CN105491564A - Method for establishing a secure communication link in a multi-UAV environment - Google Patents
Method for establishing a secure communication link in a multi-UAV environment Download PDFInfo
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- CN105491564A CN105491564A CN201510828018.5A CN201510828018A CN105491564A CN 105491564 A CN105491564 A CN 105491564A CN 201510828018 A CN201510828018 A CN 201510828018A CN 105491564 A CN105491564 A CN 105491564A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18504—Aircraft used as relay or high altitude atmospheric platform
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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Abstract
The present invention discloses a method for establishing a secure communication link in a multi-UAV environment and mainly solves the problems that the link state is unstable and data is easily captured, deleted and even tampered by a third party due to frequent changes for a network topology in the existing Unmanned Aerial Vehicle (UAV) communication technology. The technical scheme of the present invention is as follows: satellites and Airborne Early Warning Aircrafts (AEW) are efficiently utilized to manage UAV nodes in terms of data transmission requirements for the UAV; a reliable link look-up and establishing method for the UAV communication is designed; a reliable interaction protocol is used when establishing the communication link so as to avoid the false communication requests and responses and prevent the link information from being tampered by malicious nodes; and data is encrypted with a private key allocated by a ground station so as to ensure the safety of messages and improve the stability and security for the UAV communication; meanwhile, the survivability of the system is enhanced by providing effective solutions for the condition of damaged link. The method provided by the invention can be used for establishing a secure communication link in a multi-UAV environment.
Description
Technical field
The invention belongs to network communication field, relate to dynamic group net and network security technology, refer to especially and not fix in network topology structures such as UASs, adopt the network system of wireless link between node, can be used for the foundation of secure communications links between aviation flight equipment.
Background technology
Along with the development of unmanned air vehicle technique, it is extensive in the application such as electronic countermeasures, communication repeating demand.At present, unmanned plane still unit work of executing the task is main.Countries in the world, unmanned plane is executed the task, and general adopts rear ground control station directly to the mode of single rack or multiple UAVs remote control, is a kind of star control topology structure centered by the control centre of rear; But, along with lower bound time stamp, the task that unmanned plane is born becomes increasingly complex, single rack unmanned plane cannot complete alone the tasks such as search scouting, information, supervision, multiple no-manned plane collaborative work effect will promote greatly, but introduce multiple no-manned plane collaborative work, certainly will bring communication issue, this limits the difficult point that unmanned plane collaborative work is come into operation always, is also the focus of present unmanned plane research.
Node in unmanned plane network can be in mobile status usually, and leaves randomly or add network, and this just causes the change of mutual interference relationships between node, and the relation that namely whether node uses channel to conflict changes.Meanwhile, the business load in network is also in continuous change, and unmanned plane network should adapt to these dynamic changes and dynamically change route, to improve communication performance.Up to now, the star control structure that it is core that UAV Communication pattern mostly adopts with rear command centre, in this mode, commanding in the rear center directly may manipulate a frame or multiple UAVs or manipulate multiple UAVs as relaying indirectly by some unmanned planes.Although it is lower that the former realizes cost, comparatively large by distance limit, and the latter's survivability is not strong, if repeater is ruined, affects the overall situation.These two kinds of modes all rely on and the contacting of communication for the rear base, and lack direct communication, the collaborative ability with cooperating between unmanned plane.Nowadays, unit process and adaptability to changes improve, if having substitute property between unit in the working cell based on a group of planes, thus the reliability of combat unit can be improved greatly.If also there are many approach with the communication at commanding in the rear center in a group of planes, use and will be naturally conducive to the execution of task as the mode of operation of the elementary cell of executing the task based on a group of planes.Obviously, the information exchange capacity reliability made with commanding in the rear center or relay system increases by this mode of operation, also therefore improves the reliability that a group of planes is executed the task.
Multiple no-manned plane collaborative work has become the inexorable trend of unmanned air vehicle technique development, and also become the important ring expanding unmanned plane application, this field receives increasing concern in recent years.
Application number is a kind of collaborative interactive method proposing unmanned plane cluster in " the collaborative interactive method of unmanned plane cluster and the visual navigation system of unmanned plane " of 201110237061.6, unmanned plane in cluster forms unmanned plane cooperative groups according to satisfying condition, then determine to organize interior route, again according to the Link State allocating task of route, the motion state of the multiple UAVs in unmanned plane cooperative groups assesses described Link State, and upgrades the unmanned plane of described unmanned plane cooperative groups and the collaborative task of every frame unmanned plane according to assessment result.The method can assess its Link State according to the motion state of unmanned plane, and according to route between Link State determination machine, but it is intensive and better connective that the method is only limitted to unmanned plane cluster, the situation of network environment safety, and do not consider the safety issue that exists in communication process, also not impaired to node, the situation such as to be caught is considered simultaneously.
Propose a kind of by adjustment signal strength signal intensity under a kind of multiple no-manned plane environment that number of patent application is 201510246514.X in Cooperative Security communication means, i.e. network coverage thus ensure that communication range reaches minimum with the object reaching secure communication.Data encryption in secure communication described in the method and communication process has nothing to do, and only considers and between connective and coverage, obtains one balance preferably by controlling power of communications, really do not solve safety problem, also can not ensure the connection between unmanned plane.
Due to the opening of unmanned plane network service, the node in network is easy to be subjected to various types of attack, therefore needs to set up suitable security mechanism to ensure the communication security of unmanned plane.Its intrinsic open network communication environment, space equipment is natural has exposed property, and between node, communication adopts wireless link, and cause the easy victim of communication data to be intercepted and captured, delete and even distort, node legal in addition is easily subject to the spoof attack of illegal node.Data link between unmanned plane is responsible for the important task such as safety monitoring and task distribution of various data, just unmanned plane network continued, the key point of safe handling.The data link safe and reliable for the connection setup between unmanned plane one is very important.
Summary of the invention
The topological structure that the object of the invention is to for Communication Network for UAVS changes frequently, communication data is easily captured by third party, delete the situation of even distorting, a kind of method for setting up secure communications links under multiple no-manned plane environment is proposed, to solve above-mentioned the deficiencies in the prior art, ensure the safe and reliable communication between unmanned plane.
For achieving the above object, technical scheme of the present invention comprises as follows:
(1) encryption key distribution:
Ground station is distribute respective key K G between each satellite G by up link
ag
b(a, b ∈ [1, N
g]), N
grepresent the quantity of satellite, for distributing respective key K G between each satellite and each early warning plane P
ap
i(i ∈ [1, N
p]), N
prepresent the quantity of early warning plane, for distributing key K U between two between unmanned plane
xu
y(x, y ∈ [1, N
u]), N
urepresent the quantity of unmanned plane, simultaneously for also to distribute respective key K P between unmanned plane U and early warning plane P
iu
x, and issue public keys K
c;
Early warning plane search unmanned plane around also registration forms a group of planes, and group of planes information is handed over to the management satellite in this region;
(2) link is searched
Assuming that at sheet [T cycle time
t, T
t+1] interior satellite cover under each group of planes relative position remain unchanged, unmanned plane is at [T
t, T
t+1] first time communication in the time interval needs the path finding destination node, sets up the communication link of safety;
(3) path stores
From sheet [T cycle time
t, T
t+1] initial, the secure communications links that source unmanned plane is set up by step (2) arrives destination node, and is deposited in routing table by this communication link, if at this cycle [T
t, T
t+1] within there is no the situation of node failure or link congestion, then routing table remains unchanged, otherwise, routing table is upgraded, re-executes step (2) by source unmanned plane node, set up new routing table, until the next cycle;
(4) troubleshooting
When the link set up by (2) occurs that node damages, or due to congested cause Link State disabled situation time, send Trouble Report by management satellite ground station, while make respective handling according to damage situations:
For the impaired situation of unmanned plane node, management satellite directly finds substitute node impaired node neighbour, is added a group of planes and works on;
For the situation that early warning plane node is impaired, management satellite gives out information to other early warning plane nodes of its subordinate, regain the key of this impaired node and other nodes sharing, and to this early warning plane the unmanned plane node managed in a group of planes assign instruction, order them add neighbour's group of planes or make a return voyage.
The present invention has the following advantages:
1. the present invention introduces the communication mode as relaying such as early warning plane and satellite in multiple no-manned plane communication, makes communication link more stable, reliable;
2. the present invention can prevent false communication request and response setting up the interaction protocol used in communication link, stop malice aircraft node illegally distorting link information, and data are all encrypted by the key distributed respectively by ground control station during system initialization, ensure the safety of message;
3. the present invention is to equipment fault or the malfunctioning countermeasure taking correspondence, the treatment mechanism that when making the situations such as aircraft inefficacy or link congestion occur, meeting trigger link upgrades, get around malfunctioning node, again initiate link to search, set up new link, improve the ability of system reply emergency, enhance the specific demands such as the survivability of system;
4. the present invention utilize group of planes system good solve the communication issue existed in unmanned plane collaborative work, both the communication of centralized system for Network Central Node and the requirement of computing capability had been avoided, solve again because unmanned plane core carries comparatively light when distributed frame is applied, the problem that unit computing capability is limited;
Accompanying drawing explanation
Fig. 1 is the scene structure figure that the present invention uses;
Fig. 2 is realization flow figure of the present invention;
Fig. 3 is the sub-process figure that link of the present invention is searched.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
The scene structure figure that the present invention uses as shown in Figure 1, includes unmanned plane, early warning plane, satellite, ground station's 4 modules altogether:
Unmanned plane is the entity performing specific tasks, and its concrete application comprises control and scouts, monitors, performs search-and-rescue work, as communication repeating etc.;
Early warning probability forms a group of planes with some unmanned planes, as the elementary cell of executing the task based on a group of planes, unmanned plane can arbitrarily add or leave a certain group of planes early warning plane and be in charge of unmanned plane in a group of planes as the Centroid of a group of planes, as the unmanned plane of relay node services in a group of planes, safety chain can be set up between a group of planes simultaneously;
Satellite mainly provides for the grouping management of a group of planes, key management and overlength distance relay services, carries out relevant treatment etc. when its function comprises a registration management group of planes, link failure;
Shi Gao command centre of ground station, can be given an order to the node in system by number of ways, commands, issues the task of unmanned plane or make it add/leave certain group of planes and carry out collaborative work;
The demand that the present invention is transmitted according to Unmanned Aerial Vehicle Data effectively utilizes satellite, early warning plane manages unmanned plane node, to its restructuring carrying out dynamic adjustments and necessity with the connectedness of Logistics networks and fail safe, in addition when ground control centre fault or malfunctioning time, the node in network is also needed to possess certain self-organizing self-adjusting ability, to tackle emergency, meet the special requirements such as survivability.
With reference to Fig. 2, what the present invention realized comprises 4 execution phases, is system initialization respectively, link is searched, path stores, troubleshooting, specifically describe as follows:
First stage: system initialization.
Command centre is limit as highest weight by 1.1 ground stations, is satellite by up link, is distributed respective key between early warning plane and unmanned plane:
Ground station distributes respective key K G between each satellite G
ag
b(a, b ∈ [1, n
g]), wherein n
grepresent the quantity of satellite, when this key is used for setting up satellite link, ensure communication security;
Ground station distributes respective key K G between each satellite G and each early warning plane P
ap
i(i ∈ [1, n
p]), n
prepresent the quantity of early warning plane, this double secret key is used for verifying the legitimacy of pre-early warning plane when registering a group of planes;
Ground station distributes key K U between each unmanned plane U between two
xu
y(x, y ∈ [1, n
u]), n
urepresent the quantity of unmanned plane, this double secret key is used for link and searches and protect information security;
Ground station also distributes respective key K P between each unmanned plane U and each early warning plane P
iu
x, this key is used for verifying its legitimacy when unmanned plane adds a group of planes;
Ground station finally also distributes a public keys K
c, message encryption when searching for link;
1.2 composition group of planes:
Early warning plane periodically carries out search registration operation to the unmanned plane in its coverage, namely asks for the self information of encryption to unmanned plane, is then decrypted the message received, verifies;
Under this unmanned plane being registered to self group of planes after being verified, early warning plane is each unmanned plane distributed key respectively in a group of planes, and early warning plane informs each unmanned plane Self address in a group of planes simultaneously, for receiving the communication request of unmanned plane;
1.3 determine to manage satellite:
When early warning probability to enter the overlay area of certain satellite with a group of planes, early warning plane provides self-encryption information to this satellite, and satellite is decrypted checking message, ask for this group of planes information after certification, serves as the management satellite of this group of planes.
Second stage: link is searched.
Assuming that at sheet [T cycle time
t, T
t+1] interior satellite cover under each group of planes relative position remain unchanged, often through sheet [T cycle time
t, T
t+1], unmanned plane is at [T
t, T
t+1] first time communication in the time interval needs execution link to search.
With reference to Fig. 3, the link of this step is searched as follows:
(2a) source unmanned plane node U
xto the early warning plane P of this group of planes of management
isend communication request, early warning plane searches its destination node U after receiving request
ywhether in a current group of planes, if at a same group of planes, then perform (2b), otherwise, then perform (2c);
(2b) source unmanned plane node U
xthe early warning plane P of a place group of planes
isearch rear discovery destination node U
yat the group of planes oneself managed, directly set up U
x→ P
i→ U
ylink, and pass through U
xwith P
ikey K P
iu
xand U
ywith P
ikey K P
iu
yensure the communication security of this link;
(2c) source unmanned plane node U
xtransmission route querying is divided into groups, by early warning plane P
ito its neighbour's group of planes broadcast, start to find destination node U
yroute, this is grouped as follows:
P
i→[IDU
xU
y,ADS
Ux,ADS
Uy,[IDU
xU
y,ADS
Ux,ADS
Uy]KU
xU
y]K
c
This grouping comprises two groups of message: one group is [IDU
xu
y, ADS
ux, ADS
uy], it uses source unmanned plane node U
xwith object unmanned plane node U
ysymmetric key KU
xu
yencryption, another group is [IDU
xu
y, ADS
ux, ADS
uy], re-use public keys K after these two groups of message connect
ccarry out entirety encryption, wherein, IDU
xu
yfor route querying mark, ADS
uxunmanned plane address of node, source, ADS
uyfor the purpose of unmanned plane address of node;
(2d) link interior joint receive route querying grouping after operation:
During each execution route querying, equal monotone increasing route querying mark IDU
xu
yvalue, to mark its freshness, other early warning plane node is required to be this early warning plane and stores up-to-date route querying mark.
Be forwarded back to source early warning plane node to make to receive response message, need trip node recorded thereon with the reverse path set up to source early warning plane node after certain early warning plane node receives route querying message and use the shared key K of all early warning planes
cgrouping is searched in deciphering, utilizes from source unmanned plane node U
xroute querying grouping in extract route querying mark IDU
xu
y, to verify the freshness that this route querying is divided into groups: if this node once these data processed, then abandon this grouping, otherwise this node needs packet content to continue to forward.
Such as: suppose early warning plane node P
nfor receiving early warning plane P
ithe neighbour of route querying information broadcast, then P
nshared key K can be used
cdecrypt first message grouping [IDU
xu
y, ADS
ux, ADS
uy], if find destination node U through searching
ynot in the middle of the group of planes oneself managed, then P
ncontinue checking route querying mark IDU
xu
yfreshness, judge whether once to process this route querying grouping, if so, then directly abandon, otherwise, record early warning plane P
nfor its precursor, continue to forward and divide into groups to P as follows
nother neighbours:
P
n→[IDU
xU
y,ADS
Ux,ADS
Uy,[IDU
xU
y,ADS
Ux,ADS
Uy]KU
xU
y]K
c；
(2e) each early warning plane node on path all repeats step (2d), as certain early warning plane node P
jafter receiving route querying message, first use shared key K
cdecipher second group of message content; If find object unmanned plane node U through searching
yin a self-administered group of planes, then give this unmanned plane node by route querying forwarding of packets; This unmanned plane node U
yuse key K U upon receipt
xu
ydecipher first group of message content, and checking that two groups of message are compared:
If first group of message [IDU
xu
y, ADS
ux, ADS
uy] KU
xu
yfind and second group of message [IDU after deciphering
xu
y, ADS
ux, ADS
uy] consistent, then along the reverse path clean culture acknowledgment packet in source, set up link between machine to communicate, if first group of message and second group of message content are not inconsistent, then illustrate in path and have aircraft nodes break down or be captured and initiated to internal attack the content of having distorted first message grouping, need to be reported to management satellite, and by management satellite notification source unmanned plane node U
xagain initiate route querying, be reported to ground station simultaneously and carry out troubleshooting;
(2f) source early warning plane node P
iif receive response message not yet for a long time, illustration purpose nodal point separation is too far away, and between a group of planes, link cannot be set up, and to need by satellite as communication repeating:
Early warning plane node P
isend authorization messages to source unmanned plane node U
x, getting, it directly communicates with the management satellite of this group of planes;
Source unmanned plane node U
xget in touch with management satellite with direct, satellite receives source unmanned plane node U
xcommunication request after, the satellite adjacent with him is got in touch, and searches destination node U
ythe group at place, because the coverage of satellite is very wide, only needs once the destination node U jumped or can look in group
ythe group at place;
Suppose source unmanned plane node U
xthe management and group satellite at place is G
a, hypothesis goal node U
ythe management satellite of the group at place is G
b, then U is set up
x→ G
a→ G
b→ U
ysuch satellite link, by U
xwith U
yshared key KU
xu
yensure the safety of communication link.
Phase III: path stores.
From sheet [T cycle time
t, T
t+1] initial, from sheet [T cycle time
t, T
t+1] initial, the secure communications links that source unmanned plane is set up by step (2) arrives destination node, and is deposited in routing table by this communication link, and this path is the optimal path arriving destination node in current system.
Here, optimal path refers to the path that communication spended time is minimum.When link stress is little, be optimum to the path that destination node is the shortest, but quite different when link is busy, step 2 carry out link search time, as destination node U
yfirst time receives source node U
xroute querying message after parse second group of message by both shared keys and confirm to conform to first group time, immediately along the reverse path clean culture acknowledgment packet in source, and if receive again afterwards and for the first time receive source node U
xdirectly abandon when data are divided into groups in the route querying of broadcast identical.Source node U is ensure that with this
xthe destination node U received
ythe path returned is current the shortest optimal path consuming time.Because other slightly many paths consuming time are dropped.
If at this cycle [T
t, T
t+1] between do not have the situation of node failure or link congestion to occur, then between each group of planes, correlation remains unchanged, routing table also remains unchanged, if but there occurs the situation such as link congestion or node failure in this cycle time in sheet, then need to carry out routing update process, re-start route querying by source node, set up new routing table, until the next cycle, then carry out new route querying process.
Fourth stage: troubleshooting.
When on certain active link because node motion goes out its logical place, to be attacked or faults itself causes link to damage, or due to congested cause Link State unavailable time, then send error reporting by its management satellite and notify ground control station, this error reporting encrypted by satellite specific key, and satellite makes respective handling according to damage situations simultaneously:
For the unmanned plane node damaged, management satellite is directly found idle node its neighbour and is added a group of planes, and the unmanned plane substituting damage works on;
Impaired for early warning plane node, needs to be given out information to its subordinate's early warning plane node by management satellite, regain the symmetric key of this node and other nodes sharing, and to its unmanned plane node managed in a group of planes assign instruction, make it add neighbour's group of planes or make a return voyage.
More than describing is only example of the present invention; do not form any limitation of the invention; obviously for those skilled in the art; after understanding content of the present invention and principle; all may when not deviating from the principle of the invention, structure; carry out the various correction in form and details and change, but these corrections based on inventive concept and change are within claims of the present invention.
Claims (2)
1., for setting up the method for secure communications links under multiple no-manned plane environment, comprise the steps:
(1) encryption key distribution:
Ground station is distribute respective key K G between each satellite G by up link
ag
b(a, b ∈ [1, N
g]), N
grepresent the quantity of satellite, for distributing respective key K G between each satellite and each early warning plane P
ap
i(i ∈ [1, N
p]), N
prepresent the quantity of early warning plane, for distributing key K U between two between unmanned plane
xu
y(x, y ∈ [1, N
u]), N
urepresent the quantity of unmanned plane, simultaneously for also to distribute respective key K P between unmanned plane U and early warning plane P
iu
x, and issue public keys K
c;
Early warning plane search unmanned plane around also registration forms a group of planes, and group of planes information is handed over to the management satellite in this region;
(2) link is searched
Assuming that at sheet [T cycle time
t, T
t+1] interior satellite cover under each group of planes relative position remain unchanged, unmanned plane is at [T
t, T
t+1] first time communication in the time interval needs the path finding destination node, sets up the communication link of safety;
(3) path stores
From sheet [T cycle time
t, T
t+1] initial, the secure communications links that source unmanned plane is set up by step (2) arrives destination node, and is deposited in routing table by this communication link, if at this cycle [T
t, T
t+1] within there is no the situation of node failure or link congestion, then routing table remains unchanged, otherwise, routing table is upgraded, re-executes step (2) by source unmanned plane node, set up new routing table, until the next cycle;
(4) troubleshooting
When the link set up by (2) occurs that node damages, or due to congested cause Link State disabled situation time, send Trouble Report by management satellite ground station, while make respective handling according to damage situations:
For the impaired situation of unmanned plane node, management satellite directly finds substitute node impaired node neighbour, is added a group of planes and works on;
For the situation that early warning plane node is impaired, management satellite gives out information to other early warning plane nodes of its subordinate, regain the key of this impaired node and other nodes sharing, and to this early warning plane the unmanned plane node managed in a group of planes assign instruction, order them add neighbour's group of planes or make a return voyage.
2. the method for setting up secure communications links under multiple no-manned plane environment according to claim 1, is characterized in that, finds the path of destination node, carry out as follows in step (2):
(2a) source unmanned plane node U
xto the early warning plane P of this group of planes of management
isend communication request, early warning plane searches its destination node U after receiving request
ywhether in a current group of planes, if at a same group of planes, then perform (2b), otherwise, then perform (2c);
(2b) managed source unmanned plane node U
xthe early warning plane of a place group of planes is P
i, namely set up U
x→ P
i→ U
ylink, and pass through U
xwith P
ikey K P
iu
xand U
ywith P
ikey K P
iu
yensure the communication security of this link;
(2c) source unmanned plane node U
xtransmission route querying is divided into groups, by early warning plane P
ito its neighbour's group of planes broadcast, start to find destination node U
yroute, this is grouped as follows:
P
i→[IDU
xU
y,ADS
Ux,ADS
Uy,[IDU
xU
y,ADS
Ux,ADS
Uy]KU
xU
y]K
c
This grouping comprises two groups of message: one group is [IDU
xu
y, ADS
ux, ADS
uy], it uses source unmanned plane node U
xwith object unmanned plane node U
ysymmetric key KU
xu
yencryption, another group is [IDU
xu
y, ADS
ux, ADS
uy], re-use public keys K after these two groups of message connect
ccarry out entirety encryption, wherein, IDU
xu
yfor route querying mark, ADS
uxunmanned plane address of node, source, ADS
uyfor the purpose of unmanned plane address of node;
(2d) other early warning plane nodes receive above-mentioned search grouping after use public keys K
cdeciphering, searches and judges destination node U
ywhether in a current group of planes, if so, then message is transmitted to this unmanned plane node; Otherwise, extract route querying mark IDU
xu
ythis grouping is verified, judges whether this once processed these data, if so, then this grouping was abandoned, otherwise just continue to forward, and the early warning plane node that record sends grouping is its precursor, to ensure that response message can beam back source node;
(2e) object unmanned plane node U
yafter receiving this grouping, use key K U
xu
ydecipher first group of message content, verify that whether two groups of message are consistent, if so, then along reverse path response, set up link between machine and communicate; If be not inconsistent, illustrate in path and have nodes break down or be captured and initiated to internal attack, distorted the content of first message grouping, by U
ybe reported to management satellite, and by management satellite notification source unmanned plane node U
xagain initiate route querying, be reported to ground control station simultaneously and carry out malfunction elimination;
(2f) source early warning plane node P
iif receive response message not yet for a long time, then will manage satellite as communication repeating, set up U
x→ G
a→ G
b→ U
ysatellite link communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828018.5A CN105491564B (en) | 2015-11-25 | 2015-11-25 | Method for establishing secure communications links under multiple no-manned plane environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828018.5A CN105491564B (en) | 2015-11-25 | 2015-11-25 | Method for establishing secure communications links under multiple no-manned plane environment |
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| Publication Number | Publication Date |
|---|---|
| CN105491564A true CN105491564A (en) | 2016-04-13 |
| CN105491564B CN105491564B (en) | 2019-03-01 |
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