CN-122026095-A - Phased array antenna temperature compensation method, device, medium and phased array antenna system

CN122026095ACN 122026095 ACN122026095 ACN 122026095ACN-122026095-A

Abstract

The application is applicable to the technical field of phased array antennas, and provides a temperature compensation method, a device, a medium and a phased array antenna system for a phased array antenna, wherein the method comprises the steps of obtaining temperature information of a chip unit to be compensated in the phased array antenna; the method comprises the steps of obtaining level information of chip units to be compensated, obtaining a temperature vector of a phased array antenna based on the temperature information and the level information, obtaining a function relation corresponding to amplitude phase change of each chip unit, and obtaining amplitude phase compensation values of each chip unit based on the function relation and the temperature vector. The application has the advantages that the connection level of the chips is fully considered, the temperature vector is used for replacing a single temperature value, the temperature compensation is more accurate, the whole cost of the phased array antenna is not required to be obviously increased, the amplitude adjustment is dispersed to the multi-stage chips, the absolute value of the amplitude adjustment quantity of each stage of chips is reduced, and enough adjustment space is reserved for changing the amplitude or the power of an antenna unit for beam forming.

Inventors

WANG XINZHENG
PAN LIANG
WEN JIAHAO
SHI TAO
FU PING
ZHANG CE

Assignees

上海铂砼科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260311

Claims (10)

1. A method of temperature compensation for a phased array antenna, the method comprising: acquiring temperature information of a chip unit to be compensated in the phased array antenna; Based on the temperature information and the level information, obtaining a temperature vector of the phased array antenna; And acquiring a functional relation corresponding to the amplitude-phase change of each chip unit and acquiring an amplitude-phase compensation value of each chip unit based on the functional relation and the temperature vector.
2. The method for compensating the temperature of a phased array antenna according to claim 1, wherein the method for obtaining the functional relationship between the temperature vector and the amplitude phase change of each chip unit is as follows: Obtaining the level number of the chip based on the level information of the chip unit in the phased array antenna signal path; applying a test temperature to the chip unit to divide the number of layers into The temperature of the chip is set as Obtaining a temperature combination , wherein, Is the maximum number of levels of the chip; changing the test temperature of the chip units of each layer of series to obtain a plurality of temperature combinations; Under each temperature combination, the phased array antenna is used as a transmitting end to work, the amplitude change and the phase change of the output signals of each channel relative to the reference temperature combination are obtained, and the phase change is the following Multiple channels for obtaining relative amplitude And relative phase , wherein, For the channel index to be used, N is the number of antenna units; based on the relative amplitude and the relative phase, a functional relationship of the amplitude variation with respect to the temperature vector and a functional relationship of the phase variation with respect to the temperature vector are obtained: ; ; wherein N is a channel index, N is more than or equal to 1 and less than or equal to N, N is the number of chip units, And Respectively represent the first An amplitude temperature drift function and a phase temperature drift function of each channel, Temperature vector for chip temperature at each stage 。
3. The method of claim 2, wherein the step of changing the test temperature of the chip units of each layer number to obtain a plurality of temperature combinations comprises: acquiring a plurality of groups of temperature combination data generated by a system, and judging each temperature combination one by one as follows: if the temperature of any two stages of chips meets the following conditions: determining the temperature combination as an invalid combination and eliminating the combination; Wherein, the For a preset temperature difference threshold value, And The test temperature of any two-stage chip in a certain temperature combination.
4. The method for compensating the temperature of the phased array antenna according to claim 1, wherein the method for obtaining the temperature information of the chip unit to be compensated in the phased array antenna comprises the following steps: acquiring element attribute information of a chip unit, and judging whether a temperature sensor is integrated in the chip unit or not: if the chip unit is integrated with the temperature sensor, directly acquiring the initial temperature of the chip unit before working and the real-time temperature reported after working; if the chip unit does not integrate the temperature sensor, acquiring initial temperatures before working and real-time temperatures reported after working of a plurality of temperature sensors arranged on the array surface of the phased array antenna.
5. The method of claim 4, wherein for a chip unit without an integrated temperature sensor, the method of obtaining the chip unit temperature is: For any one index is Is closest to the chip unit Temperature data reported by the temperature sensors are recorded as , ; Initial temperature of chip And real-time temperature and All calculated based on the following formula: Wherein, the The weighting factor is used to determine the weight of the sample, To the power of the calculated temperature of the chip unit In order to debug the coefficients of the coefficients, Is the distance between the geometric center of gravity of the temperature sensor and the geometric center of gravity of the chip unit.
6. The method for compensating the temperature of the phased array antenna according to claim 2, wherein the method for obtaining the amplitude-phase compensation value of each chip unit based on the functional relation and the temperature vector is as follows: Acquiring a channel number n of a chip unit, acquiring an initial temperature of the chip unit and a real-time temperature at the current moment, and respectively constructing an initial temperature vector and a real-time temperature vector; Set the index of each level chip connected with channel n as The initial temperature vector And real-time temperature vector The method comprises the following steps of: ; ; Wherein, the Represent the first The initial temperature of the individual chips is set, Represent the first Real-time temperature of each chip at the current moment; based on amplitude temperature drift function And a phase temperature drift function Obtaining the amplitude adjustment value of the chip unit number channel n generated by temperature change And a phase adjustment value : ; 。
7. A method of temperature compensation for a phased array antenna as claimed in claim 1, the method further comprising: the temperature vector and the corresponding function relation of the amplitude phase change of each chip unit are stored in a data storage unit of the phased array antenna.
8. A phased array antenna temperature compensation apparatus, the apparatus comprising: The base data acquisition unit is used for acquiring temperature information of the chip unit to be compensated in the phased array antenna; The temperature vector acquisition unit is used for acquiring a temperature vector of the phased array antenna based on the temperature information and the level information; and the amplitude-phase compensation unit is used for acquiring the functional relation corresponding to the amplitude-phase change of each chip unit and obtaining the amplitude-phase compensation value of each chip unit based on the functional relation and the temperature vector.
9. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, causes the processor to perform the steps of the phased array antenna temperature compensation method of any one of claims 1 to 7.
10. A phased array antenna system comprising a plurality of chip units, a memory and a processor, the memory having stored therein a computer program which, when executed by the processor, causes the processor to perform the steps of the phased array antenna temperature compensation method of any of claims 1 to 7 to temperature compensate the chip units.

Description

Phased array antenna temperature compensation method, device, medium and phased array antenna system Technical Field The invention belongs to the technical field of phased array antennas, and particularly relates to a temperature compensation method and device for a phased array antenna, a medium and a phased array antenna system. Background Phased array antennas are widely used in the fields of satellite communications, mobile communications, radar, aerospace, remote sensing, medical imaging, and the like. Before a phased array antenna works normally, the amplitude and the phase of each channel are usually required to be calibrated, so that the pattern formed by the antenna array meets the expected index. However, after calibration is completed, if the temperature of the antenna operating environment changes, the electrical characteristics and physical dimensions of the electronic devices and connection structures associated with each channel will change, thereby causing drift in the amplitude and phase of the channels, resulting in degradation of the array pattern performance. As phased array antennas are developed toward large-scale arrays, miniaturization, and high integration, the internal signal processing link structure thereof is increasingly complex, and the influence of temperature variation on the antenna performance is increasingly significant. The existing phased array antenna temperature compensation technology mainly comprises the following categories. The first type of temperature compensation method is to introduce a bias or load positively related to temperature variation into a radio frequency channel to counteract attenuation of gain of devices such as an amplifier and the like caused by temperature variation. However, this type of method has limited compensation capability, and especially under high frequency operating conditions, the effect of temperature variation on the gain and phase of the device is more significant, and accurate compensation is difficult to achieve only by means of bias or load adjustment. The second type of temperature compensation method is to arrange a plurality of temperature sensors in an antenna system for monitoring the working temperature of the antenna in real time, and control a phase shifter or a variable gain device through a digital signal processing algorithm by combining the corresponding relation between the temperature obtained by pre-calibration and the phase shift or amplitude error to realize channel compensation. Since the number of actually arranged temperature sensors is usually much smaller than the number of antenna elements, it is necessary to estimate the temperature distribution of the entire array plane by interpolation, and thus an error is inevitably introduced. In addition, in recent years, there have been studies on attempts to implement temperature compensation by training a large amount of temperature and antenna performance data by using a machine learning or artificial intelligence method, and establishing a nonlinear mapping relationship between temperature and channel amplitude and phase. But such methods typically require a large amount of training data and higher computational resources, and are less applicable in practical end products that are cost sensitive or computationally constrained. Therefore, how to accurately represent the temperature conditions corresponding to each channel without significantly increasing the complexity and cost of the system and realize effective compensation of the amplitude and phase drift of each channel becomes an unsolved technical problem in the prior art. Disclosure of Invention The embodiment of the application aims to provide a temperature compensation method for a phased array antenna, which aims to solve the problems of accurately representing the temperature conditions corresponding to each channel and realizing effective compensation for amplitude and phase drift of each channel on the premise of not remarkably increasing the complexity and cost of the system. The embodiment of the application is realized in such a way that a phased array antenna temperature compensation method is provided, and the method comprises the following steps: acquiring temperature information of a chip unit to be compensated in the phased array antenna; Based on the temperature information and the level information, obtaining a temperature vector of the phased array antenna; And acquiring a functional relation corresponding to the amplitude-phase change of each chip unit and acquiring an amplitude-phase compensation value of each chip unit based on the functional relation and the temperature vector. It is another object of an embodiment of the present application to provide a phased array antenna temperature compensation apparatus, the apparatus comprising: The base data acquisition unit is used for acquiring temperature information of the chip unit to be compensated in the phased array antenna; The temp