摘要：【中文】本发明提供了一种频率捷变MTI雷达测速方法，利用双发射接收通道同时发射接收频率不同的信号，然后通过信号处理将两个通道的信号进行信号级融合以提高探测性能，同时利用两个接收通道的信号相位信息进行速度解算，无需额外发射冗余波形用于速度模糊解算。本发明由于本发明采用同时双频发射，降低侦察接收机截获雷达发射信号的概率，并且同时双频接收可以有效对抗窄带瞄准式干扰，克服了现有MTI雷达中电子对抗能力弱的缺点，采用双通道信号级融合实现目标检测且无需冗余波形实现解速度模糊，克服了现有技术中通过发射冗余波形能量严重损耗的缺点，有效提高了目标的综合探测性能。 【EN】The invention provides a frequency agility MTI radar speed measurement method, which utilizes double transmitting and receiving channels to simultaneously transmit and receive signals with different frequencies, then performs signal level fusion on the signals of the two channels through signal processing to improve the detection performance, and simultaneously performs speed calculation by utilizing signal phase information of the two receiving channels without additionally transmitting redundant waveforms for speed ambiguity calculation. The invention adopts the simultaneous dual-frequency transmission, reduces the probability of the reconnaissance receiver intercepting the radar transmission signal, and simultaneously, the dual-frequency reception can effectively resist the narrow-band aiming type interference, overcomes the defect of weak electronic resistance in the existing MTI radar, realizes target detection by adopting dual-channel signal level fusion, does not need redundant waveforms to realize speed ambiguity resolution, overcomes the defect of serious energy loss by transmitting the redundant waveforms in the prior art, and effectively improves the comprehensive detection performance of the target.

摘要：【中文】本发明提供了一种两坐标舰载雷达信号级融合方法，将编队内多部同型雷达的回波数据进行预处理，然后将预处理后的数据统一传输到信号融合中心，并通过坐标变换到统一的坐标系下，然后利用改进的动态规划算法实现多部雷达目标回波数据的非相参积累来实现对微弱目标的有效探测。本发明大大降低了各舰向数据融合中心传输的数据量，具有提高微弱目标检测性能的优点；有效解决了编队内各舰与数据融合中心传输数据量巨大及动态规划方法能量扩散现象导致目标参数测量精度低和多部同型雷达信号级融合协同探测空间配准难的问题，为实现复杂海杂波环境下微弱目标的探测提供了有力的技术支撑。 【EN】The invention provides a signal level fusion method of a two-coordinate carrier-based radar, which is characterized in that echo data of multiple same-type radars in a formation are preprocessed, then the preprocessed data are uniformly transmitted to a signal fusion center, the coordinate is converted into a uniform coordinate system, and then the improved dynamic programming algorithm is utilized to realize the non-coherent accumulation of the echo data of multiple radar targets so as to realize the effective detection of weak targets. The invention greatly reduces the data volume transmitted from each ship to the data fusion center, and has the advantage of improving the detection performance of weak targets; the problems that the data transmission quantity of each ship and a data fusion center in a formation is large, and the target parameter measurement precision is low due to the energy diffusion phenomenon of a dynamic planning method, and the registration of a fusion collaborative detection space of multiple homotype radar signals is difficult are effectively solved, and powerful technical support is provided for the detection of weak targets in a complex sea clutter environment.

摘要：【中文】本发明提供了一种自适应相位调整的LVDS延时电路，多级延时电路输入信号为LVDS输入数据，通过多路选择器选择输出几级延时，多路选择器的输出信号是经过延时选择后的数据信号，数据信号是自适应判定的输入信号，自适应判定确定时钟对齐数据中间窗口的延时参数，并将延时参数输出，作为多路选择器的控制信号。本发明减少了确定合适延时参数的迭代次数，减小了延时电路的规模和复杂度，提高了时序收敛速度，消除了时钟切换带来的去毛刺问题；能自动找到合适的延时参数，不需要用户反复迭代测试；能准确找到数据中间窗口对准时钟边沿的延时值，大大提高了采样数据的稳定性。 【EN】The invention provides an adaptive phase adjustment LVDS delay circuit, wherein input signals of a multi-stage delay circuit are LVDS input data, a multiplexer selects and outputs several stages of delay, the output signal of the multiplexer is a data signal subjected to delay selection, the data signal is an input signal subjected to adaptive judgment, the adaptive judgment determines delay parameters of a clock alignment data intermediate window, and the delay parameters are output to serve as control signals of the multiplexer. The invention reduces the iteration times of determining proper delay parameters, reduces the scale and complexity of a delay circuit, improves the time sequence convergence speed and eliminates the deburring problem caused by clock switching; the appropriate delay parameter can be automatically found without repeated iterative tests by the user; the delay value of the data middle window aligned to the clock edge can be accurately found, and the stability of the sampled data is greatly improved.

摘要：【中文】本发明提供了一种基于长度约束的卫星导航着陆完好性监测方法，先任意选择主节点与基准卫星，然后通过计算多节点间双差值和伪距双差残差，从而进行多节点综合判断。本发明采用双差的方式进行完好性监测，由于双差观测量消除了大部分公共误差且转化得到的距离理论双差值精度高，因此能够更好的对故障进行监测识别。在现有算法运行之前执行，并不影响现有算法体系，可与现有算法同时运行，提升系统的完好性监测能力。仅涉及双差、坐标转换、比对等运算，算法简单，占用运算资源较小。 【EN】The invention provides a satellite navigation landing integrity monitoring method based on length constraint. According to the invention, integrity monitoring is carried out in a double-difference mode, and because the double-difference observed quantity eliminates most public errors and the distance theory double-difference value obtained by conversion has high precision, faults can be better monitored and identified. The method is executed before the existing algorithm is operated, the existing algorithm system is not influenced, the method can be operated simultaneously with the existing algorithm, and the integrity monitoring capability of the system is improved. Only double-difference, coordinate conversion, comparison and other operations are involved, the algorithm is simple, and the occupied operation resources are small.

摘要：【中文】本发明提供了一种基于无线网络传输的TDC同步校准全数字阵列雷达前端，信息中心完成上行控制信息传输分配和下行各数字TR组件回波数据的收集，数字TR组件中，接收信息中心分发的信息，依次由DMux电路对上行控制信号进行解析，再由FPGA结合DA完成通道波形产生，经开关完成收发通道切换，由滤波进行信号滤波处理，经放大器放大后，最终由天线辐射至空间中，实现前端多通道的接收多波束处理。本发明不受布局限制，由FPGA控制时钟分配电路实现各通道DA、AD时钟的延时控制，系统具有实时性高、处理简单、低成本等特点。 【EN】The invention provides a TDC synchronous calibration all-digital array radar front end based on wireless network transmission, an information center completes uplink control information transmission distribution and collection of echo data of downlink digital TR components, information distributed by the information center is received in the digital TR components, uplink control signals are analyzed by a DMux circuit in sequence, channel waveform generation is completed by combining an FPGA and a DA, receiving and transmitting channel switching is completed by a switch, signal filtering processing is performed by filtering, and the signals are amplified by an amplifier and finally radiated into space by an antenna to realize front end multi-channel receiving multi-beam processing. The invention is not limited by the layout, the time delay control of DA and AD clocks of each channel is realized by the FPGA control clock distribution circuit, and the system has the characteristics of high real-time performance, simple processing, low cost and the like.

摘要：【中文】本发明提供了一种基于非线性有源天线的相控阵前端，频率源产生发射基带信号，由功分网络分配至收发阵列，发射基带信号在收发阵列中由带通滤波器进行滤波后，与注入锁相阵列产生的本振信号进行混频，再经带通滤波器滤波，产生发射信号，经收发开关的选择作用后，由功率放大器放大，再经环形器传输至天线并辐射至空间。本发明通过对本振信号相位的控制，实现了波束指向的控制，一方面减少了阵面的传输损耗，提高了阵面的效率，另一方面，采用微波集成芯片或微型微波集成芯片实现注入锁相阵列的芯片化设计，提升了阵面的集成度，降低了系统的成本，且具备高集成度、低成本的特征。 【EN】The invention provides a phased array front end based on a nonlinear active antenna.A frequency source generates a transmitting baseband signal which is distributed to a receiving and transmitting array by a power distribution network, the transmitting baseband signal is filtered by a band-pass filter in the receiving and transmitting array, then is mixed with a local oscillation signal generated by an injection phase-locked array, is filtered by a band-pass filter to generate a transmitting signal, is amplified by a power amplifier after the selection action of a receiving and transmitting switch, and then is transmitted to an antenna by a circulator and radiated to a space. The invention realizes the control of beam pointing by controlling the phase of the local oscillator signal, on one hand, the transmission loss of the array surface is reduced, and the efficiency of the array surface is improved, on the other hand, the invention adopts a microwave integrated chip or a micro microwave integrated chip to realize the chip design of the injection phase-locked array, thereby improving the integration level of the array surface, reducing the cost of the system, and having the characteristics of high integration level and low cost.

摘要：【中文】本发明提供了一种300‑2000MHz宽带数字TR组件，发射状态下，FPGA通过频率控制字、波形控制字、初相控制字控制DDS产生中频为400MHz的相应波形信号，经混频器与本振分配电路中的1600MHz或4600MHz的低本振信号产生频率分别为2000MHz或5000MHz的高中频信号，经开关滤波组的滤波选择作用，与本振分配电路中的频率分别为2300‑3000MHz或6‑7GHz的高本振信号完成混频作用，分别产生频率覆盖300‑1000MHz和1000‑2000MHz的发射信号，并由环形器完成收发切换作用。本发明将300‑2000MHz的频率范围划分为两个频段分别进行变频处理，并最终实现低速ADC和DAC分别实现波形产生和回波采样处理，降低了数字组件预处理的难度，避免变频引入的带内杂散，组件具有低成本、集成度高、设计灵活等优势。 【EN】The invention provides a 300-plus-2000 MHz broadband digital TR component, wherein in a transmitting state, an FPGA controls a DDS to generate a corresponding waveform signal with an intermediate frequency of 400MHz through a frequency control word, a waveform control word and an initial phase control word, generates a high and medium frequency signal with a frequency of 2000MHz or 5000MHz through a mixer and a low local oscillation signal with a frequency of 1600MHz or 4600MHz in a local oscillation distribution circuit, completes a mixing action with the high local oscillation signal with a frequency of 2300-plus-3000 MHz or 6-7GHz in the local oscillation distribution circuit through a filtering selection action of a switch filtering group, generates transmitting signals with a frequency covering 300-plus-2000 MHz and 1000-plus-2000 MHz respectively, and completes a transceiving switching action through a circulator. The frequency range of 300-2000MHz is divided into two frequency ranges for frequency conversion processing respectively, and finally the low-speed ADC and the DAC realize waveform generation and echo sampling processing respectively, so that the preprocessing difficulty of a digital assembly is reduced, in-band spurious introduced by frequency conversion is avoided, and the assembly has the advantages of low cost, high integration level, flexible design and the like.

摘要：【中文】本发明提供了一种基于二次调制解调的大规模扩频解扩数字阵列，发射阵列实现n*m个发射激励合成信号的产生，并在该合成信号中体现了各路信号的加权信息，阵面上采用两次解调的形式实现了所有发射信号的分离；接收阵列将所有通道回波信号利用编码信号进行两级调制将各通道信号进行了编码处理，合成一路后利用一路ADC进行采集，并在数字域采用编码信号的两级解调实现了各通道信号的分离，两级调制/解调有效扩展了阵面的规模，利用现有有限的编码信号长度，实现了大规模全数字阵列的设计，并且大幅度降低了数字通道的成本和规模，降低了对阵面信号传输一致性和同步性的要求。 【EN】The invention provides a large-scale spread spectrum and de-spread spectrum digital array based on secondary modulation and demodulation, wherein the transmitting array realizes the generation of n x m transmitting excitation synthetic signals, the weighting information of each path of signal is embodied in the synthetic signals, and the separation of all transmitting signals is realized on a array surface by adopting a form of twice demodulation; the receiving array carries out two-stage modulation on all channel echo signals by using the coding signals to carry out coding processing on each channel signal, one channel is synthesized and then is acquired by using one channel ADC, and two-stage demodulation of the coding signals is adopted in a digital domain to realize the separation of each channel signal.

摘要：【中文】本发明提供了一种应用于稀疏布阵宽带相控阵的栅瓣解模糊方法，稀疏布阵宽带相控阵在工作带宽范围内，将工作带宽的频率等分，稀疏布阵宽带相控阵发射频率为F1的发射信号，接收回波；切换稀疏布阵宽带相控阵发射频率依次为F2—FN，依次接收回波，回波此时若无目标，则目标存在于原栅瓣位置；存在目标，则目标存在于原接收信号位置。本发明的栅瓣判别的计算过程与普通雷达搜索跟踪方法相同，并不增加额外运算量，故存在方法简单、实用，且运算量小，系统简单的特点；宽带雷达系统跳频，具备低截获、抗干扰能力强的特征；宽带雷达系统跳频可以获得抗多径、低角性能好的优势。 【EN】The invention provides a grating lobe ambiguity resolution method applied to a sparsely-arranged broadband phased array, wherein the sparsely-arranged broadband phased array equally divides the frequency of a working bandwidth within the working bandwidth range, transmits a transmitting signal with the frequency of F1 and receives an echo; switching the transmitting frequency of the sparse array broadband phased array to be F2-FN in sequence, receiving echoes in sequence, and if no target exists in the echoes, enabling the target to exist at the position of an original grating lobe; if the target exists, the target exists at the position of the original received signal. The calculation process of the grating lobe discrimination is the same as that of a common radar searching and tracking method, and extra calculation amount is not increased, so that the method has the characteristics of simplicity, practicability, small calculation amount and simple system; the broadband radar system has the characteristics of low interception and strong anti-interference capability in frequency hopping; the broadband radar system can obtain the advantages of multipath resistance and good low-angle performance by frequency hopping.

摘要：【中文】本发明提供了一种基于微波延迟器的雷达多通道外校准系统，将外校准系统放置在收发阵面的远场位置，外校准系统的开关用于实现校准天线收发状态的切换，雷达校准工作状态下，发射通道校准时，由微波源产生校准发射信号，经开关选通至发射功放完成放大，经环形器传输至功分网络，经功分后传输至收发阵面的各发射通道，仅待校准发射通道将功分后的校准发射放大后，由天线辐射至空间。本发明相对于传统外校准方案，本发明摒弃了附加的校准通道，而复用了雷达前端的微波源和回波采集通道，其中微波源实现校准信号的产生，回波采集通道可完成校准信号的采样，降低了系统的设计复杂度。 【EN】The invention provides a radar multichannel external calibration system based on a microwave delayer, which is characterized in that the external calibration system is placed at a far field position of a receiving and transmitting array surface, a switch of the external calibration system is used for realizing the switching of the receiving and transmitting states of a calibration antenna, a calibration transmitting signal is generated by a microwave source when a transmitting channel is calibrated in a radar calibration working state, the calibration transmitting signal is gated to a transmitting power amplifier through the switch to complete amplification, the calibration transmitting signal is transmitted to a power division network through a circulator and is transmitted to each transmitting channel of the receiving and transmitting array surface after power division, and the antenna radiates to a space after the calibrated transmitting channel amplifies the calibrated transmitting signal after power division. Compared with the traditional external calibration scheme, the method has the advantages that the additional calibration channel is abandoned, the microwave source and the echo acquisition channel at the front end of the radar are multiplexed, the microwave source realizes the generation of the calibration signal, the echo acquisition channel can finish the sampling of the calibration signal, and the design complexity of the system is reduced.