。In the broadband channelized receiver provided by the embodiment of the present invention, the partial signal power of the first signal comb tooth of the signal optical comb and the partial local oscillator power of the first local oscillator comb tooth of the local oscillator optical comb are input to the optical phase-locked stable In the frequency module, the optical phase locking and frequency stabilization module is used to maintain the frequency alignment of the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb, so that the signal optical comb and the center frequency of the local oscillator optical comb are on the left and right sides of the center frequency. The frequency comb teeth can be fully utilized, the spectral utilization ratio of the optical comb teeth is improved, and the quantity requirement of the optical comb teeth is reduced.
基于上述任一实施例，该宽带信道化接收机中，光锁相稳频模块分别与光梳生成模块的本振输出端口和线性调制及解复用模块的解复用输入端口连接；本振输出端口输出的本振光梳，经过光锁相稳频模块调整本振光梳的相位后，输入至解复用输入端口。Based on any of the above embodiments, in the wideband channelized receiver, the optical phase-locked frequency stabilization module is respectively connected to the local oscillator output port of the optical comb generation module and the demultiplexed input port of the linear modulation and demultiplexing module; The local oscillator optical comb output from the output port is input to the demultiplexing input port after the phase of the local oscillator optical comb is adjusted by the optical phase locking and frequency stabilization module.
具体地，光锁相稳频模块能够跟踪本振光梳的相位抖动，以实现信号光梳的第一信号梳齿和本振光梳的第一本振梳齿的频率对齐。进一步地，光锁相稳频模块以线性调制及解复用模块输出的第一信号梳齿的部分信号功率和第一本振梳齿的部分本振功率为参考，对本振输出端口输出的本振光梳的相位进行调整。Specifically, the optical phase locking and frequency stabilization module can track the phase jitter of the local oscillator optical comb, so as to realize the frequency alignment of the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb. Further, the optical phase-locked frequency stabilization module takes the partial signal power of the first signal comb tooth output by the linear modulation and demultiplexing module and the partial local oscillator power of the first local oscillator comb tooth as a reference, and compares the local oscillator output port to the local oscillator output port. The phase of the vibrating comb is adjusted.
本发明实施例中，光锁相稳频模块采用的光锁相技术是通过调整光梳相位来实现相位锁定，即“快环”。光锁相稳频模块通过跟踪信号光梳的第一信号梳齿与本振光梳的第一本振梳齿之间的相位差异，不断调整本振光梳的第一本振梳齿的相位，直至信号光梳的第一信号梳齿与本振光梳的第一本振梳齿的相位同步，即第一信号梳齿与第一本振光梳频率对齐。In the embodiment of the present invention, the optical phase locking technology adopted by the optical phase locking and frequency stabilization module realizes phase locking by adjusting the phase of the optical comb, that is, "fast loop". The optical phase-locked frequency stabilization module continuously adjusts the phase of the first LO comb teeth of the LO comb by tracking the phase difference between the first signal comb teeth of the signal comb and the first LO comb teeth of the LO comb , until the phases of the first signal comb teeth of the signal comb and the first local oscillator comb teeth of the local oscillator comb are synchronized, that is, the first signal comb teeth and the first LO comb teeth are aligned in frequency.
本发明实施例提供的宽带信道化接收机，通过光锁相稳频模块调整本振光梳的相位，以保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿频率对齐，使信号光梳和本振光梳中心频率左右两边的频率梳齿能够得到充分利用，提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求。In the broadband channelized receiver provided by the embodiment of the present invention, the phase of the local oscillator optical comb is adjusted by the optical phase locking and frequency stabilization module, so as to maintain the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb The frequency is aligned, so that the frequency combs on the left and right sides of the center frequency of the signal optical comb and the local oscillator optical comb can be fully utilized, which improves the spectral utilization rate of the optical comb and reduces the number of optical combs.
基于上述任一实施例，该宽带信道化接收机中，光锁相稳频模块与光梳生成模块的本振光纤激光器连接；光锁相稳频模块用于调整本振光纤激光器的输出频率。Based on any of the above embodiments, in the broadband channelized receiver, the optical phase-locking and frequency-stabilizing module is connected to the local oscillator fiber laser of the optical comb generation module; the optical phase-locking and frequency-stabilizing module is used to adjust the output frequency of the local oscillator fiber laser.
具体地，光锁相稳频模块采用的光锁相技术是通过调整本振光纤激光器的输出功率来实现相位锁定，即“慢环”。光锁相稳频模块通过跟踪信号光梳的第一信号梳齿与本振光梳的第一本振梳齿的频率漂移，不断调整本振光纤激光器的输出频率，使本振光梳的第一本振梳齿的频率越来越接近信号光梳的第一信号梳齿的频率，直至第一本振梳齿与第一信号梳齿频率对齐。Specifically, the optical phase locking technology adopted by the optical phase locking and frequency stabilization module realizes phase locking by adjusting the output power of the local oscillator fiber laser, that is, "slow loop". The optical phase-locked frequency stabilization module continuously adjusts the output frequency of the local oscillator fiber laser by tracking the frequency drift of the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb, so that the first signal of the local oscillator optical comb can be adjusted. The frequency of the LO comb teeth gets closer and closer to the frequency of the first signal comb teeth of the signal optical comb, until the first LO comb teeth align with the frequency of the first signal comb teeth.
本发明实施例提供的宽带信道化接收机，通过光锁相稳频模块与光梳生成模块的本振光纤激光器连接，调整本振光纤激光器的输出功率，以保持信号光梳的第一信号梳齿和本振光梳的第一本振梳齿频率对齐，使信号光梳和本振光梳中心频率左右两边的频率梳齿能够得到充分利用，提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求。In the broadband channelized receiver provided by the embodiment of the present invention, the optical phase locking and frequency stabilization module is connected to the local oscillator fiber laser of the optical comb generation module, and the output power of the local oscillator fiber laser is adjusted to maintain the first signal comb of the signal optical comb. The frequency of the teeth and the first LO comb teeth of the local oscillator optical comb are aligned, so that the frequency comb teeth on the left and right sides of the center frequency of the signal optical comb and the local oscillator optical comb can be fully utilized, which improves the spectral utilization rate of the comb teeth and reduces the The requirements for the number of comb teeth of the optical comb are satisfied.
基于上述任一实施例，该宽带信道化接收机中，光锁相稳频模块分别与光梳生成模块的本振输出端口和线性调制及解复用模块的解复用输入端口连接；本振输出端口输出的本振光梳，经过光锁相稳频模块调整本振光梳的相位后，输入至解复用输入端口；光锁相稳频模块与光梳生成模块的本振光纤激光器连接；光锁相稳频模块用于调整本振光纤激光器的输出频率。Based on any of the above embodiments, in the wideband channelized receiver, the optical phase-locked frequency stabilization module is respectively connected to the local oscillator output port of the optical comb generation module and the demultiplexed input port of the linear modulation and demultiplexing module; The local oscillator optical comb output from the output port is input to the demultiplexing input port after the phase of the local oscillator optical comb is adjusted by the optical phase locking and frequency stabilization module; the optical phase locking frequency stabilization module is connected to the local oscillator fiber laser of the optical comb generation module ; The optical phase-locked frequency stabilization module is used to adjust the output frequency of the local oscillator fiber laser.
图3为本发明实施例提供的宽带信道化接收机的结构示意图，如图3所示，光锁相稳频模块包括光耦合器、光电检测器、参考信号源、鉴频鉴相器、环路滤波器(Loop Filter，LP)、压控振荡器(Voltage Controlled Oscillator，VCO)、声光移频器(Acoustic OpticFrequency Shifter，AOFS)和压电陶瓷驱动器(Piezoelectric，PZT)。信号光梳和本振光梳经过线性调制及解复用模块之后，信号光梳的第一信号梳齿的部分信号功率和本振光梳的第一本振梳齿的部分本振功率通过光耦合器输入到光锁相稳频模块，信号光梳的其他信号梳齿和本振光梳的其他本振梳齿成对输入到正交混频及解调模块。例如，信号光梳第一信号梳齿10％的信号功率和本振光梳第一本振梳齿10％的本振功率输入到光锁相稳频模块中，信号光梳第一信号梳齿90％的信号功率和本振光梳第一本振梳齿90％的本振功率，以及信号光梳的其他信号梳齿和本振光梳的其他本振梳齿进入正交混频及解复用模块。FIG. 3 is a schematic structural diagram of a wideband channelized receiver provided by an embodiment of the present invention. As shown in FIG. 3 , an optical phase-locked frequency stabilization module includes an optical coupler, a photoelectric detector, a reference signal source, a frequency and phase detector, a loop Loop filter (Loop Filter, LP), Voltage Controlled Oscillator (Voltage Controlled Oscillator, VCO), Acoustic Optic Frequency Shifter (Acoustic Optic Frequency Shifter, AOFS) and piezoelectric ceramic driver (Piezoelectric, PZT). After the signal optical comb and the local oscillator optical comb pass through the linear modulation and demultiplexing module, the partial signal power of the first signal comb tooth of the signal optical comb and the partial local oscillator power of the first local oscillator comb tooth of the local oscillator optical comb pass through the optical comb. The coupler is input to the optical phase locking and frequency stabilization module, and other signal comb teeth of the signal optical comb and other local oscillator comb teeth of the local oscillator optical comb are input in pairs to the quadrature mixing and demodulation module. For example, 10% of the signal power of the first signal comb tooth of the signal optical comb and 10% of the local oscillator power of the first LO comb tooth of the local oscillator optical comb are input into the optical phase-locked frequency stabilization module, and the first signal comb tooth of the signal optical comb 90% of the signal power and 90% of the LO power of the first LO comb tooth of the LO comb, as well as other signal comb teeth of the signal comb and other LO comb teeth of the LO comb enter the quadrature mixing and solution reuse module.
光电检测器对信号光梳的第一信号梳齿与本振光梳的第一本振梳齿进行拍频，产生拍频信号，即信号光梳的第一信号梳齿与本振光梳的第一本振梳齿的频率差。鉴频鉴相器将拍频信号与参考信号源产生的标准正弦信号进行相位比较，产生的误差信号经过环路滤波器之后一路经过压控振荡器反馈至声光移频器，即“快环”；另一路经过压电陶瓷驱动器反馈至本振光纤激光器，即“慢环”。The photodetector performs beat frequency on the first signal comb tooth of the signal optical comb and the first local oscillator comb tooth of the local oscillator optical comb to generate a beat frequency signal, that is, the first signal comb tooth of the signal optical comb and the local oscillator optical comb. The frequency difference of the first LO comb teeth. The frequency discriminator compares the phase of the beat frequency signal with the standard sinusoidal signal generated by the reference signal source, and the generated error signal passes through the loop filter and then is fed back to the acousto-optic frequency shifter through the voltage-controlled oscillator all the way, that is, the "fast loop". ”; the other way is fed back to the local oscillator fiber laser through the piezoelectric ceramic driver, that is, the “slow loop”.
本发明实施例中，光锁相稳频模块采用复合光锁相环，通过同时设置“快环”和“慢环”来实现相位锁定。声光移频器通过跟踪信号光梳的第一信号梳齿与本振光梳的第一本振梳齿之间的相位差异，调整本振光梳的第一本振梳齿的相位，得到第一信号梳齿与第一本振梳齿的锁相范围。与此同时，通过压电陶瓷驱动器调整本振光纤激光器的输出频率，使得第一信号梳齿与第一本振梳齿的相位差始终保持在上述锁相范围之内。In the embodiment of the present invention, the optical phase-locked frequency stabilization module adopts a composite optical phase-locked loop, and phase locking is achieved by setting a "fast loop" and a "slow loop" at the same time. The acousto-optic frequency shifter adjusts the phase of the first LO comb teeth of the LO comb by tracking the phase difference between the first signal comb teeth of the signal comb and the first LO comb teeth of the LO comb to obtain The phase-locking range of the first signal comb teeth and the first local oscillator comb teeth. At the same time, the output frequency of the local oscillator fiber laser is adjusted by the piezoelectric ceramic driver, so that the phase difference between the first signal comb tooth and the first local oscillator comb tooth is always kept within the above-mentioned phase-locking range.
本发明实施例提供的宽带信道化接收机，通过采用复合光锁相环技术，消除了两个激光器频率漂移引起的相位噪声，使信号光梳和本振光梳之间具有稳定的相位关系，进而使得信号光梳和本振光梳中心频率左右两边的频率梳齿能够得到充分利用，提高了光梳梳齿的频谱利用率，降低了光梳梳齿的数量要求。The broadband channelized receiver provided by the embodiment of the present invention eliminates the phase noise caused by the frequency drift of the two lasers by using the composite optical phase-locked loop technology, so that the signal optical comb and the local oscillator optical comb have a stable phase relationship, Further, the frequency comb teeth on the left and right sides of the center frequency of the signal optical comb and the local oscillator optical comb can be fully utilized, the spectral utilization rate of the optical comb teeth is improved, and the quantity requirement of the optical comb teeth is reduced.
基于上述任一实施例，该宽带信道化接收机中，正交混频及解调模块对信号光梳的每一信号梳齿和本振光梳的每一本振梳齿进行正交混频和解调，得到每一通道的通道接收信号；其中，任一通道的带宽为本振光梳的本振梳齿频率间隔与信号光梳的信号梳齿频率间隔之差；任一通道内接收到的信号频率范围是基于该通道对应的本振梳齿与信号梳齿的频率差，以及该通道的带宽确定的。Based on any of the above embodiments, in the wideband channelized receiver, the quadrature frequency mixing and demodulation module performs quadrature mixing on each signal comb tooth of the signal optical comb and each local oscillator comb tooth of the local oscillator optical comb and demodulation to obtain the channel received signal of each channel; wherein, the bandwidth of any channel is the difference between the frequency interval of the local oscillator comb tooth of the local oscillator optical comb and the signal comb tooth frequency interval of the signal optical comb; any channel receives The obtained signal frequency range is determined based on the frequency difference between the local oscillator comb tooth corresponding to the channel and the signal comb tooth, and the bandwidth of the channel.
具体地，本发明实施例提供的宽带信道化接收机将一个宽带射频信号的不同频率段以多通道的形式拆解，并针对每个通道范围内的射频信号进行下变频。信号光梳和本振光梳经过解复用之后，成对进入正交混频及解调模块，信号光梳和本振光梳经过正交混频和解调之后，即可得到每一通道下变频后的中频信号。作为优选，正交混频及解调模块包含对应若干个信号通道的正交混频及解调子模块，每一个正交混频及解调子模块包含正交光混频器和两个平衡接收检测器。Specifically, the wideband channelized receiver provided by the embodiment of the present invention disassembles different frequency segments of a wideband radio frequency signal in the form of multiple channels, and performs down-conversion for the radio frequency signal within the range of each channel. After the signal optical comb and the local oscillator optical comb are demultiplexed, they enter the quadrature mixing and demodulation module in pairs. After the signal optical comb and the local oscillator optical comb are orthogonally mixed and demodulated, each channel can be obtained. Down-converted IF signal. Preferably, the quadrature mixing and demodulation module includes quadrature mixing and demodulation sub-modules corresponding to several signal channels, and each quadrature mixing and demodulation sub-module includes a quadrature optical mixer and two balancers receive detector.
由于光锁相稳频模块使得信号光梳与本振光梳具有稳定的相位关系，在此基础上，正交混频及解复用单元将通道带宽设置为本振光梳的本振梳齿频率间隔和信号光梳的信号梳齿频率间隔之差，以保证各个通道信号频谱的无缝拼接。进一步地，通过本振光梳的梳齿与其对应的信号光梳的梳齿的频率差以及上述通道带宽可以确定上述通道接收到的信号频率范围。Due to the optical phase locking and frequency stabilization module, the signal optical comb and the LO comb have a stable phase relationship. On this basis, the quadrature mixing and demultiplexing unit sets the channel bandwidth to the LO comb teeth of the LO comb. The difference between the frequency interval and the frequency interval of the signal comb teeth of the signal optical comb to ensure the seamless splicing of the signal spectrum of each channel. Further, the frequency range of the signal received by the channel can be determined by the frequency difference between the comb teeth of the local oscillator optical comb and the comb teeth of the corresponding signal optical comb and the channel bandwidth.
本发明实施例提供的宽带信道化接收机，通过对信号光梳和本振光梳进行正交混频及解调，避免了信号的混叠，以及周期滤波过程产生的滤波带宽宽，中心波长不稳的问题，同时通过合理设置通道带宽，保证了各个通道频谱的无缝拼接。The broadband channelized receiver provided by the embodiment of the present invention, by performing orthogonal mixing and demodulation on the signal optical comb and the local oscillator optical comb, avoids signal aliasing, and the filtering bandwidth generated by the periodic filtering process is wide, and the center wavelength The problem of instability, and at the same time, by setting the channel bandwidth reasonably, it ensures the seamless splicing of the spectrum of each channel.
基于上述任一实施例，该宽带信道化接收机中，该通道内接收到的信号频率范围fband如下式所示：Based on any of the above embodiments, in the wideband channelized receiver, the frequency range f band of the signal received in the channel is shown by the following formula:
式中，fΔ为第一信号梳齿和第一本振梳齿的固定频率差，k为该通道的序号，β为带宽。In the formula, f Δ is the fixed frequency difference between the first signal comb tooth and the first local oscillator comb tooth, k is the serial number of the channel, and β is the bandwidth.
具体地，信号光梳的第k支信号梳齿与本振光梳的第k支本振梳齿的频率差为fΔ+(k-1)(δlo-δsig)，当通道带宽为β＝δlo-δsig时，上述频率差可以等价为fΔ+(k-1)β。Specifically, the frequency difference between the k-th signal comb tooth of the signal optical comb and the k-th local oscillator comb tooth of the local oscillator optical comb is f Δ +(k-1)(δ lo -δ sig ), when the channel bandwidth is When β=δ lo -δ sig , the above-mentioned frequency difference can be equivalently expressed as f Δ +(k-1)β.
本发明实施例提供的宽带信道化接收机，通过任一通道本振光梳的梳齿与其对应的信号光梳的梳齿的频率差以及通道带宽，确定了该通道接收的信号的频率范围。In the broadband channelized receiver provided by the embodiment of the present invention, the frequency range of the signal received by the channel is determined by the frequency difference between the comb teeth of the local oscillator optical comb of any channel and the comb teeth of the corresponding signal optical comb and the channel bandwidth.
基于上述任一实施例，该宽带信道化接收机中，光梳生成模块包括信号光梳生成子模块和本振光梳生成子模块；其中信号光梳生成子模块用于基于信号光纤激光器发射的激光生成信号光梳，本振光梳生成子模块用于基于本振光纤激光器发射的激光生成本振光梳。Based on any of the above embodiments, in the broadband channelized receiver, the optical comb generation module includes a signal optical comb generation sub-module and a local oscillator optical comb generation sub-module; wherein the signal optical comb The laser generates a signal optical comb, and the local oscillator optical comb generation sub-module is used to generate a local oscillator optical comb based on the laser light emitted by the local oscillator fiber laser.
具体地，光梳生成模块包括信号光梳生成子模块和本振光梳生成子模块，信号光纤激光器向信号光梳生成子模块发射激光，经由信号光梳生成子模块生成信号光梳；本振光纤激光器向本振光梳生成子模块发射激光，经由本振光梳生成子模块生成本振光梳，其中，信号光纤激光器与本振光纤激光器发射的激光波长不同。作为优选，信号光梳生成子模块和本振光梳生成子模块均包括：电光相位调制器、强度调制器、移相器、电功率放大器、电耦合器和微波信号源，其中，信号光梳生成子模块和本振光梳生成子模块的微波信号源产生的电信号频率不同。Specifically, the optical comb generation module includes a signal optical comb generation submodule and a local oscillator optical comb generation submodule, the signal fiber laser emits laser light to the signal optical comb generation submodule, and the signal optical comb is generated through the signal optical comb generation submodule; The fiber laser emits laser light to the local oscillator optical comb generating sub-module, and the local oscillator optical comb is generated via the local oscillator optical comb generating sub-module, wherein the laser wavelengths emitted by the signal fiber laser and the local oscillator fiber laser are different. Preferably, both the signal optical comb generation sub-module and the local oscillator optical comb generation sub-module include: an electro-optical phase modulator, an intensity modulator, a phase shifter, an electric power amplifier, an electric coupler and a microwave signal source, wherein the signal optical comb generation sub-module The frequency of the electrical signal generated by the microwave signal source of the sub-module and the local oscillator optical comb generating sub-module is different.
本发明实施例提供的宽带信道化接收机，通过信号光梳子模块和本振光梳子模块分别生成信号光梳和本振光梳，设置波长不同的信号光纤激光器和本振光纤激光器，提高了单个光梳的梳齿功率，进而提高了信道化信号的信噪比。In the broadband channelized receiver provided by the embodiment of the present invention, the signal optical comb and the local oscillator optical comb are respectively generated by the signal optical comb module and the local oscillator optical comb module, and the signal optical fiber laser and the local oscillator optical fiber laser with different wavelengths are arranged, which improves the performance of the single optical comb. The comb power of the optical comb, thereby improving the signal-to-noise ratio of the channelized signal.
基于上述任一实施例，该宽带信道化接收机中，线性调制及解复用模块包括线性调制子模块和解复用子模块；其中，线性调制子模块用于将接收到宽带射频信号线性调制到信号光梳上，解复用子模块用于对本振光梳和线性调制后的信号光梳进行解复用。Based on any of the above embodiments, in the wideband channelized receiver, the linear modulation and demultiplexing module includes a linear modulation sub-module and a demultiplexing sub-module; wherein the linear modulation sub-module is used to linearly modulate the received wideband radio frequency signal to On the signal optical comb, the demultiplexing sub-module is used to demultiplex the local oscillator optical comb and the linearly modulated signal optical comb.
具体地，线性调制及解复用模块包括线性调制子模块和解复用子模块，作为优选，线性调制子模块包含电光线性强度调制器，解复用子模块包含两个掺铒光纤放大器和两个波导阵列光栅。信号光梳生成子模块产生信号光梳后，电光线性强度调制器将需要接收的宽带射频信号线性调制到信号光梳上，信号光梳作为载波，承载上述宽带射频信号。信号光梳和本振光梳进入到解复用模块之后，两个掺铒光纤放大器分别对信号光梳和本振光梳进行光功率的放大，然后两个波导阵列光栅分别对信号光梳和本振光梳进行滤波分离。Specifically, the linear modulation and demultiplexing module includes a linear modulation submodule and a demultiplexing submodule. Preferably, the linear modulation submodule includes an electro-optical linear intensity modulator, and the demultiplexing submodule includes two erbium-doped fiber amplifiers and two Waveguide Array Grating. After the signal optical comb generating sub-module generates the signal optical comb, the electro-optical linear intensity modulator linearly modulates the broadband radio frequency signal to be received onto the signal optical comb, and the signal optical comb acts as a carrier to carry the broadband radio frequency signal. After the signal optical comb and the local oscillator optical comb enter the demultiplexing module, two erbium-doped fiber amplifiers amplify the optical power of the signal optical comb and the local oscillator optical comb respectively, and then the two waveguide array gratings respectively amplify the signal optical comb and the local oscillator optical comb. The LO comb is used for filter separation.
本发明实施例提供的宽带信道化接收机，通过线性调制模块将接收的宽带射频信号调制到信号光梳上，解复用模块对信号光梳和本振光梳的解复用，将一个宽带射频信号的不同频率段以多通道的形式拆解，并针对每个通道范围内的射频信号进行下变频，实现对宽带射频信号的信道化接收。In the wideband channelized receiver provided by the embodiment of the present invention, the received wideband radio frequency signal is modulated onto the signal optical comb by the linear modulation module, and the demultiplexing module demultiplexes the signal optical comb and the local oscillator optical comb to convert a wideband radio frequency signal into a signal optical comb. Different frequency sections of the radio frequency signal are disassembled in the form of multi-channel, and down-converted for the radio frequency signal within the range of each channel to realize the channelized reception of the broadband radio frequency signal.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111901042A (en) * | 2020-08-11 | 2020-11-06 | 中国电子科技集团公司第四十四研究所 | Phase modulation-based large dynamic signal demodulation model method |
| CN111901041A (en) * | 2020-08-11 | 2020-11-06 | 中国电子科技集团公司第四十四研究所 | Large dynamic signal demodulation model device based on phase modulation |
| CN113055121A (en) * | 2021-03-16 | 2021-06-29 | 西南交通大学 | Large-broadband radio frequency interference cancellation method based on optical sub-channelization |
| CN113132015A (en) * | 2021-03-16 | 2021-07-16 | 中国电子科技集团公司第二十九研究所 | Optical radio frequency channelization realization method for even number of radio frequency channels |
| CN113992275A (en) * | 2021-11-15 | 2022-01-28 | 浙江大学 | A wideband signal receiving method and device based on photon channelized sampling |
| CN115276785A (en) * | 2021-04-30 | 2022-11-01 | 华为技术有限公司 | Spectrum processing device, spectrum processing method and related equipment |
| WO2024229602A1 (en) * | 2023-05-05 | 2024-11-14 | Huawei Technologies Co., Ltd. | Methods, apparatuses, and devices using a frequency comb for wide-band applications with narrow-band processing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794980A (en) * | 2014-01-27 | 2014-05-14 | 华东师范大学 | Method and device for measuring light frequency through high-power optical fiber optics frequency comb |
| US20150132005A1 (en) * | 2013-11-14 | 2015-05-14 | Lockheed Martin Corporation | High performance compact rf receiver for space flight applications |
| WO2017067617A1 (en) * | 2015-10-23 | 2017-04-27 | Elettronica S.P.A. | Improved photonic-assisted rf spectrum scanner for ultra-wide band receivers |
| US20170222721A1 (en) * | 2016-02-01 | 2017-08-03 | Vencore Labs, Inc. | Photonics-based channelization enabled by phase-sensitive amplification |
| CN109547115A (en) * | 2018-09-21 | 2019-03-29 | 上海交通大学 | High efficiency far end radio frequency signal down conversion system and method based on sideband light locking phase |
| WO2019147045A1 (en) * | 2018-01-24 | 2019-08-01 | 엘지전자(주) | Method for transmitting or receiving sounding reference signal in wireless communication system and apparatus therefor |
| CN110247711A (en) * | 2019-06-13 | 2019-09-17 | 中国电子科技集团公司第二十九研究所 | Signal modulating method and executive device, channelization method and processing system |
| CN110431766A (en) * | 2017-03-21 | 2019-11-08 | 比弗罗斯特通信有限公司 | Optical communication system, device and method including high-performance optical receiver |
-
2020
- 2020-03-06 CN CN202010151512.3A patent/CN111416667A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150132005A1 (en) * | 2013-11-14 | 2015-05-14 | Lockheed Martin Corporation | High performance compact rf receiver for space flight applications |
| CN103794980A (en) * | 2014-01-27 | 2014-05-14 | 华东师范大学 | Method and device for measuring light frequency through high-power optical fiber optics frequency comb |
| WO2017067617A1 (en) * | 2015-10-23 | 2017-04-27 | Elettronica S.P.A. | Improved photonic-assisted rf spectrum scanner for ultra-wide band receivers |
| US20170222721A1 (en) * | 2016-02-01 | 2017-08-03 | Vencore Labs, Inc. | Photonics-based channelization enabled by phase-sensitive amplification |
| CN110431766A (en) * | 2017-03-21 | 2019-11-08 | 比弗罗斯特通信有限公司 | Optical communication system, device and method including high-performance optical receiver |
| WO2019147045A1 (en) * | 2018-01-24 | 2019-08-01 | 엘지전자(주) | Method for transmitting or receiving sounding reference signal in wireless communication system and apparatus therefor |
| CN109547115A (en) * | 2018-09-21 | 2019-03-29 | 上海交通大学 | High efficiency far end radio frequency signal down conversion system and method based on sideband light locking phase |
| CN110247711A (en) * | 2019-06-13 | 2019-09-17 | 中国电子科技集团公司第二十九研究所 | Signal modulating method and executive device, channelization method and processing system |
Non-Patent Citations (3)
| Title |
|---|
| WEI JIANG等: "Wideband photonic microwave channelization and image-reject down-conversion", 《OPTICS COMMUNICATIONS》 * |
| 姚佳彤等: "基于锁相双光梳的多通道下变频技术", 《光通信技术》 * |
| 程悦: "微波光子信道化和变频技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111901042A (en) * | 2020-08-11 | 2020-11-06 | 中国电子科技集团公司第四十四研究所 | Phase modulation-based large dynamic signal demodulation model method |
| CN111901041A (en) * | 2020-08-11 | 2020-11-06 | 中国电子科技集团公司第四十四研究所 | Large dynamic signal demodulation model device based on phase modulation |
| CN111901041B (en) * | 2020-08-11 | 2022-04-05 | 中国电子科技集团公司第四十四研究所 | Large dynamic signal demodulation model device based on phase modulation |
| CN113055121A (en) * | 2021-03-16 | 2021-06-29 | 西南交通大学 | Large-broadband radio frequency interference cancellation method based on optical sub-channelization |
| CN113132015A (en) * | 2021-03-16 | 2021-07-16 | 中国电子科技集团公司第二十九研究所 | Optical radio frequency channelization realization method for even number of radio frequency channels |
| CN113055121B (en) * | 2021-03-16 | 2022-01-14 | 西南交通大学 | Large-broadband radio frequency interference cancellation method based on optical sub-channelization |
| CN113132015B (en) * | 2021-03-16 | 2022-05-17 | 中国电子科技集团公司第二十九研究所 | Optical radio frequency channelization realization method for even number of radio frequency channels |
| CN115276785A (en) * | 2021-04-30 | 2022-11-01 | 华为技术有限公司 | Spectrum processing device, spectrum processing method and related equipment |
| CN115276785B (en) * | 2021-04-30 | 2024-03-15 | 华为技术有限公司 | Spectrum processing device, spectrum processing method and related equipment |
| CN113992275A (en) * | 2021-11-15 | 2022-01-28 | 浙江大学 | A wideband signal receiving method and device based on photon channelized sampling |
| WO2024229602A1 (en) * | 2023-05-05 | 2024-11-14 | Huawei Technologies Co., Ltd. | Methods, apparatuses, and devices using a frequency comb for wide-band applications with narrow-band processing |
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