CN108449153A - A kind of broadcast channel search method and device - Google Patents
A kind of broadcast channel search method and device Download PDFInfo
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- CN108449153A CN108449153A CN201810228105.0A CN201810228105A CN108449153A CN 108449153 A CN108449153 A CN 108449153A CN 201810228105 A CN201810228105 A CN 201810228105A CN 108449153 A CN108449153 A CN 108449153A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
- H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
- H04H60/43—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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Abstract
This application provides a kind of broadcast channel search methods and device, this method to include：Obtain the received signal strength and signal carrier frequency deviation of frequency point to be determined；The relative signal intensity that frequency point to be determined is calculated according to the received signal strength of the received signal strength of neighbouring frequency point and frequency point to be determined, the absolute carrier frequency deviation of frequency point to be determined is determined according to signal carrier frequency deviation；By relative signal intensity and preset relative signal intensity threshold value comparison, the first comparison result is obtained, by absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison, obtains the second comparison result；Judge whether frequency point to be determined is broadcasting station frequency point with the second comparison result according to the first comparison result.This method utilizes relative signal intensity constant principle of optimal threshold when different antennae configures, realize the purpose for being suitable for the configuration of arbitrary different antennae using a set of optimal threshold, in addition, further carrying out auxiliary judgement using carrier wave frequency deviation, can preferably solve the problems, such as to be difficult to accurately to judge station location.
Description
Technical field
This application involves broadcasting communication technology field more particularly to a kind of broadcast channel search methods and device.
Background technology
With the development of integrated circuit technique and Digital Signal Processing, the cost of broadcast receiving chip constantly reduces,
Broadcast receiving function is integrated into various electronic products extensively at present, such as mobile phone, Bluetooth audio device, music player etc..
Broadcast listening is to receive aerial radiofrequency signal to be demodulated, and needs not rely on cellular carrier network or home broadband network,
Therefore for a user broadcast audience have the advantages that it is convenient, economical.
Different broadcasting stations is by the way that in different carrier frequency transmittings, broadcasting receiver usually requires to realize program search
User is set to be quickly found out broadcasting station present in broadcast band.A kind of common tuning implementation method is to compare reception frequency
Signal strength (RSSI) parameter of point and pre-set threshold size think that the frequency point has broadcast electricity if RSSI is more than threshold value
Platform thinks the frequency point without broadcasting station if RSSI is less than threshold value.
However, finding that this method has the following problems by actual test：On the one hand, when broadcast receiving chip antenna length
Or antenna type, when changing, best RSSI threshold values are different, i.e., need different threshold values is arranged for different antenna configurations no
Faulting of slab ends or leakage platform will then be generated.On the other hand, the RSSI value size of frequency point is closed on where broadcasting station relatively, when by various
The influence of disturbing factor is difficult to accurately judge station location by the decision method of above-mentioned RSSI.
Invention content
In view of this, this application provides a kind of broadcast channel search method and device, to solve to be difficult to adapt in the prior art
Reception antenna configuration variation causes tuning to easy to produce faulting of slab ends or leakage platform, and is difficult to accurate the problem of judging station location.
To achieve the above object, this application provides following technical schemes：
A kind of broadcast channel search method, this method include：
Obtain the received signal strength and signal carrier frequency deviation of frequency point to be determined；
It waits sentencing according to described in the received signal strength calculating of the received signal strength of neighbouring frequency point and the frequency point to be determined
Determine the relative signal intensity of frequency point, and, the absolute carrier frequency of the frequency point to be determined is determined according to the signal carrier frequency deviation
Partially；
By the relative signal intensity and preset relative signal intensity threshold value comparison, the first comparison result is obtained, and,
By the absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison, the second comparison result is obtained；
Judge whether the frequency point to be determined is broadcast electricity according to first comparison result and second comparison result
Platform frequency point.
Preferably, further include：When it is broadcasting station frequency point to determine the frequency point to be determined, by the broadcasting station frequency point
It is stored in broadcasting station list.
Preferably, the neighbouring frequency point includes：It is not less than one times of channel width with two lateral extents of the frequency point to be determined
Frequency point；
Described in received signal strength calculating of the basis adjacent to the received signal strength and the frequency point to be determined of frequency point
The relative signal intensity of frequency point to be determined includes：
Obtain the received signal strength of the neighbouring frequency point；
The received signal strength that the received signal strength of the frequency point to be determined is subtracted to the neighbouring frequency point obtains described
The relative signal intensity of frequency point to be determined.
Preferably, described to determine that the absolute carrier frequency deviation of the frequency point to be determined includes according to the signal carrier frequency deviation：
The signal carrier frequency deviation is taken absolute value, the absolute carrier frequency deviation is obtained.
Preferably, described to judge that the frequency point to be determined is according to first comparison result and second comparison result
It is no to include for broadcasting station frequency point：
When the relative signal intensity be more than the relative signal intensity threshold value, and, the absolute carrier frequency deviation be less than institute
When stating absolute carrier frequency deviation threshold value, then judge that the frequency point to be determined is broadcasting station frequency point, otherwise, it is determined that the frequency to be determined
Point is not broadcasting station frequency point.
Preferably, in the absolute carrier frequency for the relative signal intensity and the frequency point to be determined for calculating the frequency point to be determined
Before partially, further include：
Whether the quantity for detecting the received signal strength and the signal carrier frequency deviation that obtain calculates the phase enough
To signal strength and the absolute carrier frequency deviation, re-searched for if it is not, then switching frequency point to be determined.
A kind of broadcast tuning device, the device include：Signal strength acquisition module, carrier wave frequency deviation acquisition module, opposite letter
Number Strength co-mputation module, absolute carrier frequency offset calculation module, relative signal intensity comparison module, carrier wave frequency deviation comparison module and sentence
Cover half block, wherein
The signal strength acquisition module, the received signal strength for obtaining frequency point to be determined；
The carrier wave frequency deviation acquisition module, the signal carrier frequency deviation for obtaining the frequency point to be determined；
The relative signal intensity computing module, the received signal strength for the neighbouring frequency point of basis and the frequency to be determined
The received signal strength of point calculates the relative signal intensity of the frequency point to be determined；
The absolute carrier frequency offset calculation module, for determining the frequency point to be determined according to the signal carrier frequency deviation
Absolute carrier frequency deviation；
The relative signal intensity comparison module is used for the relative signal intensity and preset relative signal intensity threshold
Value compares, and obtains the first comparison result；
The carrier wave frequency deviation comparison module is used for the absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value ratio
Compared with obtaining the second comparison result；
The determination module, for described to be determined according to first comparison result and second comparison result judgement
Whether frequency point is broadcasting station frequency point.
Preferably, which further includes：
Memory module, for when determine the frequency point to be determined be broadcasting station frequency point when, by the broadcasting station frequency point
It is stored in broadcasting station list.
Preferably, the neighbouring frequency point includes：It is not less than one times of channel width with two lateral extents of the frequency point to be determined
Frequency point；
The relative signal intensity computing module includes：Acquisition module and computing module, wherein
The acquisition module is used to obtain the received signal strength of the neighbouring frequency point；
The computing module is used to subtract the received signal strength of the frequency point to be determined the reception of the neighbouring frequency point
Signal strength obtains the relative signal intensity of the frequency point to be determined.
Preferably, which further includes：Detection module, for detecting the received signal strength obtained and the signal
Whether the quantity of carrier wave frequency deviation calculates the relative signal intensity and the absolute carrier frequency deviation enough, waits sentencing if it is not, then switching
Determine frequency point to re-search for.
It is strong by receiving signal by above technical scheme it is found that this application provides a kind of broadcast channel search method and device
Degree and signal carrier frequency offset calculation relative signal intensity and absolute carrier frequency deviation, by relative signal intensity and absolute carrier frequency deviation with
Corresponding predetermined threshold value comparison, so that it is determined that whether frequency point to be determined is broadcasting station frequency point.It is provided by the present application that this is wide
It broadcasts channel search method and utilizes relative signal intensity constant principle of optimal threshold when different antennae configures, it is a set of most to realize use
Good threshold value is suitable for the purpose of arbitrary different antennae configuration, in addition, auxiliary judgement further is carried out using carrier wave frequency deviation, it can be preferable
It solves the problems, such as to be difficult to accurately to judge station location.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart for broadcast channel search method that the embodiment of the present application one provides；
Fig. 2 is a kind of flow chart for broadcast channel search method that the embodiment of the present application two provides；
Fig. 3 is the flow chart for another broadcast channel search method that the embodiment of the present application two provides；
Fig. 4 is a kind of structural schematic diagram for broadcast tuning device that the embodiment of the present application three provides；
Fig. 5 is a kind of structural schematic diagram for broadcast tuning device that the embodiment of the present application four provides；
Fig. 6 is the structural schematic diagram for another broadcast tuning device that the embodiment of the present application four provides.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Tuning is caused to easy to produce faulting of slab ends or leakage platform to solve to be difficult to adapt to reception antenna configuration variation in the prior art, with
And the problem of being difficult to accurately judge station location, this application provides a kind of broadcast channel search method and device, concrete scheme are as follows
It is described：
Embodiment one
The embodiment of the present application one provides a kind of broadcast channel search method, as shown in Figure 1, this method includes：
S101:Obtain the received signal strength and signal carrier frequency deviation of frequency point to be determined；
In this application, the reception frequency of broadcasting receiver is converted successively according to setting tuning frequency range section and tuning step-length
Point.When being switched to a certain frequency point, judge whether frequency range terminates, if frequency band search terminates, tuning process is completed；If frequency range is searched
Rope is not finished, then current frequency point is determined as frequency point to be determined, reads and store the received signal strength RSSI of frequency point to be determined
With signal carrier frequency deviation CFO.
Specifically, can be by the RSSI of acquisition and CFO storages in a list in the application.
S102:Frequency to be determined is calculated according to the received signal strength of neighbouring frequency point and the received signal strength of frequency point to be determined
The relative signal intensity of point, and, the absolute carrier frequency deviation of frequency point to be determined is determined according to signal carrier frequency deviation；
Include adjacent to frequency point：It is not less than the frequency point of one times of channel width with two lateral extents of frequency point to be determined；
Specifically, in this application, being believed according to the received signal strength of neighbouring frequency point and the reception of the frequency point to be determined
The relative signal intensity of frequency point to be determined described in number Strength co-mputation may include：
Obtain the received signal strength of neighbouring frequency point；
The received signal strength that the received signal strength of frequency point to be determined is subtracted to neighbouring frequency point, obtains frequency point to be determined
Relative signal intensity.
Determine that the absolute carrier frequency deviation of frequency point to be determined includes according to signal carrier frequency deviation：
Signal carrier frequency deviation is taken absolute value, absolute carrier frequency deviation is obtained.
S103:By relative signal intensity and preset relative signal intensity threshold value comparison, the first comparison result is obtained, with
And by absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison, obtain the second comparison result；
S104:Judge whether frequency point to be determined is broadcasting station frequency point with the second comparison result according to the first comparison result.
Specifically, judging whether frequency point to be determined is broadcasting station frequency point with the second comparison result according to the first comparison result
Including：
When relative signal intensity be more than relative signal intensity threshold value, and, absolute carrier frequency deviation be less than absolute carrier frequency deviation threshold
When value, then judge that frequency point to be determined is broadcasting station frequency point, otherwise, it is determined that frequency point to be determined is not broadcasting station frequency point.
By above technical scheme it is found that the broadcast channel search method that the embodiment of the present application one provides, strong by receiving signal
Degree and signal carrier frequency offset calculation relative signal intensity and absolute carrier frequency deviation, by relative signal intensity and absolute carrier frequency deviation with
Corresponding predetermined threshold value comparison, so that it is determined that whether frequency point to be determined is broadcasting station frequency point.It is provided by the present application that this is wide
It broadcasts channel search method and utilizes relative signal intensity constant principle of optimal threshold when different antennae configures, it is a set of most to realize use
Good threshold value is suitable for the purpose of arbitrary different antennae configuration, in addition, auxiliary judgement further is carried out using carrier wave frequency deviation, it can be preferable
It solves the problems, such as to be difficult to accurately to judge station location.
Embodiment two
On the basis of embodiment one, the embodiment of the present application two provides one kind with specifically broadcasting channel search method, specifically
As shown in Fig. 2, this method includes：
S101:Obtain the received signal strength and signal carrier frequency deviation of frequency point to be determined；
In this application, the reception frequency of broadcasting receiver is converted successively according to setting tuning frequency range section and tuning step-length
Point.When being switched to a certain frequency point, judge whether frequency range terminates, if frequency band search terminates, tuning process is completed；If frequency range is searched
Rope is not finished, then current frequency point is determined as frequency point to be determined, reads and store the received signal strength RSSI of frequency point to be determined
With signal carrier frequency deviation CFO.
Specifically, can be by the RSSI of acquisition and CFO storages in a list in the application.
S102:It is strong whether the quantity of the received signal strength and signal carrier frequency deviation that detect acquisition calculates relative signal enough
Degree and absolute carrier frequency deviation, re-search for if it is not, then switching frequency point to be determined；
Judge whether the quantity of the received signal strength stored in list and signal carrier frequency deviation calculates relative signal enough
Intensity and absolute carrier frequency deviation, if the quantity of the RSSI stored in list and CFO parameters calculates enough relative signal intensity with it is exhausted
To carrier wave frequency deviation, then program enters step S103；If the quantity of RSSI and CFO parameters is inadequate, switch frequency point to be determined again
Search.
S103:Frequency to be determined is calculated according to the received signal strength of neighbouring frequency point and the received signal strength of frequency point to be determined
The relative signal intensity of point, and, the absolute carrier frequency deviation of frequency point to be determined is determined according to signal carrier frequency deviation；
Include adjacent to frequency point：It is not less than the frequency point of one times of channel width with two lateral extents of frequency point to be determined；
Specifically, in this application, being believed according to the received signal strength of neighbouring frequency point and the reception of the frequency point to be determined
The relative signal intensity of frequency point to be determined described in number Strength co-mputation may include：
Obtain the received signal strength of neighbouring frequency point；
The received signal strength that the received signal strength of frequency point to be determined is subtracted to neighbouring frequency point, obtains frequency point to be determined
Relative signal intensity.
Determine that the absolute carrier frequency deviation of frequency point to be determined includes according to signal carrier frequency deviation：
Signal carrier frequency deviation is taken absolute value, absolute carrier frequency deviation is obtained.
Specifically, calculating relative signal intensity the Δ RSSI, Δ RSSI etc. of frequency point to be determined according to the RSSI parameters of storage
Its RSSI adjacent to frequency point is subtracted in the RSSI of frequency point to be determined, neighbouring frequency point is frequency point both sides to be adjudicated at a distance of more than or equal to one
The frequency point of times channel width.It is assumed that the both sides of frequency point f_1 to be determined are denoted as f_0 and f_2, corresponding RSSI respectively adjacent to frequency point
It is denoted as RSSI_1, RSSI_0, RSSI_2 respectively, it is as follows to calculate Δ RSSI：
Δ RSSI_10=RSSI_1-RSSI_0,
Δ RSSI_12=RSSI_1-RSSI_2,
Wherein, Δ RSSI_10 and Δ RSSI_12 indicates the relative signal intensity of frequency point to be determined.
Absolute carrier frequency deviation is calculated according to the CFO parameters of storage | CFO |, | CFO | it is absolute equal to frequency point CFO to be determined
Value, then frequency point f_1 to be determined | CFO | it calculates as follows：
| CFO_1 |=abs (CFO_1).
S104:By relative signal intensity and preset relative signal intensity threshold value comparison, the first comparison result is obtained, with
And by absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison, obtain the second comparison result；
Preset relative signal intensity threshold value RSSI_TH and absolute carrier frequency deviation threshold value CFO_TH, wherein in the application
In, this can be arranged in the application according to being to make FM receive demodulation audio to reach 26dB in the setting for relative signal intensity threshold value
Relative signal intensity threshold value be 9dB, to ensure tuning best results, naturally it is also possible to be set smaller than or more than 9dB appoint
Meaning value, faulting of slab ends situation may be had by being only less than 9dB, and may have leakage platform situation more than 9dB.For absolute carrier
The setting of frequency deviation threshold value can determine according to receiver crystal oscillator parameter, for example, 200ppm crystal under 110MHz carrier frequencies most
Big CFO is that 22kHz is not limited specifically then absolute carrier frequency deviation threshold value need to be set greater than the value of 22kHz, such as 30kHz
It is fixed.
S105:Judge whether frequency point to be determined is broadcasting station frequency point with the second comparison result according to the first comparison result.
Specifically, judging whether frequency point to be determined is broadcasting station frequency point with the second comparison result according to the first comparison result
Including：
When relative signal intensity be more than relative signal intensity threshold value, and, absolute carrier frequency deviation be less than absolute carrier frequency deviation threshold
When value, then judge that frequency point to be determined is broadcasting station frequency point, otherwise, it is determined that frequency point to be determined is not broadcasting station frequency point.
It is respectively compared relative signal intensity Δ RSSI, absolute carrier frequency deviation | CFO | with relative signal intensity threshold value RSSI_
TH, absolute carrier frequency deviation threshold value (CFO_TH) size come judge frequency point whether there is broadcasting station.
If for example, Δ RSSI_10 be more than RSSI_TH, and | CFO_1 | be less than CFO_TH, then judge f_1 frequency points for broadcast electricity
Platform frequency point；If alternatively, Δ RSSI_12 be more than RSSI_TH, and | CFO_1 | judge f_1 frequency points for broadcasting station less than CFO_TH
Otherwise frequency point judges that f_1 frequency points are non-broadcasting radio station frequency point.
If f_1 frequency points are determined as non-broadcasting radio station frequency point, switch frequency point and continue search for, if f_1 frequency points are judged to broadcasting
Radio station frequency point can then enter step S106, as shown in Figure 3.
S106：When it is broadcasting station frequency point to determine frequency point to be determined, broadcasting station frequency point is stored in broadcasting station list.
In this application, it will be determined as broadcasting station frequency point deposit broadcasting station list, switch frequency point after the completion of the process
It continues search for.
By above technical scheme it is found that the broadcast channel search method that the embodiment of the present application two provides, strong by receiving signal
Degree and signal carrier frequency offset calculation relative signal intensity and absolute carrier frequency deviation, by relative signal intensity and absolute carrier frequency deviation with
Corresponding predetermined threshold value comparison, so that it is determined that whether frequency point to be determined is broadcasting station frequency point.It is provided by the present application that this is wide
It broadcasts channel search method and utilizes relative signal intensity constant principle of optimal threshold when different antennae configures, it is a set of most to realize use
Good threshold value is configured suitable for arbitrary different antennae, in addition, further carrying out auxiliary judgement using carrier wave frequency deviation, can preferably solve difficulty
The problem of accurately to judge station location.Stable and accurate broadcast tuning can be realized using channel search method described herein, it is special
It is not that can effectively avoid being difficult to accurately judge faulting of slab ends phenomenon caused by station location in neighbouring frequency point.
Embodiment three
On the basis of embodiment one, this application provides a kind of broadcast tuning devices, as shown in figure 4, the device includes：
Signal strength acquisition module 201, carrier wave frequency deviation acquisition module 202, relative signal intensity computing module 203, absolute carrier frequency deviation
Computing module 204, relative signal intensity comparison module 205, carrier wave frequency deviation comparison module 206 and determination module 207, wherein
Signal strength acquisition module 201, the received signal strength for obtaining frequency point to be determined；
Carrier wave frequency deviation acquisition module 202, the signal carrier frequency deviation for obtaining frequency point to be determined；
Relative signal intensity computing module 203, the received signal strength for the neighbouring frequency point of basis and frequency point to be determined
Received signal strength calculates the relative signal intensity of frequency point to be determined；
In this application, neighbouring frequency point includes：It is not less than the frequency of one times of channel width with two lateral extents of frequency point to be determined
Point；
Relative signal intensity computing module 203 includes：Acquisition module and computing module, wherein
Acquisition module is used to obtain the received signal strength of neighbouring frequency point；
Computing module is used to subtract the received signal strength of frequency point to be determined the received signal strength of neighbouring frequency point, obtains
The relative signal intensity of frequency point to be determined.
Absolute carrier frequency offset calculation module 204, the absolute carrier for determining frequency point to be determined according to signal carrier frequency deviation
Frequency deviation；
Specifically, absolute carrier frequency offset calculation module 204 takes absolute value signal carrier frequency deviation, to obtain absolute carrier frequency
Partially.
Relative signal intensity comparison module 205 is used for relative signal intensity and preset relative signal intensity threshold value ratio
Compared with obtaining the first comparison result；
Carrier wave frequency deviation comparison module 206, for by absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison, obtaining
To the second comparison result；
Determination module 207, for judging whether frequency point to be determined is wide with the second comparison result according to the first comparison result
Broadcast radio station frequency point.
Specifically, when relative signal intensity is more than relative signal intensity threshold value, and, absolute carrier frequency deviation is less than absolute carrier
When frequency deviation threshold value, then judge that frequency point to be determined is broadcasting station frequency point, otherwise, it is determined that frequency point to be determined is not broadcasting station frequency
Point.
Example IV
The embodiment of the present application four provides a kind of more specifically broadcast tuning, as shown in figure 5, the device includes：Signal is strong
It spends acquisition module 201, carrier wave frequency deviation acquisition module 202, detection module 208, relative signal intensity computing module 203, absolutely carry
The inclined computing module 204 of wave frequency, relative signal intensity comparison module 205, carrier wave frequency deviation comparison module 206 and determination module 207,
In,
Signal strength acquisition module 201, the received signal strength for obtaining frequency point to be determined；
Carrier wave frequency deviation acquisition module 202, the signal carrier frequency deviation for obtaining frequency point to be determined；
Whether detection module 208, the quantity for detecting the received signal strength and the signal carrier frequency deviation that obtain are sufficient
Relative signal intensity and absolute carrier frequency deviation are enough calculated, is re-searched for if it is not, then switching frequency point to be determined；
Relative signal intensity computing module 203, the received signal strength for the neighbouring frequency point of basis and frequency point to be determined
Received signal strength calculates the relative signal intensity of frequency point to be determined；
In this application, neighbouring frequency point includes：It is not less than the frequency of one times of channel width with two lateral extents of frequency point to be determined
Point；
Relative signal intensity computing module 203 includes：Acquisition module and computing module, wherein
Acquisition module is used to obtain the received signal strength of neighbouring frequency point；
Computing module is used to subtract the received signal strength of frequency point to be determined the received signal strength of neighbouring frequency point, obtains
The relative signal intensity of frequency point to be determined.
Absolute carrier frequency offset calculation module 204, the absolute carrier for determining frequency point to be determined according to signal carrier frequency deviation
Frequency deviation；
Specifically, absolute carrier frequency offset calculation module 204 takes absolute value signal carrier frequency deviation, to obtain absolute carrier frequency
Partially.
Relative signal intensity comparison module 205 is used for relative signal intensity and preset relative signal intensity threshold value ratio
Compared with obtaining the first comparison result；
Carrier wave frequency deviation comparison module 206, for by absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison, obtaining
To the second comparison result；
Determination module 207, for judging whether frequency point to be determined is wide with the second comparison result according to the first comparison result
Broadcast radio station frequency point.
Specifically, when relative signal intensity is more than relative signal intensity threshold value, and, absolute carrier frequency deviation is less than absolute carrier
When frequency deviation threshold value, then judge that frequency point to be determined is broadcasting station frequency point, otherwise, it is determined that frequency point to be determined is not broadcasting station frequency
Point.
As shown in fig. 6, the device further includes：Memory module 209, for being broadcasting station frequency point when determining frequency point to be determined
When, which is stored in broadcasting station list.
Specifically, same or analogous ground can be referred to mutually between each embodiment of the application, it is no longer superfluous in this application
It states.
By above technical scheme it is found that the broadcast tuning device that the embodiment of the present application four provides, strong by receiving signal
Degree and signal carrier frequency offset calculation relative signal intensity and absolute carrier frequency deviation, by relative signal intensity and absolute carrier frequency deviation with
Corresponding predetermined threshold value comparison, so that it is determined that whether frequency point to be determined is broadcasting station frequency point.It is provided by the present application that this is wide
Broadcast tuning device utilize relative signal intensity constant principle of optimal threshold when different antennae configure, realize make it is a set of most preferably
Threshold value is suitable for arbitrary different antennae and configures ground purpose, in addition, further can preferably be solved using carrier wave frequency deviation progress auxiliary judgement
The problem of being certainly difficult to accurately judge station location.It can realize that stable and accurate broadcast is searched using tuning device described herein
Platform especially can effectively avoid being difficult to accurately judge faulting of slab ends phenomenon caused by station location in neighbouring frequency point.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the application.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of broadcast channel search method, which is characterized in that this method includes：
Obtain the received signal strength and signal carrier frequency deviation of frequency point to be determined；
The frequency to be determined is calculated according to the received signal strength of neighbouring frequency point and the received signal strength of the frequency point to be determined
The relative signal intensity of point, and, the absolute carrier frequency deviation of the frequency point to be determined is determined according to the signal carrier frequency deviation；
By the relative signal intensity and preset relative signal intensity threshold value comparison, the first comparison result is obtained, and, by institute
Absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison are stated, the second comparison result is obtained；
Judge whether the frequency point to be determined is broadcasting station frequency according to first comparison result and second comparison result
Point.
2. according to the method described in claim 1, it is characterized in that, further including：It is electric to broadcast when determining the frequency point to be determined
When platform frequency point, the broadcasting station frequency point is stored in broadcasting station list.
3. according to the method described in claim 1, it is characterized in that, the neighbouring frequency point includes：With the frequency point to be determined
Two lateral extents are not less than the frequency point of one times of channel width；
The basis adjacent to the received signal strength of received signal strength and the frequency point to be determined of frequency point calculate described in wait sentencing
The relative signal intensity for determining frequency point includes：
Obtain the received signal strength of the neighbouring frequency point；
The received signal strength that the received signal strength of the frequency point to be determined is subtracted to the neighbouring frequency point obtains described waiting sentencing
Determine the relative signal intensity of frequency point.
4. according to the method described in claim 1, it is characterized in that, described wait sentencing according to described in signal carrier frequency deviation determination
The absolute carrier frequency deviation for determining frequency point includes：
The signal carrier frequency deviation is taken absolute value, the absolute carrier frequency deviation is obtained.
5. according to the method described in claim 1, it is characterized in that, described compare according to first comparison result with described second
Whether it is that broadcasting station frequency point includes compared with frequency point to be determined described in result judgement：
When the relative signal intensity be more than the relative signal intensity threshold value, and, the absolute carrier frequency deviation be less than it is described absolutely
When to carrier wave frequency deviation threshold value, then judge that the frequency point to be determined is broadcasting station frequency point, otherwise, it is determined that the frequency point to be determined is not
It is broadcasting station frequency point.
6. according to the method described in claim 1, it is characterized in that, in the relative signal intensity for calculating the frequency point to be determined and
Before the absolute carrier frequency deviation of the frequency point to be determined, further include：
Whether the quantity for detecting the received signal strength and the signal carrier frequency deviation that obtain calculates the opposite letter enough
Number intensity and the absolute carrier frequency deviation, re-search for if it is not, then switching frequency point to be determined.
7. a kind of broadcast tuning device, which is characterized in that the device includes：Signal strength acquisition module, carrier wave frequency deviation obtain mould
Block, relative signal intensity computing module, absolute carrier frequency offset calculation module, relative signal intensity comparison module, carrier wave frequency deviation ratio
Compared with module and determination module, wherein
The signal strength acquisition module, the received signal strength for obtaining frequency point to be determined；
The carrier wave frequency deviation acquisition module, the signal carrier frequency deviation for obtaining the frequency point to be determined；
The relative signal intensity computing module, the received signal strength for the neighbouring frequency point of basis and the frequency point to be determined
Received signal strength calculates the relative signal intensity of the frequency point to be determined；
The absolute carrier frequency offset calculation module, for determining the absolute of the frequency point to be determined according to the signal carrier frequency deviation
Carrier wave frequency deviation；
The relative signal intensity comparison module is used for the relative signal intensity and preset relative signal intensity threshold value ratio
Compared with obtaining the first comparison result；
The carrier wave frequency deviation comparison module is used for the absolute carrier frequency deviation and preset absolute carrier frequency deviation threshold value comparison,
Obtain the second comparison result；
The determination module, for judging the frequency point to be determined according to first comparison result and second comparison result
Whether it is broadcasting station frequency point.
8. device according to claim 7, which is characterized in that the device further includes：
Memory module, for when it is broadcasting station frequency point to determine the frequency point to be determined, the broadcasting station frequency point to be stored in
Broadcasting station list.
9. device according to claim 7, which is characterized in that the neighbouring frequency point includes：With the frequency point to be determined
Two lateral extents are not less than the frequency point of one times of channel width；
The relative signal intensity computing module includes：Acquisition module and computing module, wherein
The acquisition module is used to obtain the received signal strength of the neighbouring frequency point；
The computing module is used to subtract the received signal strength of the frequency point to be determined the reception signal of the neighbouring frequency point
Intensity obtains the relative signal intensity of the frequency point to be determined.
10. device according to claim 7, which is characterized in that the device further includes：Detection module is obtained for detecting
The received signal strength and the quantity of the signal carrier frequency deviation whether calculate the relative signal intensity and described enough
Absolute carrier frequency deviation re-searches for if it is not, then switching frequency point to be determined.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943792A (en) * | 2019-11-18 | 2020-03-31 | 麦腾物联网技术有限公司 | Effective channel determination method and device and vehicle-mounted terminal |
| CN111294123A (en) * | 2019-04-12 | 2020-06-16 | 展讯通信（上海）有限公司 | FM signal noise processing method and device, storage medium and FM receiver |
| CN113316224A (en) * | 2021-05-08 | 2021-08-27 | 珠海市杰理科技股份有限公司 | Broadcast channel searching method, device, equipment terminal and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008113298A (en) * | 2006-10-31 | 2008-05-15 | Victor Co Of Japan Ltd | Radio receiver |
| CN101953078A (en) * | 2008-02-04 | 2011-01-19 | 天工方案公司 | Be used for system and method in detection of radio receiver radio station and search |
| CN102055489A (en) * | 2009-10-28 | 2011-05-11 | 博通集成电路（上海）有限公司 | Channel searching device and method for broadcasting receiver |
| CN103795484A (en) * | 2014-02-27 | 2014-05-14 | 江苏卓胜微电子有限公司 | Frequency-offset-following channel search method |
| CN103986483A (en) * | 2014-05-29 | 2014-08-13 | 上海斐讯数据通信技术有限公司 | System and method for removing FM false station of mobile phone |
| CN104980175A (en) * | 2014-04-04 | 2015-10-14 | 阿尔派株式会社 | Radio broadcast receiving apparatus and broadcast frequency detection method |
| CN105119674A (en) * | 2015-07-16 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Broadcasting station searching method and FM (frequency modulation) receiver |
| CN105812080A (en) * | 2014-12-31 | 2016-07-27 | 展讯通信（上海）有限公司 | Radio signal automatic searching device and method and frequency modulation radio |
-
2018
- 2018-03-20 CN CN201810228105.0A patent/CN108449153A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008113298A (en) * | 2006-10-31 | 2008-05-15 | Victor Co Of Japan Ltd | Radio receiver |
| CN101953078A (en) * | 2008-02-04 | 2011-01-19 | 天工方案公司 | Be used for system and method in detection of radio receiver radio station and search |
| CN102055489A (en) * | 2009-10-28 | 2011-05-11 | 博通集成电路（上海）有限公司 | Channel searching device and method for broadcasting receiver |
| CN103795484A (en) * | 2014-02-27 | 2014-05-14 | 江苏卓胜微电子有限公司 | Frequency-offset-following channel search method |
| CN104980175A (en) * | 2014-04-04 | 2015-10-14 | 阿尔派株式会社 | Radio broadcast receiving apparatus and broadcast frequency detection method |
| CN103986483A (en) * | 2014-05-29 | 2014-08-13 | 上海斐讯数据通信技术有限公司 | System and method for removing FM false station of mobile phone |
| CN105812080A (en) * | 2014-12-31 | 2016-07-27 | 展讯通信（上海）有限公司 | Radio signal automatic searching device and method and frequency modulation radio |
| CN105119674A (en) * | 2015-07-16 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Broadcasting station searching method and FM (frequency modulation) receiver |
Non-Patent Citations (1)
| Title |
|---|
| 刘彦等: "一种新型的调频收音机电台搜索方案", 《计算机与信息技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111294123A (en) * | 2019-04-12 | 2020-06-16 | 展讯通信（上海）有限公司 | FM signal noise processing method and device, storage medium and FM receiver |
| CN111294123B (en) * | 2019-04-12 | 2022-03-29 | 展讯通信（上海）有限公司 | FM signal noise processing method and device, storage medium and FM receiver |
| CN110943792A (en) * | 2019-11-18 | 2020-03-31 | 麦腾物联网技术有限公司 | Effective channel determination method and device and vehicle-mounted terminal |
| CN113316224A (en) * | 2021-05-08 | 2021-08-27 | 珠海市杰理科技股份有限公司 | Broadcast channel searching method, device, equipment terminal and storage medium |
| CN113316224B (en) * | 2021-05-08 | 2022-11-15 | 珠海市杰理科技股份有限公司 | Broadcast channel searching method, apparatus, device terminal and storage medium |
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