CN107528611A - Odd number user's L G mold sync quadrature frequency hoppings radio station method for separating - Google Patents
Odd number user's L G mold sync quadrature frequency hoppings radio station method for separating Download PDFInfo
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- CN107528611A CN107528611A CN201710756622.0A CN201710756622A CN107528611A CN 107528611 A CN107528611 A CN 107528611A CN 201710756622 A CN201710756622 A CN 201710756622A CN 107528611 A CN107528611 A CN 107528611A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
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Abstract
In the case of communication countermeasure field, more particularly to the optimal frequency-hopping sequences race of L G Construction of A Model, the sorting of odd number user's synchronized orthogonal Frequency Hopping Signal.A kind of odd number user L G mold sync quadrature frequency hoppings radio station method for separating, the frequency set received is mapped as binary sequence, standard is established according to the result of first mutual XOR of moment sequential value, because different address code and all address code XOR results are different, subsequently received each moment frequency XOR value and Comparison of standards are simultaneously sorted.Frequency hop sequences collection is generated for L G models, when number of users is odd number, it is not necessary to carry out direction finding and network information parameter measurement, only can be carried out sorting by sequential value, be simply easily achieved.
Description
Technical field
In the case of the invention belongs to communication countermeasure field, more particularly to the optimal frequency-hopping sequences race of L-G Construction of A Model, very
The Frequency Hopping Signal sorting of number user's synchronized orthogonal.
Background technology
In the last few years, frequency hopping communications was with its very strong anti-interference and networking application ability and relatively low intercepting and capturing characteristic and in army
The thing communications field is widely applied and tremendous expansion.Therefore, grinding for Frequency Hopping Communication Networks and its net platform method for separating
Study carefully, had very important significance in communication countermeasure field.On the one hand, lead to as confrontation side, it is necessary to fully study various frequency hoppings
Believe the networking mode in radio station, the principle of its known whole communication process, so as to the communication expansion tracking interference to enemy, obtain enemy
Square information；On the other hand, to the further investigation of frequency hopping net platform method for separating, be advantageous to improve the military communication of itself, protect oneself
The communication security in square hopped-frequency pulses radio station.
When multiple frequency hopping radio sets synchronize networking, using the optimal Families of Frequency-Hopping Sequences of L-G Construction of A Model, building method is such as
Shown in Fig. 1.L-G models are constructed based on the n level m-sequence generators on finite field gf (2), with generator r (r≤n) individual (phase
Adjacent level or nonadjacent level) register output and some r weights user code after exclusive-OR, go to control frequency synthesis item by item
Device.Mutually shift register taps output is j in the same time0…jr-1, different address code v is used for different radio station0…vr-1,
Tap output and address code step-by-step XOR obtain Sv and control frequency synthesis, frequency mapping as shown in Fig. 2 using 8 bit address codes as
Example.Different net platforms control frequency synthesizer after adding using different address code register output mould two identical with m-sequence generator,
So that frequency does not collide in communication process.Hopping frequencies collection, frequency hopping rate, the jumping moment in networking radio station are all identical, i.e.,
It can be described as synchronized orthogonal net platform.Existing frequently-used method mainly according to the difference of synchronizing frequency, the difference of network information parameter,
DOA difference is sorted, but frequency hopping net platform networking process is short and is not easy to scout, and the non-partner of network information parameter is difficult to obtain
Take；Frequency and deflection are easily influenceed by electromagnetic environment, and deflection measure in a practical situation it is more complicated.So research one
The simple resolved way of kind is extremely necessary.
The content of the invention
The technical problems to be solved by the invention are to differentiate each frequency values in the frequency set mutually reached in the same time respectively to belong to
Which net platform.For the Families of Frequency-Hopping Sequences of L-G models generation, because each net platform frequency is taken out by address code and shift register
Head output XOR is determined that mutually shift register taps output is identical in the same time, and each net platform address code is fixed and difference (such as
001 0) user code is that, different net platform frequency hop sequences value XOR results are equal to appropriate address code in 4 bit address codes
XOR result.The frequency set received is mapped as binary sequence, according to the result of first mutual XOR of moment sequential value
Standard is established, due to different, the subsequently received each moment frequency of different address code and all address code XOR results
XOR value and Comparison of standards are simultaneously sorted.
A kind of odd number user L-G mold sync quadrature frequency hoppings radio station method for separating, is comprised the following steps that：
S1, the frequency received is mapped as binary sequence, such as Fig. 3；
S2, the frequency collection that receives of statistics be N number of moment, with T1-TN expressions, each m user of moment, and it is expressed as 1-
M, wherein, m is odd number, and initialization E [] is used for depositing separation results；
S3, note T1 moment Binary system sequences set are U=[u1,u2…um], wherein, u1~umRespectively m user is in T1
Carve the result that the frequency that receives is mapped as binary sequence, be deposited into E (:, 1) and=U；
S4, each sequential value and all sequences value step-by-step XOR in Binary system sequences set U described in S3 is made, as a result deposited
Enter matrix
Matrix first is classified as the sequential value and T1 moment all sequences value XOR results of user 1, is designated as S1, matrix second is classified as user 2
Sequential value and T1 moment all sequences value XOR results, be designated as S2, matrix m is classified as user m sequential value and T1 moment institutes
There is sequential value XOR result, be designated as Sm；
S5, moment cycle-index is set as N, then the Binary system sequences set at Tq moment is fq=[f1,f2…fm], wherein, q=
2；
S6, user's cycle-index is set as m, calculate fiWith all f XORsWherein, i=1；
S7, compare row in S described in T described in S6 and S4, if the row in T described in S6 are identical with Sk row in S described in S4,
Determination frequency fiBelong to k-th of net platform, by fiIt is stored in fq ' (k)=fi, wherein, k=1,2,3 ..., m；
If S8, i ＜ m, i=i+1 is made, returns to S5；
S9, make E (:, q) and=fq ', judged, if q ＜ N, making q=q+1, returning to S6, otherwise circulation terminates, every in E
The frequency sequence of one user of behavior one, that is, complete sorting.
The beneficial effects of the invention are as follows：
Frequency hop sequences collection is generated for L-G models, when number of users is odd number, it is not necessary to carry out direction finding and network information ginseng
Number measurement, only can be carried out sorting, is simply easily achieved by sequential value.
Brief description of the drawings
Fig. 1 is L-G Construction of A Model frequency hop sequences.
Fig. 2 is that sequence mapping is frequency figure.
Fig. 3 is mapped as binary sequence figure for frequency is counter.
Fig. 4 is the inventive method flow chart.
Embodiment
The present invention will be described below in conjunction with the accompanying drawings.
The present invention is sorted in 4 moment of reception, 5 user's frequency collection, each user code 4：
The detection implementation of embodiment is as shown in Figure 4.
Consider four moment j=[0,001 0,110 0,010 1101] address code v=[0,000 0001 of L-G tap sequences
0110 1,001 1100] frequency hop sequences
Step is specific as follows：
Step 1：The frequency set received is mapped as binary sequence.
Step 2：It is 4 moment to count the frequency collection received, and each 5 users of moment, m is odd number.
Step 3：The Binary system sequences set at T1 moment is U=[0,000 0,001 0,111 1,000 1101], and be stored in E (:,
1)=U.
Step 4：The result deposit S of each frequency values and all frequency values step-by-step XORs in U is made, matrix first is classified as use
The sequential value at family 1 and T1 moment all sequences value XOR results, are designated as S1, each column is arranged by order from small to large.
Step 5：The Binary system sequences set at T2 moment is f2=[0,000 0,110 0,111 1,010 1111].
Step 6：I=1, T=[0,000 0,110 0,111 1,010 1111]=S3, so 0000 belongs to S3 and corresponds to user,
F2 ' (3)=0000.
Step 7：I=2, T=[0,000 0,001 0,110 1,001 1100]=S2, so 0110 belongs to S2 and corresponds to user,
F2 ' (2)=0110.
Step 8：I=3, T=[0,000 0,001 0,111 1,000 1101]=S1, so 0111 belongs to S1 and corresponds to user,
F2 ' (1)=0111.
Step 9：I=4, T=[0,000 0,101 1,010 1,100 1101]=S5, so 1010 belong to S5 and correspond to user,
F2 ' (5)=1010.
Step 10：I=5, T=[0,000 0,101 1,000 1,001 1111]=S4, so 1111 belong to S4 and correspond to user,
F2 ' (4)=1111.
Step 11：That is T2 moment f2 '=[0,111 0,110 0,000 1,111 1010], and be stored in E (:, 2) and=f2 '.
Step 12：The Binary system sequences set at T3 moment is f3=[0,010 0,011 0,100 1,011 1110]
Step 13：Be carved with to Binary system sequences set f3 repeat steps five to step 9 similar process, i.e. during T3 f3 '=
[0,011 0,010 0,100 1,011 1110], and be stored in E (:, 3) and=f3 '.
Step 14：The Binary system sequences set at T4 moment is f4=[0,001 0,100 1,011 1,100 1101].
Step 15：Be carved with to Binary system sequences set f4 repeat steps five to step 9 similar process, i.e. during T4 f4 '=
[1,100 1,101 1,011 0,100 0001], and be stored in E (:, 4) and=f4 '.
Step 10 six：Obtaining five users, 4 moment frequency values is respectively
Binary sequence corresponding to first user's T1-T4 moment frequency is followed successively by：0000 0,111 0,011 1100,
Binary sequence corresponding to second user's T1-T4 moment frequency is followed successively by：0001 0,110 0,010 1101,
Binary sequence corresponding to third party T1-T4 moment frequencies is followed successively by：0111 0,000 0,100 1011,
Binary sequence corresponding to 4th user's T1-T4 moment frequency is followed successively by：1000 1,111 1,011 0100,
Binary sequence corresponding to 5th user's T1-T4 moment frequency is followed successively by：1101 1010 1110 0001.
Claims (1)
1. a kind of odd number user L-G mold sync quadrature frequency hoppings radio station method for separating, it is characterised in that comprise the following steps that：
S1, the frequency received is mapped as binary sequence；
The frequency collection that S2, statistics receive is N number of moment, is represented with T1-TN, each m user of moment, is expressed as 1-m,
Wherein, m is odd number, and initialization E [] is used for depositing separation results；
S3, note T1 moment Binary system sequences set are U=[u1,u2…um], wherein, u1~umRespectively m user connects at the T1 moment
The frequency received is mapped as the result of binary sequence, be deposited into E (:, 1) and=U；
S4, each sequential value and all sequences value step-by-step XOR in Binary system sequences set U described in S3 is made, be as a result stored in square
Battle array
Matrix
One is classified as the sequential value and T1 moment all sequences value XOR results of user 1, is designated as S1, matrix second is classified as the sequence of user 2
Value and T1 moment all sequences value XOR results, are designated as S2, and matrix m is classified as user m sequential value and T1 moment all sequences
It is worth XOR result, is designated as Sm；
S5, moment cycle-index is set as N, then the Binary system sequences set at Tq moment is fq=[f1,f2…fm], wherein, q=2；
S6, user's cycle-index is set as m, calculate fiWith all f XORsWherein, i=1；
S7, compare row in S described in T described in S6 and S4, if the row in T described in S6 are identical with Sk row in S described in S4, judge
Frequency fiBelong to k-th of net platform, by fiIt is stored in fq ' (k)=fi, wherein, k=1,2,3 ..., m；
If S8, i ＜ m, i=i+1 is made, returns to S5；
S9, make E (:, q) and=fq ', judged, if q ＜ N, making q=q+1, returning to S6, otherwise circulation terminates, per a line in E
For the frequency sequence of a user, that is, complete sorting.
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| CN108462509A (en) * | 2018-03-26 | 2018-08-28 | 西安电子科技大学 | Asynchronous frequency hopping net platform method for separating based on time-frequency figure information |
| CN108964702A (en) * | 2018-08-24 | 2018-12-07 | 电子科技大学 | For the inversion method after frequency hop sequences Random Maps in frequency hopping communications |
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