Satellite signal receiving control method and device, equipment and storage medium

Abstract

The invention relates to the technical field of satellite positioning, and discloses a satellite signal receiving control method, device and equipment and a storage medium, and the method comprises the steps: receiving a frequency configuration instruction; determining a to-be-switched frequency configuration module according to a to-be-switched frequency in the frequency configuration instruction; according to a target frequency in the frequency configuration instruction, the frequency of a local oscillation frequency signal of the transceiver is adjusted through a digital control oscillator, and the local oscillation frequency signal is controlled to be input into a frequency mixer of the frequency configuration module to be switched; and the frequency switching module is used for switching the frequency configuration module to be switched, so that an input signal of the frequency configuration module to be switched is matched with a target frequency after sequentially passing through the frequency mixer, the analog-to-digital converter and the filtering extraction module of the frequency configuration module to be switched, the frequency configuration operation of the transceiver is completed, and the input signal is mixed with the local oscillation frequency signal in the frequency mixer. By applying the technical scheme of the invention, the working frequency of the transceiver can be adaptively configured, and the detection precision and resolution of satellite signals are improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of satellite positioning technology, and in particular to a satellite signal reception control method, device, equipment and computer-readable storage medium. Background Art

[0002] Satellite positioning technology relies on signals received from satellites. Currently, dual-frequency positioning receivers are usually used, that is, two fixed signal frequency bands are used to receive satellite signals. The choice of positioning receiver frequency band directly determines the frequency range of satellite signals that it can receive. Common examples include the L1 and L2 signal bands in the Global Navigation Satellite System (GNSS), or the L1 and L5 signal bands. Using two satellite frequency bands and constellations at the same time can improve the output quality of the GNSS receiver.

[0003] However, the existing dual-frequency positioning receivers do not cover all satellite frequency bands. When receiving satellite signals of other frequencies in a specific scenario, using the received satellite signals for satellite positioning will result in poor accuracy of the positioning calculation results. Summary of the invention

[0004] In view of the above problems, embodiments of the present invention provide a satellite signal reception control method, apparatus, device and computer-readable storage medium for adaptively configuring the operating frequency of a dual-frequency receiver to improve the detection accuracy and resolution of satellite signals.

[0005] According to one aspect of an embodiment of the present invention, a satellite signal reception control method is provided, which is applied to a transceiver, wherein the transceiver includes a first frequency configuration module, a second frequency configuration module and a digitally controlled oscillator; each of the frequency configuration modules includes: a mixer, an analog-to-digital converter and a filtering and extraction module;

[0006] The method comprises:

[0007] receiving a frequency configuration instruction, wherein the frequency configuration instruction includes a frequency to be switched and a target frequency;

[0008] Determine the frequency configuration module to be switched according to the frequency to be switched in the frequency configuration instruction; wherein the frequency configuration module to be switched is one of the first frequency configuration module and the second frequency configuration module;

[0009] According to the target frequency in the frequency configuration instruction, the frequency of the local oscillator frequency signal of the transceiver is adjusted by a digitally controlled oscillator, and the local oscillator frequency signal is controlled to be input into the mixer of the frequency configuration module to be switched, so that the input signal of the frequency configuration module to be switched matches the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, thereby completing the frequency configuration operation of the transceiver;

[0010] The input signal is mixed with the local oscillator frequency signal in the mixer of the frequency configuration module to be switched.

[0011] Specifically, the present invention configures different local oscillator frequencies and processes the input signal of the transceiver in combination with digital down-conversion technology to switch the operating frequency of the dual-frequency receiver, thereby realizing a dual-frequency satellite positioning receiver that can switch different frequencies, improving the detection accuracy and resolution of the transceiver for satellite signals, enhancing the signal's anti-interference ability, and being more adaptable, thereby better meeting the performance requirements of the transceiver for satellite signal detection and identification.

[0012] In an optional manner, the input signal is one of the signals of the external antenna signal after passing through the power divider;

[0013] The power divider divides the external antenna signal into a plurality of signals with equal or unequal energy;

[0014] The external antenna signal is received by an antenna, and the antenna is connected to the transceiver via the power divider.

[0015] In an optional manner, adjusting the frequency of the local oscillator frequency signal of the transceiver by a digitally controlled oscillator and controlling the local oscillator frequency signal to be input into a mixer of the frequency configuration module to be switched includes:

[0016] Generate an initial local oscillation frequency signal of a preset frequency by a digitally controlled oscillator, and control the initial local oscillation frequency signal to pass through a first frequency divider, a phase-locked loop, and a second frequency divider in sequence to obtain an adjusted local oscillation frequency signal;

[0017] The adjusted local oscillator frequency signal is input into the mixer of the frequency configuration module to be switched.

[0018] In an optional manner, the input signal of the frequency configuration module to be switched is matched with the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, including:

[0019] The input signal of the frequency configuration module to be switched passes through the first amplifier, the mixer, the second amplifier and the low-pass filter in sequence to obtain a frequency-converted signal;

[0020] Inputting the frequency-converted signal into an analog-to-digital converter for analog-to-digital conversion and bandpass sampling to obtain two sets of digital signals;

[0021] The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data.

[0022] In an optional manner, the filtering and decimation module includes two filtering and decimation units, each of which includes an operator unit, a low-pass filter and an decimator connected in sequence;

[0023] The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data, including:

[0024] Input each group of digital signals into each corresponding filtering and extracting unit, so that each group of digital signals passes through the operation subunit, the low-pass filter and the extractor in sequence to obtain each channel of sampling data;

[0025] The operation subunit is used to multiply the input digital signal and the local oscillation frequency signal generated by the digital control oscillator, and output the multiplied signal.

[0026] In an optional manner, after completing the frequency configuration operation of the transceiver, the method further includes:

[0027] An input signal is input into the transceiver to obtain a plurality of sampling data, and the plurality of sampling data are sent to the satellite, so that the satellite's capture and tracking module outputs the satellite tracking calculation result according to the plurality of sampling data, and the satellite's positioning calculation module outputs the satellite positioning calculation result according to the plurality of sampling data.

[0028] In an optional manner, the frequency configuration instruction is sent once every preset time, and the method further includes:

[0029] After completing the frequency configuration operation of the transceiver, comparing the signal-to-noise ratios of the satellite tracking calculation results before and after the frequency configuration, and the root mean square values ​​of the satellite positioning calculation results before and after the frequency configuration;

[0030] If the number of satellites in the tracking satellite calculation result after the frequency configuration is greater, the signal-to-noise ratio of the tracking satellite calculation result after the frequency configuration is greater, and the root mean square value of the satellite positioning calculation result after the frequency configuration is smaller, then retaining the frequency configuration operation of the transceiver;

[0031] Otherwise, the operating frequency of the transceiver is restored to the operating state before the frequency configuration operation.

[0032] Specifically, the present invention switches the working frequency of the dual-frequency receiver at regular intervals and automatically selects the two satellite signal frequencies with the best effect to perform satellite positioning calculations, so as to improve the detection accuracy and resolution of the transceiver for satellite signals. Using the satellite signals received by the method of the present invention for satellite positioning can improve the accuracy of the positioning calculation results.

[0033] According to another aspect of an embodiment of the present invention, a satellite signal reception control device is provided, which is applied to a transceiver, wherein the transceiver includes a first frequency configuration module, a second frequency configuration module and a digitally controlled oscillator; each of the frequency configuration modules includes: a mixer, an analog-to-digital converter and a filtering and extraction module;

[0034] The device comprises: a receiving module, a judging module and a configuring module;

[0035] A receiving module, used for receiving a frequency configuration instruction, wherein the frequency configuration instruction includes a frequency to be switched and a target frequency;

[0036] A judgment module, used for determining a frequency configuration module to be switched according to the frequency to be switched in the frequency configuration instruction; wherein the frequency configuration module to be switched is one of the first frequency configuration module and the second frequency configuration module;

[0037] a configuration module, configured to adjust the local oscillator frequency signal of the transceiver according to the target frequency in the frequency configuration instruction, and control the local oscillator frequency signal to be input into the mixer of the frequency configuration module to be switched through a digitally controlled oscillator, so that the input signal of the frequency configuration module to be switched matches the target frequency after passing through the mixer, analog-to-digital converter and filtering and extraction module of the frequency configuration module to be switched in sequence;

[0038] The input signal is mixed with the local oscillator frequency signal in the mixer of the frequency configuration module to be switched.

[0039] According to another aspect of an embodiment of the present invention, a satellite signal reception control device is provided, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; the memory is used to store at least one executable instruction, wherein the executable instruction enables the processor to perform the operation of the satellite signal reception control method as described in any one of the above items.

[0040] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the storage medium stores at least one executable instruction, wherein the executable instruction enables a satellite signal reception control device / apparatus to perform the operation of any one of the satellite signal reception control methods described above.

[0041] The above description is only an overview of the technical solution of the embodiment of the present invention. In order to more clearly understand the technical means of the embodiment of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0043] Figure 1 A schematic flow chart showing an embodiment of a satellite signal reception control method provided by the present invention;

[0044] Figure 2 A schematic diagram showing the connection relationship between a transceiver and an antenna, a power divider, a capture and tracking module, and a positioning calculation module in an embodiment of a satellite signal reception control method provided by the present invention;

[0045] Figure 3 A schematic structural diagram showing an embodiment of the structure of the transceiver part of the satellite signal reception control method provided by the present invention;

[0046] Figure 4 A schematic structural diagram of an embodiment of a satellite signal receiving control device provided by the present invention is shown;

[0047] Figure 5 A schematic structural diagram of an embodiment of a satellite signal reception control device provided by the present invention is shown. DETAILED DESCRIPTION

[0048] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0049] Embodiment 1, Figure 1 A flow chart of an embodiment of a satellite signal reception control method provided by the present invention is shown, and the method is executed by a transceiver; the transceiver includes a first frequency configuration module, a second frequency configuration module and a digitally controlled oscillator; each of the frequency configuration modules includes: a mixer, an analog-to-digital converter and a filtering and extraction module.

[0050] Specifically, the transceiver is a transceiver with dual-frequency receiving function. Exemplarily, the transceiver can be AD9361. Other chips with equivalent functions can also implement this solution. AD9361 is a high-performance, highly integrated radio frequency (RF) transceiver for 3G and 4G base station applications. The device integrates the RF front end with a flexible mixed-signal baseband part, integrates a frequency synthesizer, and provides a configurable digital interface for the processor. The operating frequency range of the AD9361 receiver is 70MHz to 6.0GHz, the operating frequency range of the transmitter is 47MHz to 6.0GHz, and the supported channel bandwidth range is below 200kHz to 56MHz. AD9361 supports the transmission and reception of two signals, and has two RF receiving ports, each of which is connected to a corresponding frequency configuration module.

[0051] like Figure 1 As shown, the method comprises the following steps:

[0052] Step 110: Receive a frequency configuration instruction, where the frequency configuration instruction includes a frequency to be switched and a target frequency.

[0053] Specifically, the frequency configuration instruction is received before the transceiver is powered on or when the transceiver host is running.

[0054] Step 120: Determine the frequency configuration module to be switched according to the frequency to be switched in the frequency configuration instruction; wherein the frequency configuration module to be switched is one of the first frequency configuration module and the second frequency configuration module.

[0055] In some embodiments of the present invention, the first frequency configuration module and the second frequency configuration module of the transceiver respectively configure different carrier frequencies for satellite positioning. When the transceiver does not receive a frequency configuration instruction after powering on, that is, when there is no specified frequency configuration, the two default carrier frequencies configured by the transceiver are used for satellite positioning. Preferably, when the transceiver does not have a specified frequency configuration, the default configuration is 1575.42 MH and 1207 MH for operation, wherein the first frequency configuration module is configured to operate at a carrier frequency of 1575.42 MH, and the second frequency configuration module is configured to operate at a carrier frequency of 1207 MH.

[0056] In some embodiments of the present invention, the frequency to be switched in the frequency configuration instruction is the carrier frequency of the first frequency configuration module or the second frequency configuration module. Exemplarily, if the frequency to be switched in the frequency configuration instruction is 1575.42 MHZ and the target frequency is 1602 MHZ, the frequency configuration module to be switched is determined to be the first frequency configuration module, and the carrier frequency of the first frequency configuration module is specifically configured to 1602 MHZ.

[0057] In some embodiments of the present invention, the frequency configuration instruction may include two frequencies to be switched and two target frequencies, and there is a corresponding relationship between the frequencies to be switched and the target frequencies. For example, if the first frequency to be switched in the frequency configuration instruction is 1575.42MH, the corresponding first target frequency is 1602MHZ, and the second frequency to be switched is 1207MHZ, and the corresponding second target frequency is 1268MHZ; then it is determined that the first frequency configuration module and the second frequency configuration module are both frequency configuration modules to be switched, and the frequency configuration operation is performed on the frequency configuration modules to be switched in turn, specifically, the carrier frequency of the first frequency configuration module is configured to 1602MHZ, and the carrier frequency of the second frequency configuration module is configured to 1268MHZ in turn.

[0058] Step 130: According to the target frequency in the frequency configuration instruction, the frequency of the local oscillator frequency signal of the transceiver is adjusted by a digitally controlled oscillator, and the local oscillator frequency signal is controlled to be input into the mixer of the frequency configuration module to be switched, so that the input signal of the frequency configuration module to be switched matches the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, thereby completing the frequency configuration operation of the transceiver;

[0059] The input signal is mixed with the local oscillator frequency signal in the mixer of the frequency configuration module to be switched.

[0060] In some embodiments of the present invention, the input signal is one of the signals of the external antenna after passing through the power divider;

[0061] The power divider divides the external antenna signal into a plurality of signals with equal or unequal energy;

[0062] The external antenna signal is received by an antenna, and the antenna is connected to the transceiver via the power divider.

[0063] In some embodiments of the present invention, adjusting the frequency of the local oscillator frequency signal of the transceiver by a digitally controlled oscillator, and controlling the local oscillator frequency signal to be input into the mixer of the frequency configuration module to be switched, comprises:

[0064] Generate an initial local oscillation frequency signal of a preset frequency by a digitally controlled oscillator, and control the initial local oscillation frequency signal to pass through a first frequency divider, a phase-locked loop, and a second frequency divider in sequence to obtain an adjusted local oscillation frequency signal;

[0065] The adjusted local oscillator frequency signal is input into the mixer of the frequency configuration module to be switched.

[0066] In some embodiments of the present invention, the input signal of the frequency configuration module to be switched is matched with the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, including:

[0067] The input signal of the frequency configuration module to be switched passes through the first amplifier, the mixer, the second amplifier and the low-pass filter in sequence to obtain a frequency-converted signal;

[0068] Inputting the frequency-converted signal into an analog-to-digital converter for analog-to-digital conversion and bandpass sampling to obtain two sets of digital signals;

[0069] The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data.

[0070] Preferably, the first amplifier is a low noise amplifier, and the second amplifier is a transimpedance amplifier.

[0071] In some embodiments of the present invention, the filtering and decimation module includes two filtering and decimation units, each of which includes an operator unit, a low-pass filter and a decimator connected in sequence;

[0072] The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data, including:

[0073] Input each group of digital signals into each corresponding filtering and extracting unit, so that each group of digital signals passes through the operation subunit, the low-pass filter and the extractor in sequence to obtain each channel of sampling data;

[0074] The operation subunit is used to multiply the input digital signal and the local oscillation frequency signal generated by the digital control oscillator, and output the multiplied signal.

[0075] In some embodiments of the present invention, after completing the frequency configuration operation of the transceiver, the method further includes:

[0076] An input signal is input into the transceiver to obtain a plurality of sampling data, and the plurality of sampling data are sent to the satellite, so that the satellite's capture and tracking module outputs the satellite tracking calculation result according to the plurality of sampling data, and the satellite's positioning calculation module outputs the satellite positioning calculation result according to the plurality of sampling data.

[0077] In some embodiments of the present invention, Figure 2 As shown, Figure 2The connection relationship between the transceiver and the antenna, power divider, capture tracking module and positioning calculation module is shown. The power divider includes an input port and two output ports. The input port of the power divider is connected to the antenna, and each output port of the power divider is respectively connected to each RF receiving port of the transceiver. The antenna receives an external antenna signal and inputs it into the power divider. The power divider divides the external antenna signal into two input signals of equal or unequal energy, and inputs each input signal into each RF receiving port of the transceiver through each output port of the power divider, so that the transceiver processes each input signal to obtain two sets of sampled data, and inputs the two sets of sampled data into the capture tracking module and the positioning calculation module for calculation.

[0078] Among them, the capture and tracking module includes a capture unit and a tracking unit; the capture unit is used to receive the sampling data sent by the transceiver, capture the Doppler and phase data in the sampling data, and send it to the tracking unit; the tracking unit is used to receive the signal sent by the module, and according to the data sent by the tracking unit, track and demodulate the satellite's ephemeris in real time, calculate the pseudorange, carrier and signal-to-noise ratio information, and send the calculated data to the positioning calculation module. The positioning calculation module is used to receive the data sent by the tracking unit and obtain the positioning result according to the satellite positioning calculation formula.

[0079] like Figure 3 As shown, Figure 3 The structure of a digital controlled oscillator and one of the frequency configuration modules of a transceiver is shown. An input signal enters a corresponding frequency configuration module through a radio frequency receiving port. Each frequency configuration module includes: a low noise amplifier, a mixer, a transimpedance amplifier, a low-pass filter, an analog-to-digital converter (ADC), a filter extraction module, a first frequency divider, a phase-locked loop (PX PLL) and a second frequency divider; the filter extraction module includes two filter extraction units, each of which includes an operator unit, a low-pass filter and an extractor connected in sequence.

[0080] Among them, a low noise amplifier, a mixer, a transimpedance amplifier, a low-pass filter, an analog-to-digital converter (ADC) and a filter extraction module are connected in sequence; the analog-to-digital converter is respectively connected to two operator units of the filter extraction module; the first frequency divider, the phase-locked loop and the second frequency divider are connected in sequence; and the second frequency divider is connected to the mixer.

[0081] The transceiver generates an initial local oscillator frequency signal of a preset frequency through a digitally controlled oscillator, and controls the initial local oscillator frequency signal to be input into the first frequency divider and the operation subunits of the two filter extraction units respectively. The initial local oscillator frequency signal passes through the first frequency divider, the phase-locked loop and the second frequency divider in sequence to obtain an adjusted local oscillator frequency signal; the transceiver inputs the adjusted local oscillator frequency signal into the mixer of the frequency configuration module to be switched.

[0082] The transceiver inputs the input signal into a low noise amplifier and passes through a mixer, a transimpedance amplifier, a low-pass filter and an analog-to-digital converter in sequence to reduce the frequency of the input signal from a high frequency to an intermediate frequency. When passing through the mixer, the mixer multiplies the input signal and the adjusted local oscillator frequency signal to obtain a signal of the first frequency. When passing through the analog-to-digital converter, the analog-to-digital converter converts and decomposes the input signal into two digital signals or analog signals, which are respectively input into the operator unit of each filter extraction unit in the filter extraction module.

[0083] The operation subunit receives two signals from the analog-to-digital converter and the digitally controlled oscillator input respectively, multiplies the two signals, outputs the multiplied signal to the low-pass filter, and outputs the sampled data after passing through the extractor. The two filter extraction units of the filter extraction module output one channel of I sampled data and one channel of Q sampled data respectively. The one channel of I sampled data and one channel of Q sampled data are combined into a group of sampled data as the output of the frequency configuration module, that is, the two frequency configuration modules of the transceiver output a group of sampled data respectively, and each group of sampled data includes one channel of I sampled data and one channel of Q sampled data.

[0084] Specifically, the frequency of the sampled data output by the frequency configuration module is the target frequency corresponding to the frequency configuration instruction. The transceiver performs frequency configuration operations on the carrier frequencies of different frequency configuration modules by controlling the frequency of the local oscillator signal generated by the digital control oscillator, so that the carrier frequencies of different frequency configuration modules in the transceiver can be configured to different target frequencies. Exemplarily, if the first frequency to be switched in the frequency configuration instruction is 1575.42MH, the corresponding first target frequency is 1602MHZ, and the second frequency to be switched is 1207MHZ, and the corresponding second target frequency is 1268MHZ, then the transceiver controls the frequency of the local oscillator signal generated by the digital control oscillator, and performs frequency configuration operations on the carrier frequencies of the first frequency configuration module and the second frequency configuration module in turn, so that the frequency of the sampled data output by the first frequency configuration module is 1602MHZ, that is, matching the first target frequency, and the frequency of the sampled data output by the second frequency configuration module is 1268MHZ, that is, matching the second target frequency.

[0085] In some embodiments of the present invention, the frequency configuration instruction is sent once every preset time, and the method further includes:

[0086] After completing the frequency configuration operation of the transceiver, comparing the satellite tracking calculation results and their corresponding signal-to-noise ratios before and after the frequency configuration, and the root mean square values ​​of the satellite positioning calculation results before and after the frequency configuration;

[0087] If the number of satellites in the tracking satellite calculation result after the frequency configuration is greater, the signal-to-noise ratio of the tracking satellite calculation result after the frequency configuration is greater, and the root mean square value of the satellite positioning calculation result after the frequency configuration is smaller, then retaining the frequency configuration operation of the transceiver;

[0088] Otherwise, the operating frequency of the transceiver is restored to the operating state before the frequency configuration operation.

[0089] Preferably, the transceiver switches the frequency configuration every 10 minutes, and issues a frequency configuration instruction to modify one or more target frequencies in the first frequency configuration module and the second frequency configuration module. The frequency schemes before and after the configuration are compared, and the transceiver determines the frequency schemes with more satellites and a larger average signal-to-noise ratio in the two corresponding frequency trackings and smaller RMS of the satellite positioning results as the two carrier frequencies for the continuous operation of the transceiver according to the number of satellites tracked and the corresponding signal-to-noise ratio before and after the switching configuration, and the root mean square value (RMS) of the satellite positioning results.

[0090] The embodiment of the present invention configures different local oscillator frequencies and processes the input signal of the transceiver in combination with digital down-conversion technology to switch the working frequency of the dual-frequency receiver in a timely manner, and automatically selects the two satellite signal frequencies with the best effect to calculate satellite positioning, thereby improving the detection accuracy and resolution of the transceiver for satellite signals, enhancing the anti-interference ability of the signal, and being more adaptable, thereby better meeting the performance requirements of the transceiver for satellite signal detection and identification. Using the satellite signal received by the method of the present invention for satellite positioning can improve the accuracy of the positioning calculation results.

[0091] Embodiment 2 is another embodiment of the satellite signal reception control method provided by the present invention. The method is executed by a transceiver module. The transceiver module includes at least two transceivers. Each transceiver performs the operation of the satellite signal reception control method provided in Embodiment 1. This process is the same as the satellite signal reception control method of the above-mentioned embodiment, and will not be elaborated here.

[0092] Each transceiver is connected to a power divider, and each power divider is connected to its own antenna. Each transceiver is configured with a different carrier frequency scheme, and uses different carrier frequency schemes to process the input signal to obtain several groups of sampled data. Each transceiver inputs its own output sampled data into the capture and tracking module and the positioning calculation module for calculation.

[0093] The satellite signal reception control method provided by the present invention can adapt and select the frequency that adapts to the current environment in many satellite frequency bands, including but not limited to: L1, L2, L5, L6, B1, B2, B3, E1 and E6 satellite frequency bands, and select any two satellite frequency bands as the carrier frequency scheme of one of the transceivers, and the carrier frequency scheme of each transceiver is different.

[0094] Among them, the capture and tracking module includes a capture unit and a tracking unit; the capture unit is used to receive the sampling data sent by the transceiver, capture the Doppler and phase data in the sampling data, and send it to the tracking unit; the tracking unit is used to receive the signal sent by the module, and according to the data sent by the tracking unit, track and demodulate the satellite's ephemeris in real time, calculate the pseudorange, carrier and signal-to-noise ratio information, and send the calculated data to the positioning calculation module. The positioning calculation module is used to receive the data sent by the tracking unit and obtain the positioning result according to the satellite positioning calculation formula.

[0095] For example, if multiple frequencies need to be received, the number of AD9361 chips can be increased. For example, if four frequencies of signal transmission and reception are required, such as 1575.42MHZ, 1602MHZ, 1268MHZ and 1270MHZ, two AD9361 chips can be used to process the signals, and each AD9361 chip is configured with two carrier frequencies.

[0096] The embodiment of the present invention integrates multiple dual-frequency receivers and configures different local oscillator frequencies, and processes the input signal of the transceiver in combination with digital down-conversion technology to switch the working frequency of each dual-frequency receiver in a timely manner, and automatically selects the best satellite signal frequency scheme for each dual-frequency receiver to calculate satellite positioning, further covering more satellite frequency bands, improving the detection accuracy and resolution of the transceiver module for satellite signals, enhancing the anti-interference ability of the signal, and being more adaptable, thereby better meeting the performance requirements of the transceiver module for satellite signal detection and identification. Using the satellite signal received by the method of the present invention for satellite positioning can improve the accuracy of the positioning calculation results.

[0097] Embodiment 3, Figure 4 FIG. 1 is a schematic diagram showing a structure of an embodiment of a satellite signal receiving control device provided by the present invention; Figure 4 As shown, the device 400 is applied to a transceiver, and the transceiver includes a first frequency configuration module, a second frequency configuration module and a digitally controlled oscillator; each of the frequency configuration modules includes: a mixer, an analog-to-digital converter and a filtering and extraction module;

[0098] The device 400 includes: a receiving module 401, a judging module 402 and a configuring module 403;

[0099] The receiving module 401 is used to receive a frequency configuration instruction, where the frequency configuration instruction includes a frequency to be switched and a target frequency;

[0100] The judgment module 402 is used to determine the frequency configuration module to be switched according to the frequency to be switched in the frequency configuration instruction; wherein the frequency configuration module to be switched is one of the first frequency configuration module and the second frequency configuration module;

[0101] The configuration module 403 is used to adjust the local oscillator frequency signal of the transceiver according to the target frequency in the frequency configuration instruction, and control the local oscillator frequency signal to be input into the mixer of the frequency configuration module to be switched through the digital control oscillator, so that the input signal of the frequency configuration module to be switched matches the target frequency after passing through the mixer, analog-to-digital converter and filter extraction module of the frequency configuration module to be switched in sequence;

[0102] The input signal is mixed with the local oscillator frequency signal in the mixer of the frequency configuration module to be switched.

[0103] In an optional manner, the input signal in the configuration module 403 is one of the signals of the external antenna signal after passing through the power divider;

[0104] The power divider divides the external antenna signal into a plurality of signals with equal or unequal energy;

[0105] The external antenna signal is received by an antenna, and the antenna is connected to the transceiver via the power divider.

[0106] In an optional manner, the step of adjusting the frequency of the local oscillator frequency signal of the transceiver by a digitally controlled oscillator in the configuration module 403, and controlling the local oscillator frequency signal to be input into the mixer of the frequency configuration module to be switched, includes:

[0107] Generate an initial local oscillation frequency signal of a preset frequency by a digitally controlled oscillator, and control the initial local oscillation frequency signal to pass through a first frequency divider, a phase-locked loop, and a second frequency divider in sequence to obtain an adjusted local oscillation frequency signal;

[0108] The adjusted local oscillator frequency signal is input into the mixer of the frequency configuration module to be switched.

[0109] In an optional manner, the input signal of the frequency configuration module to be switched in the configuration module 403 is matched with the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, including:

[0110] The input signal of the frequency configuration module to be switched passes through the first amplifier, the mixer, the second amplifier and the low-pass filter in sequence to obtain a frequency-converted signal;

[0111] Inputting the frequency-converted signal into an analog-to-digital converter for analog-to-digital conversion and bandpass sampling to obtain two sets of digital signals;

[0112] The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data.

[0113] In an optional manner, the filtering and decimation module in the configuration module 403 includes two filtering and decimation units, each of which includes an operator unit, a low-pass filter and a decimator connected in sequence;

[0114] The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data, including:

[0115] Input each group of digital signals into each corresponding filtering and extracting unit, so that each group of digital signals passes through the operation subunit, the low-pass filter and the extractor in sequence to obtain each channel of sampling data;

[0116] The operation subunit is used to multiply the input digital signal and the local oscillation frequency signal generated by the digital control oscillator, and output the multiplied signal.

[0117] In an optional manner, the device 400 further includes: a positioning calculation module and a configuration confirmation module;

[0118] The positioning calculation module is used to input the input signal into the transceiver to obtain a plurality of sampling data, and send the plurality of sampling data to the satellite, so that the satellite's capture and tracking module outputs the tracking satellite calculation result according to the plurality of sampling data, and the satellite's positioning calculation module outputs the satellite positioning calculation result according to the plurality of sampling data.

[0119] A configuration confirmation module, used for comparing the signal-to-noise ratio of the tracking satellite calculation results before and after the frequency configuration, and the root mean square value of the satellite positioning calculation results before and after the frequency configuration after completing the frequency configuration operation of the transceiver;

[0120] If the number of satellites in the tracking satellite calculation result after the frequency configuration is greater, the signal-to-noise ratio of the tracking satellite calculation result after the frequency configuration is greater, and the root mean square value of the satellite positioning calculation result after the frequency configuration is smaller, then retaining the frequency configuration operation of the transceiver;

[0121] Otherwise, the operating frequency of the transceiver is restored to the operating state before the frequency configuration operation.

[0122] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0123] Embodiment 4, Figure 5 The schematic diagram of the structure of an embodiment of the satellite signal reception control device provided by the present invention is shown. The specific embodiment of the present invention does not limit the specific implementation of the satellite signal reception control device.

[0124] like Figure 5 As shown, the satellite signal reception control device may include: a processor (processor) 502, a communication interface (Communications Interface) 504, a memory (memory) 506, and a communication bus 508.

[0125] The processor 502, the communication interface 504, and the memory 506 communicate with each other via the communication bus 508. The communication interface 504 is used to communicate with other devices such as a client or other server network elements. The processor 502 is used to execute the program 510, which can specifically execute the relevant steps in the above-mentioned embodiment of the satellite signal reception control method.

[0126] Specifically, the program 510 may include program code including computer executable instructions.

[0127] The processor 502 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiment of the present invention. The one or more processors included in the satellite signal reception control device may be processors of the same type, such as one or more CPUs; or may be processors of different types, such as one or more CPUs and one or more ASICs.

[0128] The memory 506 is used to store the program 510. The memory 506 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0129] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system or other device. In addition, the embodiments of the present invention are not directed to any particular programming language.

[0130] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. Similarly, in order to simplify the present invention and help understand one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Wherein, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself is a separate embodiment of the present invention.

[0131] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and further may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive.

[0132] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A satellite signal reception control method, characterized in that: Applied to a transceiver, the transceiver comprises a first frequency configuration module, a second frequency configuration module and a digitally controlled oscillator; Each of the frequency configuration modules includes: a mixer, an analog-to-digital converter and a filtering and extraction module; The method comprises: receiving a frequency configuration instruction, wherein the frequency configuration instruction includes a frequency to be switched and a target frequency; Determine the frequency configuration module to be switched according to the frequency to be switched in the frequency configuration instruction; wherein the frequency configuration module to be switched is one of the first frequency configuration module and the second frequency configuration module; According to the target frequency in the frequency configuration instruction, the frequency of the local oscillator frequency signal of the transceiver is adjusted by a digitally controlled oscillator, and the local oscillator frequency signal is controlled to be input into the mixer of the frequency configuration module to be switched, so that the input signal of the frequency configuration module to be switched matches the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, thereby completing the frequency configuration operation of the transceiver; The input signal is mixed with the local oscillator frequency signal in the mixer of the frequency configuration module to be switched.

2. The satellite signal reception control method according to claim 1, characterized in that: The input signal is one of the signals of the external antenna after passing through the power divider; The power divider divides the external antenna signal into a plurality of signals with equal or unequal energy; The external antenna signal is received by an antenna, and the antenna is connected to the transceiver via the power divider.

3. The satellite signal reception control method according to claim 1, characterized in that: The method comprises: adjusting the frequency of the local oscillator frequency signal of the transceiver by a digitally controlled oscillator, and controlling the local oscillator frequency signal to be input into the mixer of the frequency configuration module to be switched, comprising: Generate an initial local oscillation frequency signal of a preset frequency by a digitally controlled oscillator, and control the initial local oscillation frequency signal to pass through a first frequency divider, a phase-locked loop, and a second frequency divider in sequence to obtain an adjusted local oscillation frequency signal; The adjusted local oscillator frequency signal is input into the mixer of the frequency configuration module to be switched.

4. The satellite signal reception control method according to claim 1, characterized in that: The input signal of the frequency configuration module to be switched is matched with the target frequency after passing through the mixer, analog-to-digital converter and filtering extraction module of the frequency configuration module to be switched in sequence, including: The input signal of the frequency configuration module to be switched passes through the first amplifier, the mixer, the second amplifier and the low-pass filter in sequence to obtain a frequency-converted signal; Inputting the frequency-converted signal into an analog-to-digital converter for analog-to-digital conversion and bandpass sampling to obtain two sets of digital signals; The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data.

5. The satellite signal reception control method according to claim 4, characterized in that: The filtering and extraction module includes two filtering and extraction units, each of which includes an operator unit, a low-pass filter and an extractor connected in sequence; The two groups of digital signals are input into the filtering and extraction module, and each group of digital signals is filtered and extracted respectively to obtain two channels of sampling data, including: Input each group of digital signals into each corresponding filtering and extracting unit, so that each group of digital signals passes through the operation subunit, the low-pass filter and the extractor in sequence to obtain each channel of sampling data; The operation subunit is used to multiply the input digital signal and the local oscillation frequency signal generated by the digital control oscillator, and output the multiplied signal.

6. The satellite signal reception control method according to any one of claims 1 to 5, characterized in that: After completing the frequency configuration operation of the transceiver, the method further includes: An input signal is input into the transceiver to obtain a plurality of sampling data, and the plurality of sampling data are sent to the satellite, so that the satellite's capture and tracking module outputs the satellite tracking calculation result according to the plurality of sampling data, and the satellite's positioning calculation module outputs the satellite positioning calculation result according to the plurality of sampling data.

7. The satellite signal reception control method according to claim 6, characterized in that: The frequency configuration instruction is sent once every preset time, and the method further includes: After completing the frequency configuration operation of the transceiver, comparing the signal-to-noise ratios of the satellite tracking calculation results before and after the frequency configuration, and the root mean square values ​​of the satellite positioning calculation results before and after the frequency configuration; If the number of satellites in the tracking satellite calculation result after the frequency configuration is greater, the signal-to-noise ratio of the tracking satellite calculation result after the frequency configuration is greater, and the root mean square value of the satellite positioning calculation result after the frequency configuration is smaller, then retaining the frequency configuration operation of the transceiver; Otherwise, the operating frequency of the transceiver is restored to the operating state before the frequency configuration operation.

8. A satellite signal receiving control device, characterized in that: Applied to a transceiver, the transceiver comprises a first frequency configuration module, a second frequency configuration module and a digitally controlled oscillator; Each of the frequency configuration modules includes: a mixer, an analog-to-digital converter and a filtering and extraction module; The device comprises: a receiving module, a judging module and a configuring module; A receiving module, used for receiving a frequency configuration instruction, wherein the frequency configuration instruction includes a frequency to be switched and a target frequency; A judgment module, used for determining a frequency configuration module to be switched according to the frequency to be switched in the frequency configuration instruction; wherein the frequency configuration module to be switched is one of the first frequency configuration module and the second frequency configuration module; a configuration module, configured to adjust the local oscillator frequency signal of the transceiver according to the target frequency in the frequency configuration instruction, and control the local oscillator frequency signal to be input into the mixer of the frequency configuration module to be switched through a digitally controlled oscillator, so that the input signal of the frequency configuration module to be switched matches the target frequency after passing through the mixer, analog-to-digital converter and filtering and extraction module of the frequency configuration module to be switched in sequence; The input signal is mixed with the local oscillator frequency signal in the mixer of the frequency configuration module to be switched.

9. A satellite signal receiving control device, characterized in that: include: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform the operation of the satellite signal reception control method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one executable instruction. When the executable instruction is executed on the satellite signal reception control device / apparatus, the satellite signal reception control device / apparatus performs the operation of the satellite signal reception control method as described in any one of claims 1 to 7.

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