CN105162895B - A kind of method for obtaining aircraft address in S mode request signal - Google Patents
A kind of method for obtaining aircraft address in S mode request signal Download PDFInfo
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- CN105162895B CN105162895B CN201510527225.7A CN201510527225A CN105162895B CN 105162895 B CN105162895 B CN 105162895B CN 201510527225 A CN201510527225 A CN 201510527225A CN 105162895 B CN105162895 B CN 105162895B
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- Prior art keywords
- address
- request signal
- mode
- matrix
- aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
Abstract
The invention discloses a kind of methods for obtaining aircraft address in S mode request signal, this method is by receiving S mode roll-call request signal, it samples S mode request signal and obtains inquiry message, the multinomial and calculation formula that inquiry message is provided using aviation accessory 10, the aircraft address of S mode roll-call inquiry is calculated with matrix-style, can quickly and accurately calculate S mode address in practice.
Description
Technical field
The present invention relates to communications applications field, specifically, being to be related to aircraft address in a kind of acquisition S mode request signal
Method.
Background technology
Application of the secondary surveillance radar in blank pipe monitoring field is more and more extensive, has become the important of blank pipe monitoring field
One of means, wherein S mode, which are called the roll, inquires in secondary surveillance radar using also relatively broad.For the S of secondary surveillance radar
Pattern roll-call request signal is in answering machine S mode address known to inquisitor, and roll-call inquiry is carried out to aerial answering machine.
And roll-call inquiry is carried out to aerial answering machine under unknown situation for detecing receiving unit, it is necessary to know the S for inquiry of being called the roll
Mode address, this needs the calculating of large amount of complex, very inconvenient in actual use.
Since the anti-method for deriving aircraft address in S mode request signal is excessively complicated, under normal circumstances, only by S
Mode query data collect, and by the calculating of large amount of complex, can just calculate aircraft address.There is presently no a kind of direct
The method that the aircraft address that S mode is inquired quickly is calculated by inquiry message in S mode request signal.
Invention content
The technical problems to be solved by the invention are to provide a kind of method for obtaining aircraft address in S mode request signal,
To solve the problems, such as that calculation amount is complicated, it is longer to take in the method for aircraft address in original calculating S mode request signal.
In order to solve the above technical problems, the present invention provides a kind of method for obtaining aircraft address in S mode request signal,
Include the following steps：
It receives the request signal that S mode is called the roll and generation S mode inquiry message is sampled to it；
The inquiry message is carried out to resolve into information bit and check bit AP；
Cyclic redundancy check is obtained according to multinomial and information bit；
Obtained cyclic redundancy check and AP codes are subjected to XOR operation and obtain address check sequence；
The constant matrices of address check sequence and setting is subjected to binary system modulus and obtains aircraft address.
Further, the cyclic redundancy check is obtained by carrying out complementation to information bit and multinomial.
Further, the method for setting the constant matrices includes, and address correction sequence is showed with matrix-style
And merge and obtain a new matrix, which is converted into another numeric type matrix, and establish an inquiry table, by the numeric type
Matrix is put into the inquiry table, by tabling look-up to obtain the aircraft address during use.
Further, the multinomial and AP codes are calculated by aviation accessory 10.
Further, the numeric type matrix is the matrix of 24 row * 24 row.
Compared with prior art, a kind of method for obtaining aircraft address in S mode request signal of the present invention, makes up
For difficulty in computation in original method greatly and the problem of the deficiency of analysis, the content for making detection is more comprehensive, verify after tested,
The method that the matrix-style calculates S mode aircraft address, obtains practical application in a device, and it is quick, efficient, accurate to have
The advantages that calculating.
Description of the drawings
Fig. 1 is a kind of process principle figure for obtaining the method for aircraft address in S mode request signal of the present invention.
Fig. 2 be the embodiment of the present invention told to S mode inquiry message decomposition diagram.
Fig. 3 is the S mode inquiry uplink format signal of the calculating S mode aircraft address described in the embodiment of the present invention
Figure.
Specific embodiment
The present invention is described in further detail, but not as a limitation of the invention below in conjunction with attached drawing.
Present invention is mainly applied to quick, easily anti-can release the S inquired after S mode roll-call request signal is received
Pattern answering machine address.The principle that the present invention realizes is, S mode request signal aircraft address, profit are calculated by matrix-style
It is verified with the AP included in UF0, UF4, UF5, UF16, UF20, UF21, UF24 form in S mode request signal, by anti-
It pushes away to obtain the aircraft address of 24bit.
In the present invention, AP codes are made of P codes (parity sequences) and A codes (address check sequence) two parts；Secondly, P
Code is generated by signal bit sequence (m1, m2, m3 ..., mk), (wherein k=32 or 88 is short transmission or long transmission respectively).
As shown in Figure 1, a kind of method for obtaining aircraft address in S mode request signal disclosed in this invention, including such as
Lower step：
Step 1: it receives the request signal that S mode is called the roll and generation S mode inquiry message is sampled to it；
Step 2: the inquiry message is carried out to resolve into information bit and check bit AP；
Step 3: cyclic redundancy check is obtained according to multinomial and information bit；
Step 4: obtained cyclic redundancy check and AP codes are carried out XOR operation obtains address check sequence；
Step 5: the constant matrices of address check sequence and setting is carried out binary system modulus obtains aircraft address
Specifically, in step 1 and two, by receiving the S mode request signal of above-mentioned UF forms, S is obtained after sampling
Mode query information S (X), by S (X) information decompositions into information bit M (X) and check bit AP.Illustrate S mode inquiry message point
Solution figure is as shown in Figure 2.
Then, in step 3, according to multinomial G (X) and inquiry message M (X), P (X) is obtained；24bit odd even bit sequences
Code is generated using multinomial G (X)：Multinomial G (X) represents as follows：
G (x)=1+x3+x10+x12+x13+x14+x15+x16+x17+x18+x19+x20+x21+x22+x23+x24；Wherein, multinomial G
(x) aeronautical telecommunication attachment 10 is also based on to provide.
Therefore P (X) can be obtained remainder and be obtained by formula P (X)=M (X) %G (X), and P (X) is M (X) to G (X)
CRC check.
In step 4, XOR operation is carried out using AP generation formula：Obtain A (X)；
It can deriveWherein A (X) is address check sequence, and P (X) is even-odd check sequence
Row.
With matrix-style by address correction sequence b1, b2, b3 ..., b24 shows；
B1=[1 0000000000000000000000 0]；
B2=[1 1000000000000000000000 0]；
B3=[1 1100000000000000000000 0]；
B4=[1 1110000000000000000000 0]；
B5=[1 1111000000000000000000 0]；
B6=[1 1111100000000000000000 0]；
B7=[1 1111110000000000000000 0]；
B8=[1 1111111000000000000000 0]；
B9=[1 1111111100000000000000 0]；
B10=[1 1111111110000000000000 0]；
B11=[1 1111111111000000000000 0]；
B12=[1 1111111111100000000000 0]；
B13=[1 1111111111110000000000 0]；
B14=[0 1111111111111000000000 0]；
B15=[1 0111111111111100000000 0]；
B16=[0 1011111111111110000000 0]；
B17=[0 0101111111111111000000 0]；
B18=[0 0010111111111111100000 0]；
B19=[0 0001011111111111110000 0]；
B20=[0 0000101111111111111000 0]；
B21=[0 0000010111111111111100 0]；
B22=[0 0000001011111111111110 0]；
B23=[0 1000000101111111111111 0]；
B24=[0 0100000010111111111111 1]；
Merging obtains new matrix B.New matrix B represents as follows：
B=[b1；b2；b3；b4；b5；b6；b7；b8；b9；b10；b11；b12；b13；b14；b15；b16；b17；b18；
b19；b20；b21；b22；b23；b24]；
After obtaining modified address sequence matrix B, B matrixes are converted into the matrix that numeric type matrix Z, Z are one 24 × 24.
Z matrixes are a constant in actual use, establish an inquiry table in practical applications, directly constant is placed in table, are used
When table look-at.Z matrix representation methods are：
Again by the A obtained in step 3 (X) information, it is expressed as column matrix A：
If A (X) information obtained is A (X)=0x5002A4 with hexadecimal representation；A gust A is so enumerated to be expressed as：
A=[0；1；0；1；0；0；0；0；0；0；0；0；0；0；1；0；1；0；1；0；0；1；0；0]
According to Address_24=mod (Z*A, 2) formula, you can obtain 24bit aircrafts address
The present invention inquires upstream format signal by receiving S mode, acquires the inquiry message S (X) received, will inquire
Information S (X) resolves into M (X) and AP two parts, decomposed information are as shown in Figure 3.CRC check is calculated with M (X), with AP code exclusive or
Afterwards, by matrix-style it is quick, easily calculate 24bit aircrafts address.
Several preferred embodiments of the present invention have shown and described in above description, but as previously described, it should be understood that the present invention
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through in the scope of the invention is set forth herein
It is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in this hair
In the protection domain of bright appended claims.
Claims (4)
- A kind of 1. method for obtaining aircraft address in S mode request signal, it is characterised in that include the following steps：It receives the request signal that S mode is called the roll and generation S mode inquiry message is sampled to it；The inquiry message is carried out to resolve into information bit and check bit AP；Cyclic redundancy check is obtained according to multinomial G (x) and information bit, the multinomial is G (x)=1+x3+x10+x12+x13+x14+ x15+x16+x17+x18+x19+x20+x21+x22+x23+x24；Obtained cyclic redundancy check and AP codes are subjected to XOR operation and obtain address check sequence；The constant matrices of address check sequence and setting is subjected to binary system modulus and obtains aircraft address, sets the constant matrices Method include, with matrix-style by address correction sequence b1, b2, b3 ..., b24 shows, and merge obtain modifiedly Location sequence matrix B=[b1；b2；b3；b4；b5；b6；b7；b8；b9；b10；b11；b12；b13；b14；b15；b16；b17；b18； b19；b20；b21；b22；b23；B24], which is then converted to another numeric type matrix, and establish The numeric type matrix is put into the inquiry table by one inquiry table, by tabling look-up to obtain the aircraft address during use.
- 2. the method for aircraft address in S mode request signal is obtained as described in claim 1, which is characterized in that the CRC schools Code is tested to obtain by carrying out complementation to information bit and multinomial.
- 3. the method for aircraft address in S mode request signal is obtained as described in claim 1, which is characterized in that described multinomial Formula and AP codes are calculated by aviation accessory 10.
- 4. the method for aircraft address in S mode request signal is obtained as described in claim 1, which is characterized in that the numerical value Type matrix is the matrix of 24 row * 24 row.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183764A (en) * | 2010-12-31 | 2011-09-14 | 成都天奥信息科技有限公司 | Intermediate frequency digital processing method of S-mode interrogation signal |
| CN102621544A (en) * | 2012-03-23 | 2012-08-01 | 四川川大智胜软件股份有限公司 | Synergic inquiring method for local multiple S-mode secondary monitoring radar stations |
| CN102879775A (en) * | 2012-09-20 | 2013-01-16 | 陕西长岭电子科技有限责任公司 | Asking and answering method based on secondary radar |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20070623A1 (en) * | 2007-09-03 | 2009-03-04 | Selex Sistemi Integrati Spa | DETECTION OF REPLICATIONS IN A SECONDARY SURVEILLANCE RADAR |
| DE102008010882A1 (en) * | 2008-02-25 | 2009-09-03 | IAD Gesellschaft für Informatik, Automatisierung und Datenverarbeitung mbH | Device and method for direction estimation and / or decoding of secondary radar signals |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183764A (en) * | 2010-12-31 | 2011-09-14 | 成都天奥信息科技有限公司 | Intermediate frequency digital processing method of S-mode interrogation signal |
| CN102621544A (en) * | 2012-03-23 | 2012-08-01 | 四川川大智胜软件股份有限公司 | Synergic inquiring method for local multiple S-mode secondary monitoring radar stations |
| CN102879775A (en) * | 2012-09-20 | 2013-01-16 | 陕西长岭电子科技有限责任公司 | Asking and answering method based on secondary radar |
Non-Patent Citations (1)
| Title |
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| 浅析S模式地址分配方案;赵连军;《空中交通管理》;20111231;全文 * |
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