A hybrid analog-digital millimeter wave phased array multi-stream telemetry receiving device

Abstract

The invention discloses an analog-to-digital hybrid millimeter wave phased array multi-stream telemetry receiving device, wherein an array antenna receives multi-stream telemetry signals radiated by a space target, a hybrid receiving and collecting device performs a first processing on a preselected narrowband telemetry signal in the telemetry signal to obtain a first signal, and performs a second processing on the telemetry signals of the remaining carrier frequencies to obtain a second signal, a target capture and tracking device adjusts the beam pointing direction of the array antenna, and forms a multi-beam signal and a sum and difference signal based on the first signal to capture and track the space target, and uses the sum signal as a third signal, and a telemetry baseband device demodulates the second signal and the third signal to obtain telemetry data transmitted by the space target; the present invention processes the preselected narrowband telemetry signal and the remaining telemetry signals in the telemetry signal by the hybrid receiving and collecting device respectively, thereby realizing the capture of high dynamic targets and the reception of telemetry signals with multiple carrier frequencies, multiple code rates and multiple systems, thereby reducing construction costs, simplifying structures and improving reliability.

Description

Technical Field

[0001] The invention relates to the field of radio measurement, and in particular to an analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device. Background Art

[0002] In the telemetry mission of high-speed and low-flying targets, ground telemetry equipment can use millimeter wave phased array antennas. On the one hand, millimeter waves can overcome the blackout problem caused by the plasma sheath effect. On the other hand, phased array antennas can simultaneously form multiple beams to search and scan in the target airspace to achieve rapid capture of space targets. When a space target simultaneously transmits s (s≥2) telemetry signals with different carrier frequencies, for example, the telemetry signal with carrier frequency f1 transmits low-bitrate telemetry data (1Mbit / s), and the telemetry signal with carrier frequency f2 transmits high-bitrate telemetry data (1Gbit / s), due to the large available bandwidth of the millimeter wave band (such as the Ka band frequency range of 26.5GHz to 40GHz), f1 and f2 can be flexibly set within the system working bandwidth. On the one hand, a larger interval is set to avoid adjacent channel interference, and on the other hand, the flexibly changing carrier frequency can prevent interception by the enemy. In this way, the bandwidth occupied by the two telemetry signals (including the interval between streams) is very large. Limited by the level of existing analog-to-digital sampling devices, it is difficult and costly to use one analog-to-digital sampler to simultaneously perform broadband sampling on the two telemetry signals, and the adaptability to large dynamic signals is limited. The existing system generally uses two analog-to-digital samplers to sample the two signal streams respectively, the narrowband analog-to-digital sampler samples the low-bitrate telemetry signal, and the wideband analog-to-digital sampler samples the high-bitrate telemetry signal. However, for large-scale multi-beam phased array systems, there are many receiving channels. If each channel uses two analog-to-digital samplers to sample the high and low bitrate telemetry signals respectively, on the one hand, the broadband analog-to-digital sampler device is costly and it is difficult to ensure the consistency of amplitude and phase, resulting in high cost and difficulty in engineering implementation. On the other hand, the amount of sampled data is huge, and the data transmission and data processing resources are consumed a lot. Summary of the invention

[0003] In view of the above problems, the present application provides an analog-to-digital hybrid millimeter-wave phased array multi-stream telemetry receiving device, which is described in detail below.

[0004] According to the first aspect, an embodiment provides an analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device, including:

[0005] An array antenna is used to receive telemetry signals radiated by a space target and preprocess the telemetry signals; the telemetry signals include s telemetry signals with different carrier frequencies and non-overlapping spectra; among the s telemetry signals with different carrier frequencies and non-overlapping spectra, a narrowband telemetry signal with one carrier frequency is preselected for target capture and tracking, which is recorded as stream 1; the telemetry signals with the remaining (s-1) carrier frequencies except stream 1 are recorded as stream 2, ..., stream s, respectively; wherein s≥2;

[0006] The hybrid receiving and collecting device is used to perform a first processing on stream 1 in the preprocessed telemetry signal, and output an array digital signal of stream 1, which is recorded as a first signal; perform a second processing on streams 2 to s in the preprocessed telemetry signal, respectively, and output (s-1) paths of synthesized digital signals, which are recorded as second signals;

[0007] A target acquisition and tracking device, configured to receive the first signal, adjust the beam pointing of the array antenna, and form a multi-beam signal and a sum and difference signal based on the first signal to acquire and track the space target;

[0008] The target acquisition and tracking device is further used to perform processing including at least digital phase shifting and beam forming on the first signal according to the acquired spatial target pointing, to obtain and output a sum beam signal of stream 1, which is recorded as a third signal;

[0009] The telemetry baseband device is used to receive the second signal and the third signal, and demodulate the second signal and the third signal to obtain the telemetry data transmitted by the space target.

[0010] In one embodiment, the array antenna comprises:

[0011] m sub-arrays, wherein each sub-array is used to pre-process and simulate the received telemetry signal and output one analog synthesized signal; the one analog synthesized signal includes s telemetry signals with different carrier frequencies; wherein the pre-processing includes at least: low-noise amplification processing, delay processing and attenuation processing.

[0012] In one embodiment, each of the subarrays comprises: n antenna units, n low noise amplifiers, n adjustable delay lines, n first digitally controlled attenuators and 1 first synthesizer, wherein the antenna units, the low noise amplifiers, the adjustable delay lines and the first digitally controlled attenuators correspond one to one;

[0013] The antenna unit is used to receive the telemetry signal radiated by the space target;

[0014] The low noise amplifier is used to amplify the telemetry signal received by the corresponding antenna unit;

[0015] The adjustable delay line is used to delay the corresponding telemetry signal after amplification, and the delay amount is determined by the target capture and tracking device;

[0016] The first digitally controlled attenuator is used to perform attenuation processing on the corresponding delayed telemetry signal, and the attenuation amount of the attenuation processing is determined by the target acquisition and tracking device;

[0017] The first synthesizer is used to synthesize the telemetry signals output by the n first digitally controlled attenuators to obtain an analog synthesized signal.

[0018] In one embodiment, the hybrid receiving and collecting device includes:

[0019] m splitters, each of which is used to split the analog synthetic signal into s signals, each signal including s telemetry signals with different carrier frequencies, and the s signals are respectively sent to the first signal receiving and collecting module and (s-1) second signal receiving and collecting modules to process stream 1, stream 2, ..., stream s respectively;

[0020] A first signal receiving and collecting module is used to perform first processing on the stream 1 in the s signals output by each splitter to obtain corresponding m sub-array digital signals; the first signal is composed of the m sub-array digital signals corresponding to the stream 1; the first processing at least includes: a first down-conversion processing, a first filtering processing and a first analog-to-digital sampling processing;

[0021] (s-1) second signal receiving and collecting modules correspond one-to-one to stream 2, ..., stream s in the s signals; each of the second signal receiving and collecting modules is used to perform a second processing on the corresponding 1 signal output by each of the splitters to obtain an array synthetic digital signal; the second signal is composed of (s-1) array synthetic digital signals; the second processing includes at least: phase shift processing, synthesis processing, second down-conversion processing, second filtering processing and second analog-to-digital sampling processing.

[0022] In one embodiment, the first signal receiving and collecting module includes: m sub-array signal receiving and collecting units, each sub-array signal receiving and collecting unit includes: a first down-conversion circuit, a first filtering circuit and a first analog-to-digital sampling circuit; the m sub-array signal receiving and collecting units correspond one-to-one to the m splitters;

[0023] The first down-conversion circuit is used to perform a first down-conversion process on the stream 1 outputted by the corresponding splitter, and the frequency of the local oscillator signal of the first down-conversion process is determined according to the carrier frequency of the stream 1;

[0024] The first filtering circuit is used to filter the signal after the first down-conversion processing, and the bandwidth of the filtering processing is determined according to the bandwidth of the stream 1;

[0025] The first analog-to-digital sampling circuit is used to perform analog-to-digital sampling on the signal after filtering to obtain a sub-array digital signal. The sampling rate of the analog-to-digital sampling is determined according to the bandwidth of the stream 1.

[0026] In one embodiment, the second signal receiving and collecting module comprises: m phase shifters, a synthesizer, a second down-conversion processing circuit, a second filtering processing circuit, and a second analog-to-digital sampling processing circuit; the m phase shifters correspond one-to-one to the m splitters;

[0027] Each of the phase shifters is used to perform phase shift processing on one signal in the stream 2, ..., stream s output by the corresponding splitter, and the phase shift value of the phase shift processing is determined by the target acquisition and tracking device according to the beam pointing and the carrier frequency of the corresponding telemetry signal;

[0028] The synthesizer is used to synthesize the signals output by the m phase shifters to obtain one synthesized signal;

[0029] The second down-conversion processing circuit is used to perform a second down-conversion processing on the 1-way synthesized signal output by the synthesizer, and the frequency of the local oscillator signal processed by the second down-conversion processing is determined according to the carrier frequency of the corresponding 1-way signal in stream 2, ..., stream s;

[0030] The second filtering circuit is used to filter the signal after the second down-conversion processing, and the filtering bandwidth of the filtering processing is determined according to the bandwidth of a corresponding signal in stream 2, ..., stream s;

[0031] The second analog-to-digital sampling processing circuit is used to perform analog-to-digital sampling on the filtered signal to obtain a digital signal. The sampling rate of the analog-to-digital sampling is determined according to the bandwidth of a corresponding signal in stream 2, ..., stream s.

[0032] In one embodiment, the hybrid receiving and collecting device further includes:

[0033] A frequency synthesizer is used to generate s local oscillator signals according to the carrier frequency of the telemetry signal, and output the s local oscillator signals to the first signal receiving and acquisition module and the second signal receiving and acquisition module for corresponding first down-conversion processing and second down-conversion processing; wherein, one local oscillator signal corresponds to a carrier frequency of the telemetry signal.

[0034] In one embodiment, the target capture and tracking device comprises:

[0035] A beam scanning control unit, used to control the beam pointing of the array antenna to scan in the target airspace, wherein the number of scanning points is q, and the q scanning points can cover the target airspace;

[0036] A multi-beam forming unit, used to determine the delay amount of m×n adjustable delay lines according to the multi-beam pointing corresponding to each scanning point scanning the target airspace, and delay the m×n adjustable delay lines according to the delay amount; and also used to determine p groups of phase shift values ​​of the m sub-array digital signals according to the beam pointing of the array antenna and the carrier frequency of the stream 1, and perform digital phase shift and beam forming processing on the m sub-array digital signals according to the phase shift values ​​to generate p-channel signals corresponding to each scanning point; the p-channel signals correspond to the p beams of the array antenna;

[0037] A multi-beam detection unit, used to detect the energy of the p-channel signals corresponding to each scanning point, obtain p energy detection values ​​corresponding to each scanning point, perform surface fitting on the p energy detection values, use the maximum value of the surface fitting as the detection result of the corresponding scanning point, and extract the corresponding beam pointing; detect the signals corresponding to q scanning points, obtain q detection results and corresponding beam pointing;

[0038] A target capture unit is used to compare the q detection results to obtain a maximum value; when the maximum value is greater than a preset threshold, output a beam pointing corresponding to the maximum value, and use the output beam pointing as a target pointing to capture a space target;

[0039] Sum and difference beamforming unit, where:

[0040] Determine the delay amount of the m×n adjustable delay lines according to the beam pointing output by the target acquisition unit, and delay the m×n adjustable delay lines according to the delay amount; determine the digital phase shift value of the m sub-array digital signals according to the beam pointing and the carrier frequency of the stream 1 signal; obtain the sum beam signal of the stream 1 after performing digital phase shift and beam forming processing on the m sub-array digital signals; shift the beam pointing output by the target acquisition unit in the azimuth direction by Δ i A and -Δ i A , determining the digital phase shift values ​​of the m subarray digital signals according to the offset beam pointing and the carrier frequency of the stream 1, performing digital phase shift and beam forming processing on the m subarray digital signals, obtaining offset beam signals in two azimuth directions, and then performing subtraction processing to obtain the azimuth difference beam signal of the stream 1; offsetting the beam pointing output by the target acquisition unit by Δ in the pitch direction i E , -Δ i E , according to the offset beam pointing and the carrier frequency of the stream 1 signal, the digital phase shift values ​​of the m subarray digital signals are determined, and after digital phase shift and beamforming processing are performed on the m subarray digital signals, offset beam signals in two elevation directions are obtained and then subtracted to obtain the elevation difference beam signal of the stream 1; the sum beam signal of the stream 1 is the third signal; wherein, Δ i A is the azimuth angle value equal to half of the half-power width of the array antenna and beam in the azimuth direction, Δ i E is the elevation angle value equal to half of the half-power width of the array antenna and beam in the elevation direction;

[0041] an angle error extraction unit, configured to perform a cross-correlation operation on the sum beam signal of the stream 1 and the azimuth difference beam signal of the stream 1 to obtain an azimuth angle error value of the stream 1; the angle error extraction unit is further configured to perform a cross-correlation operation on the sum beam signal of the stream 1 and the elevation difference beam signal of the stream 1 to obtain an elevation angle error value of the stream 1;

[0042] A target tracking unit, configured to adjust the current beam pointing according to the azimuth error value of the stream 1 and the elevation error value of the stream 1, so that the adjusted beam points to the direction of the space target, so as to track the space target, and output the beam pointing as the target pointing;

[0043] The beam control unit is used to determine the phase shift value of the phase shifter in the (s-1) second signal receiving and collecting modules according to the target orientation output by the target tracking unit and the carrier frequencies of stream 2, ..., stream s.

[0044] In one embodiment, the array antenna is a millimeter wave array antenna; the telemetry signal radiated by the space target and received by the array antenna is a millimeter wave telemetry signal having spectra of at least two different carrier frequencies that do not overlap with each other.

[0045] In one embodiment, the telemetry baseband device is used to demodulate the second signal and the third signal, including:

[0046] Acquire preset telemetry signal parameters, and perform synchronization and demodulation processing on the second signal and the third signal according to the preset signal parameters.

[0047] According to the analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device of the above embodiment, the array antenna receives a multi-stream telemetry signal radiated by a space target and containing at least two non-overlapping spectrums of different carrier frequencies. The hybrid receiving and collecting device performs a first processing on a preselected narrowband telemetry signal in the telemetry signal to obtain a subarray digital signal of the preselected narrowband telemetry signal as a first signal, and performs a second processing on telemetry signals of the remaining carrier frequencies except the preselected narrowband telemetry signal to obtain an array synthetic signal of the other telemetry signals as a second signal. The target capture and tracking device adjusts the wave of the array antenna. Beam pointing, and based on the first signal, multi-beam signals and sum and difference signals are formed to realize the capture and tracking of space targets. The formed sum signal is used as the third signal, and the telemetry baseband device demodulates the second signal and the third signal to obtain the telemetry data transmitted by the space target; therefore, the present invention processes the pre-selected narrowband telemetry signal and the remaining telemetry signals in the telemetry signal separately through the hybrid receiving and acquisition device, which can realize the capture of high dynamic targets and the reception of telemetry signals with multiple carrier frequencies, multiple code rates and multiple systems, greatly reduces the construction cost, simplifies the structure and improves the reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of an analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of the structure of a sub-array in a millimeter wave array antenna according to an embodiment;

[0050] Figure 3 A schematic diagram of the structure of a hybrid receiving and collecting device according to an embodiment;

[0051] Figure 4 A schematic diagram of the structure of a first signal receiving and collecting module according to an embodiment;

[0052] Figure 5 A schematic diagram of the structure of a second signal receiving and collecting module according to an embodiment;

[0053] Figure 6 A schematic diagram of the structure of a target capture and tracking device according to an embodiment;

[0054] Figure 7 Schematic diagram of 5 beams with different directions;

[0055] Figure 8 A schematic diagram of an example of an array antenna. DETAILED DESCRIPTION

[0056] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0057] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0058] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0059] Please refer to Figure 1 , a structural schematic diagram of an analog-to-digital hybrid millimeter wave phased array multi-stream telemetry receiving device is provided, and the analog-to-digital hybrid millimeter wave phased array multi-stream telemetry receiving device includes: an array antenna 101, a hybrid receiving and collecting device 102, a target capture and tracking device 103 and a telemetry baseband device 104. Each device is described separately below.

[0060] The array antenna 101 is used to receive telemetry signals radiated by space targets and preprocess the telemetry signals, wherein the telemetry signals include s telemetry signals with different carrier frequencies whose spectra do not overlap with each other; among the telemetry signals with different carrier frequencies whose spectra do not overlap with each other, a narrowband telemetry signal with one carrier frequency is preselected for target capture and tracking, which is recorded as stream 1; the telemetry signals with the remaining (s-1) carrier frequencies except stream 1 are recorded as stream 2, ..., stream s, respectively; wherein s≥2. In one embodiment, the preprocessing of the telemetry signals includes at least: low noise amplification processing, delay processing and attenuation processing.

[0061] In some embodiments, the array antenna 101 may be a millimeter wave array antenna, that is, the telemetry signal received by the array antenna 101 is a millimeter wave telemetry signal, and the millimeter wave array antenna includes m subarrays, each of which is used to preprocess and simulate the received millimeter wave telemetry signal and output one analog synthesized signal; one analog synthesized signal includes s telemetry signals with different carrier frequencies. Please refer to Figure 2 , an example of a subarray in a millimeter wave array antenna is provided, each subarray includes n antenna units 201, n low noise amplifiers (LNA) 202, n adjustable delay lines 203, n first digitally controlled attenuators 204 and 1 n:1 first synthesizer 205, there is a one-to-one correspondence between the antenna units 201, the low noise amplifiers 202, the adjustable delay lines 203 and the first digitally controlled attenuators 204, all antenna units 201 simultaneously receive the millimeter wave telemetry signals (stream 1, stream 2, ..., stream s) radiated by the target, for one antenna unit 201, the millimeter wave telemetry signal it receives is amplified by the corresponding low noise amplifier (LNA) 202, and then by the corresponding adjustable delay line 203 delays the millimeter wave telemetry signal within the working bandwidth supported by the telemetry device to control its phase, and the delay amount is determined by the target acquisition and tracking device. Then the corresponding first digitally controlled attenuator 204 attenuates the telemetry signal after delay to control its amplitude, and the attenuation amount of the attenuation is determined by the target acquisition and tracking device. Finally, the telemetry signals output by the n first digitally controlled attenuators are synthesized by the n:1 first synthesizer 205 to obtain one analog synthesized signal. Thus, the m sub-arrays output a total of m analog synthesized signals; wherein the delay amount of the adjustable delay line 203 and the attenuation value of the first digitally controlled attenuator 204 are both determined by the target acquisition and tracking device. Some working principles of the array antenna 101 are described below.

[0062] According to the beam forming principle of phased array antenna, the beam pointing is recorded as (α0, β0), and the coordinates of a certain antenna unit (0, 0) are taken as the reference point, then the coordinates are ( x i , y j ) The phase shift value of the antenna unit can be expressed as:

[0063] Formula (1);

[0064] Where λ is the wavelength of the received telemetry signal.

[0065] From formula (1), we can see that the phase shift value is not only related to the coordinates of the antenna unit ( x i , y j) and the wavelength λ of the telemetry signal. The signal wavelength λ in the millimeter wave band has a wide range, which means that the phase shift value cannot be represented by a fixed value. Otherwise, dispersion will occur, resulting in beam pointing deviation far away from the center frequency. Therefore, the embodiment of the present invention uses an adjustable delay line to replace the traditional phase shifter, and the coordinates are ( x i , y j ) of the antenna unit delay value It can be expressed as:

[0066] Formula (2);

[0067] Where c is the speed of light.

[0068] The coordinates are ( x i , y j The telemetry signal received by the antenna unit is s i,j ( t ), the beam signal formed is:

[0069] Formula (3);

[0070] Among them, the coordinates are ( x i , y j )’s amplitude control value for the telemetry signal received by the antenna unit.

[0071] From formula (2), we can see that the delay value is only related to the coordinates of the antenna unit ( x i , y j ) but has nothing to do with the wavelength λ of the telemetry signal. Therefore, the beam pointing accuracy can be guaranteed within the entire working bandwidth of the telemetry receiving equipment.

[0072] The hybrid receiving and collecting device 102 is used to perform a first processing on stream 1 in the preprocessed telemetry signal, and output an array digital signal of stream 1, which is recorded as a first signal; and to perform a second processing on streams 2 to s in the preprocessed telemetry signal, and output (s-1) synthetic digital signals, which are recorded as second signals.

[0073] In some embodiments, please refer to Figure 3 The hybrid receiving and collecting device 102 includes m 1:s splitters 301, a first signal receiving and collecting module 302, (s-1) second signal receiving and collecting modules 303 and a frequency synthesizer 304, which will be described in detail below.

[0074] Each 1:s splitter 301 is used to split one analog synthesis signal into s signals, each signal includes s telemetry signals with different carrier frequencies, and the s signals are respectively sent to the first signal receiving and collecting module and (s-1) second signal receiving and collecting modules to process stream 1, stream 2, ..., stream s respectively. Each 1:s splitter 301 corresponds to a subarray in the array antenna 101, for example, splitter 1 is used to receive a signal output by subarray 1, splitter 2 is used to receive a signal output by subarray 2, ..., splitter m is used to receive a signal output by subarray m.

[0075] The first signal receiving and collecting module 302 is used to perform first processing on stream 1 of the s signals output by each splitter 301 to obtain corresponding m sub-array digital signals; the first signal is composed of the m sub-array digital signals corresponding to stream 1; the first processing at least includes: a first down-conversion processing, a first filtering processing and a first analog-to-digital sampling processing.

[0076] The (s-1) second signal receiving and collecting modules 303 correspond one-to-one to stream 2, ..., stream s in the s signals; each second signal receiving and collecting module 303 is used to perform a second processing on the corresponding 1 signal output by each splitter 301 to obtain an array synthetic digital signal; the second signal is composed of (s-1) array synthetic digital signals; the second processing includes at least: phase shift processing, synthesis processing, second down-conversion processing, second filtering processing and second analog-to-digital sampling processing.

[0077] In some embodiments, the telemetry signal can be divided into s signals after passing through the splitter 301, which can be recorded as the 1st signal, the 2nd signal, ..., and the sth signal. In the above case, each splitter 301 outputs the 1st signal to the first signal receiving and collecting module 302 for processing the pre-selected narrowband telemetry signal (i.e., stream 1), and its carrier frequency is f1; and outputs the 2nd signal, ..., and the sth signal to the corresponding (s-1) second signal receiving and collecting modules 303, respectively, for processing the other (s-1) signals (i.e., stream 2, ..., stream s), and their carrier frequencies are f2, ..., fs. Wherein:

[0078] After receiving the first signal, the first signal receiving and collecting module 302 performs parallel first down-conversion (DC), first filtering, first analog-to-digital sampling and other processing on stream 1 (a total of m signals), and outputs m sub-array digital signals corresponding to stream 1, namely, the first signal.

[0079] In some embodiments, please refer to Figure 4The first signal receiving and collecting module 302 includes: m sub-array signal receiving and collecting units, each sub-array signal receiving and collecting unit includes: a first down-conversion circuit 401, a first filtering circuit 402 and a first analog-to-digital sampling circuit 403, the first down-conversion circuit 401, the first filtering circuit 402 and the first analog-to-digital sampling circuit 403, corresponding to the m channels of signals of stream 1 one by one, wherein:

[0080] The first down-conversion circuit 401 is used to perform a first down-conversion process on stream 1 . The frequency of the local oscillator signal of the first down-conversion process is determined according to the carrier frequency of stream 1 .

[0081] The first filtering circuit 402 is used to perform a first filtering process on the signal after the first down-conversion process, and the bandwidth of the first filtering process is determined according to the bandwidth of stream 1.

[0082] The first analog-to-digital sampling circuit 403 is used to perform a first analog-to-digital sampling process on the filtered signal to obtain a sub-array digital signal, and the sampling rate of the first analog-to-digital sampling is determined according to the bandwidth of the stream 1. In one embodiment, the first analog-to-digital sampling circuit 403 may be a narrowband analog-to-digital sampler.

[0083] The (s-1)th second signal receiving and collecting module 303 receives the corresponding second signal, ..., sth signal, and performs the second processing on stream 2, ..., stream s. For example, the (j-1)th second signal receiving and collecting module 303 receives the jth signal, 2≤j≤s, performs analog phase shifting and synthesis processing on stream j (a total of m signals) to obtain 1 analog signal, and then performs the second down-conversion processing, the second filtering processing and the second analog-to-digital sampling processing on the synthesized 1 analog signal, and outputs an array synthesized digital signal corresponding to stream j. In summary, the (s-1) second signal receiving and collecting modules 303 output a total of (s-1) array synthesized digital signals corresponding to stream 2, ..., stream s, which constitute the second signal.

[0084] In some embodiments, please refer to Figure 5The second signal receiving and collecting module 303 includes: m phase shifters 501, m second digital controlled attenuators 502, a second synthesizer 503, a second down-conversion circuit 504, a second filtering circuit 505, and a second analog-to-digital sampling circuit 506. Taking stream j as an example, 2≤j≤s, stream j includes m signals. Stream j (m signals) is phase shifted and gain adjusted by the phase shifter 501 and the second digital controlled attenuator 502, and then synthesized into one signal by the second synthesizer 503. The synthesized one signal is processed by the second down-conversion circuit 504, the second filtering circuit 505, and the second analog-to-digital sampling circuit 506 for the second down-conversion, second filtering, and second analog-to-digital sampling to obtain a 1-channel array synthesized digital signal corresponding to stream j. Among them, the frequency of the local oscillator signal processed by the second down-conversion is determined according to the carrier frequency of stream j, the filtering bandwidth of the second filtering is determined according to the bandwidth of stream j, and the sampling rate of the second analog-to-digital sampling is determined according to the bandwidth of stream j.

[0085] It should be noted that, with respect to the settings of the second filtering circuit 505 and the second analog-to-digital sampling circuit 506, when a narrowband filter and a narrowband analog-to-digital sampler are configured, narrowband signals can be received and collected, and when a wideband filter and a wideband analog-to-digital sampler are configured, wideband signals can be received and collected. In some embodiments, when the bandwidth of the telemetry signal of a certain stream is too large and dispersion will occur when a phase shifter is used, an adjustable delay line is used instead of the phase shifter.

[0086] Compared with the first signal receiving and acquiring module 302 which needs to be configured with m first down-conversion circuits 401, m first filtering circuits 402 and m first analog-to-digital sampling circuits 403, the second signal receiving and acquiring module 303 only needs 1 second down-conversion circuit 504, 1 second filtering circuit 505 and 1 second analog-to-digital sampling circuit 506, which can complete the reception and acquisition of one stream of telemetry signals. On the one hand, it greatly reduces the number of components, reduces the difficulty of equipment integration and construction costs, and on the other hand, it greatly reduces the amount of sampling data, reduces the resource overhead and difficulty of data transmission and data processing.

[0087] The frequency synthesizer 304 is used to generate s local oscillator signals according to the carrier frequency of the telemetry signal, and output the s local oscillator signals to the first signal receiving and collecting module 302 and the second signal receiving and collecting module 303 for corresponding first down-conversion processing and second down-conversion processing; wherein one local oscillator signal corresponds to one carrier frequency of the telemetry signal. For example, the first local oscillator signal is used for down-conversion processing of stream 1, the local oscillator signal 2 is used for down-conversion processing of stream 2, ..., and the local oscillator signal s is used for down-conversion processing of stream s.

[0088] The target acquisition and tracking device 103 is used to receive the first signal, adjust the beam pointing of the array antenna, and form a multi-beam signal and a sum and difference signal based on the first signal to acquire and track the space target.

[0089] The target capture and tracking device 103 is also used to perform at least digital phase shifting and beam forming processing on the first signal according to the acquired spatial target pointing, to obtain and output the sum beam signal of stream 1, which is recorded as the third signal.

[0090] In some embodiments, please refer to Figure 6 The target acquisition and tracking device 103 includes: a beam scanning control unit 601, a multi-beam forming unit 602, a multi-beam detection unit 603, a target acquisition unit 604, a sum and difference beam forming unit 605, an angle error extraction unit 606, a target tracking unit 607 and a beam control unit 608, wherein:

[0091] The beam scanning control unit 601 is used to control the beam pointing of the array antenna 101 to scan in the target airspace, wherein the number of scanning points is q, and the q scanning points can cover the target airspace.

[0092] The multi-beam forming unit 602 is used to determine the delay amount of m×n adjustable delay lines according to the multi-beam pointing corresponding to each scanning point scanning the target airspace, and delay the m×n adjustable delay lines according to the delay amount; it is also used to determine p groups of phase shift values ​​of m sub-array digital signals according to the beam pointing of the array antenna 101 and the carrier frequency of stream 1, and perform digital phase shift and beamforming processing on the m sub-array digital signals according to the phase shift values ​​to generate p-channel signals corresponding to each scanning point; wherein the p-channel signals correspond to the p beams of the array antenna 101.

[0093] The multi-beam detection unit 603 is used to detect the energy of p-channel signals corresponding to each scanning point, obtain p energy detection values ​​corresponding to each scanning point, perform surface fitting on the p energy detection values, take the maximum value of the surface fitting as the detection result of the corresponding scanning point, and extract the corresponding beam direction; detect the signals corresponding to q scanning points, obtain q detection results and corresponding beam directions; for example, record k The maximum value of the detection result (surface fitting) obtained from the scanning points is S k .

[0094] The target capture unit 604 is used to compare the q detection results to obtain the maximum value S k ; When the maximum value is greater than the preset threshold, the beam pointing corresponding to the maximum value is output, and the output beam pointing is used as the target pointing i 0=( i 0A , i 0E ) for space target capture.

[0095] The sum and difference beam forming unit 605 is used for:

[0096] Determine the delay amount of the m×n adjustable delay lines according to the beam pointing output by the target acquisition unit 604, and delay the m×n adjustable delay lines according to the delay amount; determine the digital phase shift value of the m sub-array digital signals according to the beam pointing and the carrier frequency of stream 1; perform digital phase shift and beam forming processing on the m sub-array digital signals to obtain the sum beam signal of stream 1; shift the beam pointing output by the target acquisition unit 604 in the azimuth direction by Δ i A and -Δ i A , determine the digital phase shift values ​​of the m sub-array digital signals according to the offset beam pointing and the carrier frequency of stream 1, perform digital phase shift and beam forming processing on the m sub-array digital signals, obtain the offset beam signals in two azimuth directions, and then perform subtraction processing to obtain the azimuth difference beam signal of stream 1; offset the beam pointing output by the target acquisition unit 604 in the pitch direction by Δ i E , -Δ i E , the digital phase shift values ​​of the m subarray digital signals are determined according to the offset beam pointing and the carrier frequency of the stream 1 signal, and the m subarray digital signals are subjected to digital phase shift and beam forming processing to obtain the offset beam signals in two elevation directions, and then subtract them to obtain the elevation difference beam signal of stream 1; the sum beam signal of stream 1 is the third signal; wherein, Δ i A is the azimuth angle value equal to half of the half-power width of the array antenna and beam in the azimuth direction, Δ i E It is the elevation angle value in the elevation direction that is equal to half of the half-power width of the array antenna and beam.

[0097] For example, see Figure 7 , forming 5 beams with different directions ( i 0. i 1. i 2. i 3. i 4), where i 0 is the sum beam, and the half-power beam width is ( i 1 / 2A , i 1 / 2E ); i 1=( i 1A , i 1E ) deviates from the sum beam in the azimuth direction, i.e.

[0098] Formula (4);

[0099] i 2=( i 2A , i 2E ) deviates from the beam in the azimuth direction, i.e.

[0100] Formula (5);

[0101] i 3=( i 3A , i 3E ) deviates from the beam in the pitch direction, that is,

[0102] Formula (6);

[0103] i 4=( i 4A , i 4E ) deviates from and beam in the pitch direction, i.e.

[0104] Formula (7);

[0105] The beam pointing is i 0. i 1. i 2. i 3. i The synthetic signals of 4 are recorded as x θ0 (t), x θ1 (t), x θ2 (t) , x θ3 (t), x θ4 (t), then the sum beam signal x ∑ (t) = x θ0 (t); azimuth difference beam signal x ΔA (t)=x θ1 (t)- x θ2 (t), elevation difference beam signal x ΔE (t)=x θ3 (t)- x θ4 (t).

[0106] The angle error extraction unit 606 is used to convert the sum beam signal x of stream 1 into ∑ (t) and the azimuth difference beam signal x of stream 1 ΔA (t) performs cross-correlation operation to obtain the azimuth error value; the angular error extraction unit 606 is also used to extract the sum beam signal x of stream 1 ∑(t) and the elevation difference beam signal x of stream 1 ΔE (t) Perform cross-correlation operation to obtain the pitch angle error value.

[0107] The target tracking unit 607 is used to adjust the current beam pointing according to the azimuth error value and the pitch error value, so that the adjusted beam points to the direction of the space target to track the space target, and output the beam pointing as the target pointing.

[0108] The beam control unit 608 is used to determine the phase shift values ​​of the phase shifters in the (s-1) second signal receiving and collecting modules 303 according to the target orientation output by the target tracking unit 607 and the carrier frequencies of stream 2, ..., stream s.

[0109] The above is some description of the target capture and tracking device 103 .

[0110] The telemetry baseband device 104 is used to receive the second signal and the third signal, and demodulate the second signal and the third signal to obtain telemetry data transmitted by the space target.

[0111] In some embodiments, the telemetry baseband device 104 includes a VPX general hardware platform, s signal processing boards and signal processing software. Each signal processing board can be loaded with telemetry signal processing software. The signal modulation system, bit rate, encoding format, frame format and other parameters are set through the software to achieve synchronization and demodulation of telemetry signals with different bit rates and different systems, obtain telemetry data, and record and send the telemetry data outward. Among them, s signal processing boards can complete the synchronization and demodulation of s telemetry signals.

[0112] The above describes in detail the specific implementation of the analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device provided in the embodiment of the present invention. Based on the analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device in the above embodiment, the following embodiments are provided:

[0113] A certain type of high-speed, low-flying target transmits three Ka-band telemetry signals with different carrier frequencies, among which stream 1 is a narrowband telemetry signal with a code rate of 1Mbit / s and a carrier frequency of f1=30GHz; stream 2 is a mid-band telemetry signal with a code rate of 10Mbit / s and a carrier frequency of f2=31GHz; stream 3 is a broadband telemetry signal with a code rate of 1Gbit / s and a carrier frequency of f3=33GHz. The analog-to-digital hybrid millimeter-wave phased array multi-stream telemetry receiving device provided in this embodiment includes: an array antenna 101, a hybrid receiving and collecting device 102, a target capture and tracking device 103, and a telemetry baseband device 104, which has the ability to capture and track high-dynamic space targets and receive and demodulate three streams of Ka-band telemetry signals.

[0114] In this embodiment, a narrowband telemetry signal with a carrier frequency f1 = 30 GHz is selected as stream 1 for target acquisition and tracking.

[0115] The array antenna 101 is divided into 96 sub-arrays, each of which consists of 16 antenna elements. Figure 8 Each antenna unit is connected to a low noise amplifier (LNA), an adjustable delay line, and a first digitally controlled attenuator. The signals received by the 16 antenna units in the subarray are synthesized into one analog signal by a 16:1 first synthesizer. The 96 subarrays output a total of 96 analog synthesized signals.

[0116] The hybrid receiving and collecting device 102 includes 96 1:3 splitters 301, 1 first signal receiving and collecting module 302, 2 second signal receiving and collecting modules 303 and 1 frequency synthesizer 304. The hybrid receiving and collecting device 102 receives 96 sub-array analog synthesis signals of the array antenna 101. Each sub-array signal is divided into 3 paths by the 1:3 splitter 301. The first output of each splitter is sent to the first signal receiving and collecting module 302, the second output is sent to the first second signal receiving and collecting module 303, and the third output is sent to the second second signal receiving and collecting module 303.

[0117] The first signal receiving and collecting module 302 includes 96 sub-array signal receiving and collecting units (a total of 96 first down-conversion circuits 401, 96 first filtering circuits (e.g., narrowband filters), and 96 analog-to-digital sampling circuits (e.g., narrowband analog-to-digital samplers)), performs parallel down-conversion, filtering, analog-to-digital sampling and other processing on the 96 narrowband telemetry signals of stream 1, and outputs 96 narrowband telemetry digital signals (third signals).

[0118] The first second signal receiving and collecting module 303 includes 96 phase shifters 501, 96 second digitally controlled attenuators 502, 1 second synthesizer 503, 1 second down-conversion circuit 504, 1 filter (second filtering circuit 505) and 1 AD sampler (second analog-to-digital sampling circuit 506), etc. After performing analog phase shifting and gain adjustment on the 96 telemetry signals of stream 2, they are synthesized into 1 analog signal, and then the synthesized analog signal is processed by down-conversion, filtering, AD sampling, etc., and 1 array synthesized digital signal of stream 2 is output.

[0119] The second second signal receiving and collecting module 303 includes 96 phase shifters 501, 96 second digitally controlled attenuators 502, 1 second synthesizer 503, 1 second down-conversion circuit 504, 1 broadband filter (second filtering circuit 505) and 1 broadband AD sampler (second analog-to-digital sampling circuit 506), etc. After phase shifting and gain adjustment of the 96 broadband telemetry signals of stream 3, they are synthesized into 1 analog signal, and then the synthesized signal is down-converted, filtered and AD sampled, and 1 array synthesized digital signal of stream 3 is output.

[0120] Compared with the configuration of the first signal receiving and acquiring module 302, the second signal receiving and acquiring module 303 only needs 1 downconverter, 1 filter and 1 AD sampler to complete the reception and acquisition of 1 stream telemetry signal. On the one hand, the number of downconverters, filters and AD samplers is reduced from 96 to 1, reducing the difficulty of equipment integration and construction costs; on the other hand, the amount of sampled data is reduced to 1 / 96, reducing the resource overhead and difficulty of data transmission and data processing.

[0121] The frequency synthesizer 304 generates three local oscillator signals required by the down-converter according to the carrier frequency of the target signal. The local oscillator signal frequency f ci =f i -f IFi (i=1,2,3), used to set the carrier frequency to f i The telemetry signal is down-converted to an intermediate frequency signal with an intermediate frequency of f IFi Among them, the frequency f c1 The local oscillator signal needs to be divided into 96 channels.

[0122] The target acquisition and tracking device 103 includes a beam scanning control unit 601, a multi-beam forming unit 602, a multi-beam detection unit 603, a target acquisition unit 604, a sum and difference beam forming unit 605, an angle error extraction unit 606, a target tracking unit 607 and a beam control unit 608, wherein:

[0123] The beam scanning control unit 601 controls the multi-beam pointing to scan in the target airspace.

[0124] The multi-beam forming unit 602 determines the phase shift value of the stream 1 digital signal of the 96 sub-arrays according to the beam pointing, performs digital phase shift and beam forming processing on the stream 1 digital signal of the 96 sub-arrays, and generates 120 signals corresponding to the 120 beams of the array antenna.

[0125] The multi-beam detection unit 603 detects the energy of the 120 beams using an energy detection algorithm, performs surface fitting on the 120 detection values, and records the maximum value of the fitting surface and the corresponding beam pointing direction.

[0126] The target acquisition unit 604 compares the detection results of all scanning points. If the maximum value of the detection result exceeds the preset threshold, the corresponding beam pointing is output as the target pointing θ0=(θ 0A , θ 0E ) to achieve target capture.

[0127] The sum and difference beam forming unit 605 forms five beams (θ0, θ1, θ2, θ3, θ4) with different directions by changing the phase shift values ​​of the digital signals of the 96 sub-array streams 1. Among them, θ0 is the sum beam, and the half-power beam width is (θ 1 / 2A ,θ 1 / 2E ), θ1 and θ2 deviate from the sum beam in the azimuth direction, and θ3 and θ4 deviate from the sum beam in the elevation direction. The synthetic signals with beam directions of θ0, θ1, θ2, θ3, and θ4 are denoted as x θ0 (t), x θ1 (t), x θ2 (t) , x θ3 (t), x θ4 (t), then the sum beam signal x ∑ (t) = x θ0 (t); azimuth difference beam signal x ΔA (t)=x θ1 (t)- x θ2 (t), elevation difference beam signal x ΔE (t)=x θ3 (t)- x θ4 (t).

[0128] The angle error extraction unit 606 extracts the sum beam signal x ∑ and azimuth difference beam signal x ΔA Perform cross-correlation operation and obtain the azimuth error value after low-pass filtering, and combine it with the beam signal x ∑ and the elevation difference beam signal x ΔE The cross-correlation operation is performed and the pitch angle error value is obtained after low-pass filtering. The extracted azimuth error value and pitch angle error value reflect the angle information of target deviation and beam pointing.

[0129] The target tracking unit 607 controls the change of the beam pointing according to the extracted angular error voltage, current and beam pointing values, so as to point to the target direction, thereby achieving target tracking.

[0130] The beam control unit 608 is used to determine the phase shift values ​​of the phase shifters in the (s-1) second signal receiving and collecting modules 303 according to the target orientation output by the target tracking unit 607 and the carrier frequencies of stream 2, ..., stream s.

[0131] The telemetry baseband device 104 is composed of a VPX general hardware platform, three signal processing boards and signal processing software. The first signal processing board loads the stream 1 telemetry signal processing software and receives the sum beam signal x formed by the target acquisition and tracking device. ∑ (t) Digital signal processing technology is used to synchronize and demodulate the telemetry signal of stream 1, obtain the telemetry data of stream 1, and record and send it out.

[0132] The second signal processing board loads the stream 2 telemetry signal processing software, receives the synthesized digital signal of stream 2 output by the first second signal receiving and acquisition module, uses digital signal processing technology to realize the synchronization and demodulation of the stream 2 telemetry signal, obtains the telemetry data of stream 2, and records and sends it out.

[0133] The third signal processing board loads the stream 3 telemetry signal processing software, receives the synthesized digital signal of stream 3 output by the second signal receiving and acquisition module, uses digital signal processing technology to realize the synchronization and demodulation of the stream 3 telemetry signal, obtains the telemetry data of stream 3, and records and sends it out.

[0134] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A hybrid analog-digital millimeter wave phased array multi-stream telemetry receiving device, characterized in that: include: An array antenna is used to receive telemetry signals radiated by a space target and preprocess the telemetry signals; the telemetry signals include s telemetry signals with different carrier frequencies and non-overlapping spectra; among the s telemetry signals with different carrier frequencies and non-overlapping spectra, a narrowband telemetry signal with one carrier frequency is preselected for target capture and tracking, which is recorded as stream 1; the telemetry signals with the remaining (s-1) carrier frequencies except stream 1 are recorded as stream 2, ..., stream s, respectively; wherein s≥2; The hybrid receiving and collecting device is used to perform a first process on stream 1 in the preprocessed telemetry signal, and output an array digital signal of stream 1, which is recorded as a first signal; perform a second process on streams 2 to s in the preprocessed telemetry signal, respectively, and output (s-1) array synthesized digital signals, which are recorded as second signals; A target acquisition and tracking device, configured to receive the first signal, adjust the beam pointing of the array antenna, and form a multi-beam signal and a sum and difference signal based on the first signal to acquire and track the space target; The target acquisition and tracking device is further used to perform processing including at least digital phase shifting and beam forming on the first signal according to the acquired spatial target pointing, to obtain and output a sum beam signal of stream 1, which is recorded as a third signal; The telemetry baseband device is used to receive the second signal and the third signal, and demodulate the second signal and the third signal to obtain the telemetry data transmitted by the space target.

2. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 1, characterized in that: The array antenna comprises: m sub-arrays, wherein each sub-array is used to pre-process and simulate the received telemetry signal and output one analog synthesized signal; the one analog synthesized signal includes s telemetry signals with different carrier frequencies; wherein the pre-processing includes at least: low-noise amplification processing, delay processing and attenuation processing.

3. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 2, characterized in that: Each of the subarrays comprises: n antenna units, n low noise amplifiers, n adjustable delay lines, n first digitally controlled attenuators and a first synthesizer, wherein the antenna units, low noise amplifiers, adjustable delay lines and first digitally controlled attenuators correspond one to one; The antenna unit is used to receive the telemetry signal radiated by the space target; The low noise amplifier is used to amplify the telemetry signal received by the corresponding antenna unit; The adjustable delay line is used to delay the corresponding telemetry signal after amplification, and the delay amount of the delay processing is determined by the target acquisition and tracking device; The first digitally controlled attenuator is used to perform attenuation processing on the corresponding delayed telemetry signal, and the attenuation amount of the attenuation processing is determined by the target acquisition and tracking device; The first synthesizer is used to synthesize the telemetry signals output by the n first digitally controlled attenuators to obtain an analog synthesized signal.

4. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 3, characterized in that: The hybrid receiving and collecting device comprises: m splitters, each of which is used to split the analog synthetic signal into s signals, and the s signals are respectively sent to the first signal receiving and collecting module and (s-1) second signal receiving and collecting modules to process stream 1, stream 2, ..., stream s respectively; A first signal receiving and collecting module is used to perform first processing on the stream 1 in the s signals output by each splitter to obtain corresponding m sub-array digital signals; the first signal is composed of the m sub-array digital signals corresponding to the stream 1; the first processing at least includes: a first down-conversion processing, a first filtering processing and a first analog-to-digital sampling processing; (s-1) second signal receiving and collecting modules correspond one-to-one to stream 2, ..., stream s in the s signals; each of the second signal receiving and collecting modules is used to perform a second processing on the corresponding 1 signal output by each of the splitters to obtain an array synthetic digital signal; the second signal is composed of (s-1) array synthetic digital signals; the second processing includes at least: phase shift processing, synthesis processing, second down-conversion processing, second filtering processing and second analog-to-digital sampling processing.

5. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 4, characterized in that: The first signal receiving and collecting module comprises: m sub-array signal receiving and collecting units, each sub-array signal receiving and collecting unit comprises: a first down-conversion circuit, a first filtering circuit and a first analog-to-digital sampling circuit; the m sub-array signal receiving and collecting units correspond one-to-one to the m splitters; The first down-conversion circuit is used to perform a first down-conversion process on the stream 1 outputted by the corresponding splitter, and the frequency of the local oscillator signal of the first down-conversion process is determined according to the carrier frequency of the stream 1; The first filtering circuit is used to perform a first filtering process on the signal after the first down-conversion process, and the bandwidth of the first filtering process is determined according to the bandwidth of the stream 1; The first analog-to-digital sampling circuit is used to perform a first analog-to-digital sampling process on the signal after filtering to obtain a sub-array digital signal. The sampling rate of the first analog-to-digital sampling process is determined according to the bandwidth of the stream 1.

6. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 4, characterized in that: The second signal receiving and collecting module comprises: m phase shifters, a synthesizer, a second down-conversion processing circuit, a second filtering processing circuit and a second analog-to-digital sampling processing circuit; the m phase shifters correspond one to one to the m splitters; Each of the phase shifters is used to perform phase shift processing on one signal in the stream 2, ..., stream s output by the corresponding splitter, and the phase shift value of the phase shift processing is determined by the target acquisition and tracking device according to the beam pointing and the carrier frequency of the corresponding telemetry signal; The synthesizer is used to synthesize the signals output by the m phase shifters to obtain one synthesized signal; The second down-conversion processing circuit is used to perform a second down-conversion processing on the 1-way synthesized signal output by the synthesizer, and the frequency of the local oscillator signal processed by the second down-conversion processing is determined according to the carrier frequency of the corresponding 1-way signal in stream 2, ..., stream s; The second filtering processing circuit is used to perform a second filtering process on the signal after the second down-conversion process, and the filtering bandwidth of the second filtering process is determined according to the bandwidth of a corresponding signal in stream 2, ..., stream s; The second analog-to-digital sampling processing circuit is used to perform a second analog-to-digital sampling processing on the filtered signal to obtain a digital signal. The sampling rate of the second analog-to-digital sampling processing is determined according to the bandwidth of the corresponding 1 signal in stream 2, ..., stream s.

7. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 4, characterized in that: The hybrid receiving and collecting device also includes: A frequency synthesizer is used to generate s local oscillator signals according to the carrier frequency of the telemetry signal, and output the s local oscillator signals to the first signal receiving and acquisition module and the second signal receiving and acquisition module for corresponding first down-conversion processing and second down-conversion processing; wherein, one local oscillator signal corresponds to a carrier frequency of the telemetry signal.

8. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 4, characterized in that: The target capture and tracking device comprises: A beam scanning control unit, used to control the beam pointing of the array antenna to scan in the target airspace, wherein the number of scanning points is q, and the q scanning points can cover the target airspace; A multi-beam forming unit, used to determine the delay amount of m×n adjustable delay lines according to the multi-beam pointing corresponding to each scanning point scanning the target airspace, and delay the m×n adjustable delay lines according to the delay amount; and also used to determine p groups of phase shift values ​​of the m sub-array digital signals according to the multi-beam pointing of the array antenna and the carrier frequency of the stream 1, and perform digital phase shift and beam forming processing on the m sub-array digital signals according to the phase shift values ​​to generate p-channel signals corresponding to each scanning point; the p-channel signals correspond to the p beams of the array antenna; A multi-beam detection unit, used to detect the energy of the p-channel signals corresponding to each scanning point, obtain p energy detection values ​​corresponding to each scanning point, perform surface fitting on the p energy detection values, use the maximum value of the surface fitting as the detection result of the corresponding scanning point, and extract the corresponding beam pointing; detect the signals corresponding to q scanning points, obtain q detection results and corresponding beam pointing; A target capture unit is used to compare the q detection results to obtain a maximum value; when the maximum value is greater than a preset threshold, output a beam pointing corresponding to the maximum value, and use the output beam pointing as a target pointing to capture a space target; Sum and difference beamforming unit, where: Determine the delay amount of the m×n adjustable delay lines according to the beam pointing output by the target acquisition unit, and delay the m×n adjustable delay lines according to the delay amount; determine the digital phase shift value of the m sub-array digital signals according to the beam pointing and the carrier frequency of stream 1; obtain the sum beam signal of stream 1 after performing digital phase shift and beamforming processing on the m sub-array digital signals; shift the beam pointing output by the target acquisition unit in the azimuth direction by Δ θ A and -Δ θ A , determining the digital phase shift values ​​of the m subarray digital signals according to the offset beam pointing and the carrier frequency of the stream 1, performing digital phase shift and beam forming processing on the m subarray digital signals, obtaining offset beam signals in two azimuth directions, and then performing subtraction processing to obtain the azimuth difference beam signal of the stream 1; offsetting the beam pointing output by the target acquisition unit by Δ in the pitch direction θ E , -Δ θ E , according to the offset beam pointing and the carrier frequency of the stream 1 signal, the digital phase shift values ​​of the m subarray digital signals are determined, and after digital phase shift and beamforming processing are performed on the m subarray digital signals, offset beam signals in two elevation directions are obtained and then subtracted to obtain the elevation difference beam signal of the stream 1; the sum beam signal of the stream 1 is the third signal; wherein, Δ θ A is the azimuth angle value equal to half of the half-power width of the array antenna and beam in the azimuth direction, Δ θ E is the elevation angle value equal to half of the half-power width of the array antenna and beam in the elevation direction; an angle error extraction unit, configured to perform a cross-correlation operation on the sum beam signal of the stream 1 and the azimuth difference beam signal of the stream 1 to obtain an azimuth angle error value of the stream 1; the angle error extraction unit is further configured to perform a cross-correlation operation on the sum beam signal of the stream 1 and the elevation difference beam signal of the stream 1 to obtain an elevation angle error value of the stream 1; A target tracking unit, configured to adjust the current beam pointing according to the azimuth error value of the stream 1 and the elevation error value of the stream 1, so that the adjusted beam points to the direction of the space target, so as to track the space target, and output the beam pointing as the target pointing; The beam control unit is used to determine the phase shift value of the phase shifter in the (s-1) second signal receiving and collecting modules according to the target orientation output by the target tracking unit and the carrier frequencies of stream 2, ..., stream s.

9. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 1, characterized in that: The array antenna is a millimeter wave array antenna; the telemetry signal radiated by the space target and received by the array antenna is a millimeter wave telemetry signal with at least two different carrier frequencies whose spectra do not overlap with each other.

10. The analog-digital hybrid millimeter wave phased array multi-stream telemetry receiving device according to claim 1, characterized in that: The telemetry baseband device is used to demodulate the second signal and the third signal, including: Acquire preset telemetry signal parameters, and perform synchronization and demodulation processing on the second signal and the third signal according to the preset telemetry signal parameters.

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