Drone GPS spoofing (GNSS dag) yog cov txheej txheem tiv thaiv uas siv spoofed satellite navigation signals kom yuam kev drones rau hauv kev tsis ncaj ncees rau lawv tus kheej txoj haujlwm, ceev, thiab sijhawm. Qhov no tso cai rau lub hom phiaj cuam tshuam, yuam kev tsaws, lossis nqa lub davhlau. Piv nrog rau cov jamming ntshiab, nws yog qhov tseeb dua thiab muaj kev puas tsuaj tsawg dua.
I. Cov ntsiab cai tseem ceeb (Lwm yam yooj yim hauv ib kab lus) Satellite signals (GPS L1 / BeiDou B1, thiab lwm yam) taug kev los ntawm qhov chaw, thaum lub teeb liab hauv av tsis tshua muaj zog (kwv yees -130dBm). Spoofing li kis tau zoo dua (8-10dB siab dua) navigation signals nrog kev ua haujlwm tsis raug. Lub drone's receiver nyiam xauv rau lub teeb liab muaj zog, yog li ua qhov tsis tseeb rau qhov tseeb.
II. Ob txoj hauv kev tseem ceeb tshaj plaws
1. Relay-Raws li Spoofing (Yooj yim, Yooj yim rau siv)
Txheej txheem: Tau txais cov phiajcim satellite tiag tiag → Ncua sijhawm / Theem hloov kho → Amplify thiab Relay
Nta: Tsis tas yuav tawg tus lej cuav; siv lub teeb liab ncua mus tamper nrog txoj hauj lwm; haum rau kev xa tawm sai thiab luv luv - mus rau - kev dag ntxias nruab nrab.
Muaj feem xyuam rau: Handheld / tsheb -mounted countermeasures phom, xa mus ib ntus
2. Generative Spoofing (precise, Controllable)
Txheej txheem: Tiag -lub sij hawm simulation ntawm satellite ephemeris, fake codes, thiab cov lus → Tsim tag nrho cov tsis tseeb navigation signals
Nta: Tau precisely tswj lub drone txoj kev; txhawb ntau-satellite synchronization thiab dynamic txoj kev taw qhia; muaj txiaj ntsig zoo dua tawm tsam cov tshiab tiv thaiv -spoofing drones.
Muaj feem xyuam rau: Cov chaw ruaj khov, siab - kawg tiv thaiv -drone systems
III. Hom Kev Deception Strategies (Practical Application)
Txoj hauj lwm Offset Deception: Nruam xa "offset coordinates" kom maj mam deviate lub drone los ntawm nws txoj kev ya davhlau.
Tsis yog-Fly Zone Projection: Forge tsis muaj-fly zone signals to trigger the drone's automatic return/forced landing.
Precision Encirclement: Qhia lub drone mus rau thaj chaw nyab xeeb (xws li thaj chaw qhib).
Ceev / Sijhawm Deception: Tamper nrog ceev / sijhawm. Cov ntaub ntawv sijhawm sijhawm, cuam tshuam nrog Drone Obstacle Avoidance thiab Kev Npaj Dav Hlau
IV. Cov khoom sib xyaw thiab cov ntsiab lus tseem ceeb
Core Modules: Lub Hwj Chim Tau Txais, Spoofing Signal Generator, Fais Fab Amplifier, GNSS Kav hlau txais xov (Helical / Omnidirectional)
Cov Lus Qhia Tseem Ceeb: GPS L1 (1575.42MHz), BeiDou B1, GLONASS L1, Galileo E1
Lub Hwj Chim Loj: Kev xa hluav taws xob feem ntau ** Tsawg dua lossis sib npaug rau 10dBm (10mW) **, ua haujlwm tau zoo 500-1000 meters
Lub Sijhawm Zoo: Tsawg dua lossis sib npaug li 2 vib nas this rau cov qauv zoo tib yam; Tsawg dua los yog sib npaug li 10 vib nas this rau kev tiv thaiv- qauv spoofing xws li DJI Air3/mini4 Pro