How does FHSS work on the drone wireless video transmitter and receiver?
FHSS is an automatic frequency modulation technology. We widely used FHSS in wireless video data transmission of drones. Because the drone’s wireless link is often subject to signal interference.
Ma kēia wikiō, this frequency point shows the current signal strength.
ka 1365 we see is the current signal working frequency point of our wireless transmission equipment.
Why does this frequency go here?
Because there are other signals on the right that are interfering. It will run automatically.
If the signal receives interference again, it runs away again, choosing the frequency with the least interference.
This process is meant to avoid interference. We also call it the FHSS function.
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ʻO ka loulou ʻikepili wikiō uwea Drone mesh 150-200km ka lōʻihi o ke kikowaena kikowaena ad hoc transceiver
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Drone Link no ka lōʻihi o ka wikiō ʻikepili Radio Telemetry ka hoʻouna ʻole ʻia ma waena o UAV a me ke kahua hoʻokele honua
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22km ikepili wikiō uea ʻole RC mana loulou no ka ip ethernet pahupaʻiwikiō a me ka mea hoʻokipa fhss Vcan1806
Q1: What is the FHSS Frequency-hopping spread spectrum?
A1: ʻO ke alapine hoʻolaha hoʻolaha (FHSS) is a method of transmitting radio signals that involves rapidly changing the carrier frequency among a wide range of frequencies.
FHSS will occur automatically on both the transmitter and receiver at the same time. FHSS is used to prevent eavesdropping and interference on the long-range wireless video transmitter and receiver. When the current working frequency is jammed or interfered with, the transmitter and receiver disconnect and hop to the next available frequency to reconnect.
Q2: Why do you need the FHSS function?
A2:
1. Because the signal hops to a different frequency band, FHSS signals are highly resistant to narrow-band interference.
2. If the frequency-hopping pattern is unknown, signals are difficult to intercept.
3. Jamming is also difficult if the pattern is unknown; if the spreading sequence is unknown, the signal can only be jammed for a single hopping period.
4. With minimal mutual interference, FHSS transmissions can share a frequency band with many types of conventional transmissions. FHSS signals interfere in narrow-band communications and vice versa.
Q3: How to set the FHSS at your wireless video data transmitter and receiver?
A3: At the web manager UI, please choose the advance page, you can see the above picture.
https://i0.wp.com/ivcan.com/wp-content/uploads/2022/02/UI-Advance.webp
Q4: 7 tips you should know before you choose a wireless video transmitter and receiver with FHSS function.
A4:
1. TX900B-2W supports the frequency range is 1420~1530MHz, a aia he 110Mb bandwidth e hoʻohana ai.
2. Hiki i ka mea kūʻai ke hoʻonohonoho i ka bandwidth hana e like me 1.4M / 3M / 5M / 10M / 20MHz (Eia naʻe, 1.4M/3MHz may not be suited for video transmitting). A laila hiki iā TX900B-2W ke hana i loko ʻano FHSS (ʻO ke alapine hoʻolaha hoʻolaha) and the system will automatically select the central working frequency and may do frequency hopping (ma waena o 1420 ~ 1530MHz) i kāna hana ʻana.
3. Hiki i nā mea kūʻai ke hoʻolālā e hoʻohana i nā ala alapine i ka 1420 ~ 1530MHz holoʻokoʻa a hoʻonohonoho i ka hāmeʻa e hana i nā alapine paʻa pū kekahi..
4. TX900B-2W supports the longest distance at 22km.
Koe wale no ka laulā alapine i kākoʻo ʻia a me ka mamao loa, ka helehelena kino, mau ', UI, hana, a laila, ua like ka TX900B-2W me ka TX900B-15km-2W i kēia manawa.
5. TX900B-2W only support a frequency range is 1420~1530MHz, ʻAʻole ia e kākoʻo i ka 800MHz a me 2.4GHz i ka laina alapine.
6. ʻElua mau mana, TX900B-2W-15km, a me TX900B-2W-22km.
7. As the TX900B-2W frequency range is 110Mb, no laila inā ʻoe e hoʻonohonoho i ka bandwidth hana e like me 10Mb, a laila e loaʻa iā ʻoe 11 kuhikuhi i ka lele.
Q5: What is the working principle of your FHSS?
Our wireless video transceiver adopts intelligent frequency selection-interference avoidance.
Intelligent frequency selection (interference avoidance) technology is a new anti-interference technology, which can effectively avoid interference and maximize the reliability and stability of wireless transmission.
The key to our unique intelligent frequency selection (interference avoidance) technology lies in the three major processes of interference detection, decision-making, and switching execution. Interference detection refers to real-time detection of interference and background noise at each frequency point during normal communication, so as to provide basic support for decision-making. The decision-making is completed independently by each node, and the optimal frequency is selected based on the criterion of optimizing its own receiving performance. The point is used as the receiving frequency point; the switching execution occurs after the decision selects a new optimal frequency point, and the switching process will not cause data loss, ensuring stable and continuous data transmission.
Our unique intelligent frequency selection (disturbance avoidance) technology enables each node to independently and dynamically select different optimal frequency points for different frequency networking, so as to optimize the overall network performance and effectively avoid interference.
E ʻoluʻolu e nānā i ke kiʻi ma lalo, the blue area is the effective signal, a the red line is interference.
Q6: Does your FPV VTX support the FHSS frequency automatic jumping function to avoid interference?
FPV VTX is a one-way transmission and cannot support the FHSS frequency automatic hopping function.
FPV VTX is a one-way transmission, which can transmit the video from the aircraft to the ground receiver through the transmitter.
FHSS function, when the user finds that the signal sensitivity is declining or encounters an obstacle, it will notify the transmitter and receiver to modify the frequency at the same time and find a frequency with the least interference for transmission. If only the receiver modifies the frequency without controlling the transmitter to modify the same frequency, the frequency of the transmitter and receiver will be inconsistent and the transmission will be interrupted.
Because of the above requirement of notifying the transmitter to modify the frequency, the FHSS function needs to be based on a two-way transmission system.
Or your FPV VTX can support modifying the frequency function through the serial port. When you need to modify the frequency, the operator sends a preset serial port command from the receiver to the serial port of the transmitter. After receiving this command notification, the transmitter automatically changes to the next frequency point.
This is equivalent to your wireless transmission equipment, which has both a one-way video transmission function and a two-way data transmission function, which is equivalent to your current wireless control system. So whether it supports the serial port to modify the frequency of the transmitter depends on whether your current device supports it.
Our models below support such functionality.
Vcan1776 Vcan 1886
Q: Do you have a video data link as per the below requirement?
The required distance is 50 kilomita, me ka ʻenehana hopping frequency (jumping over 1,000 times in one second), ideally above 6Ghz (others can be considered, the most important thing is frequency hopping technology), and it is also necessary to transmit data, wikiō, and protect the remote control channel, preferably A set of data links (lēkio leo + pa alima + kukuna) using frequency hopping technology (FHSS)
iVcan Reply: ʻAʻole, The frequency is only 1.4G, the working frequency for 6Ghz needs custom development.
Q: Do you have any optional model to support the FHSS Frequency-hopping spread spectrum?
In the below picture, you can see that there are 12 points frequency ready for FHSS.
Real-time interference detection function
The products that support FHSS
Drone Video Transmitter support FHSS
Radio Telemetry support FHSS
wikiō hoʻāʻo hou loa no ka drone Long-range Wirless Video Transmitter and Receiver
2W PA 27KM ʻOiaʻiʻo hoʻāʻo mai luna mauna a i kai Line-of-Sight
Mea Hou Loa 110ei wikiō hoʻāʻo no ka drone Long-range Wirless Video Transmitter a Receiver
NLOS mea hoʻouna wikiō uea a me ka mea hoʻokipa wikiō hoʻāʻo i ke kūkulu ʻana i ka hoʻokiʻekiʻe i loko o ka laina ʻole o ka ʻike
65 Lele maoli ʻo KM drone UAV i ka hoʻāʻo ʻana i ka hoʻoili wikiō uila
65 Lele maoli ʻo KM drone UAV i ka hoʻāʻo ʻana i ka hoʻoili wikiō uila
1.5km no ka honua NLOS, 10-20-30km LOS ea i ka honua ueaʻole wikiō transmitter lawe lawe
COFDM-912T NLOS (ole-laina o ka ike) 1.5km hoao maoli ma ke kulanakauhale, hale hale, laau a me na alanui
UI Hoʻokele Pūnaewele Pūnaewele no ka UAV ka hoʻouna ʻana i ka loulou ʻikepili wikiō uila uila e ka pahu pahu IP Net
ʻO ka mea hoʻolele wikiō uila ʻole CVBS RCA 720P ʻoi loa + 1080Kākoʻo P Loaʻa 128 hoʻopunipuni
COFDM-912T E ho'āʻo maoli i ke kaiapuni kūlanakauhale paʻakikī, transmitter ma ke kaa, mea hoʻokipa ma ka hale
He kōkua nui ka mea hoʻolele wikiō ʻole ʻole a me ka pale liʻiliʻi i ka laka ikaika hōʻailona
ʻO ka mea hoʻolele wikiō uea ʻole o OFDM no nā kiʻi paʻi kiʻi IP maʻalahi ka lōʻihi o ka hoʻouna ʻana i ka pūnaewele ʻakomi
EYI Distance
Kaʻina hoʻomalu lele
Mea hookomo wikiō
ʻAno hoʻouna ʻole ʻole
Keakea a me ka Makana
Hoʻopili a hoʻokaʻawale
Ka lawe lawe lima
Kuhikuhi ʻIkepili
kukuna
Nā nīnau nīnau e pili ana i ka mea hoʻouna wikiō a me ka mea loaʻa
Loaʻa i kā mākou mea hoʻolele wikiō uea i kēia mau ʻano o ka hoʻokomo wikiō: HDMI 1080P a me 4K HDMI, CVBS composite, SDI, AHD, IP Ethernet, BNC, a i ʻole e haʻi mai iā mākou i ke ʻano āu e pono ai, e hoʻololi ko mākou ʻenekini e hoʻokō i kāu koi.
Hiki ke hoʻololi ʻia kā mākou mamao hoʻouna ma o ka hoʻohui ʻana i nā mana amplifier. I kēia manawa, ʻo nā mea nui 15ei, 30ei, 50ei, 80ei, 100ei , a me 150 km, e hilinaʻi ana i nā pono o nā mea kūʻai.
ʻoia, ʻo nā mamao hoʻouna i helu ʻia ma luna nei i loko LOS ka laulā laina-o-ʻike. Inā he mau pilikia ma waena o ka mea hoʻouna a me ka mea hoʻokipa, NLOS (ka laina-o-ka ike ole), ua emi loa ka mamao o ka lawe ana, 1km a i ʻole 2km wale nō, e pili ana i ka nui o nā mea pale waena a me ke kaiapuni uea ʻole kūloko.
Hoʻokahi ala ʻo ia hoʻi, Hiki iā mākou ke hoʻouna a hoʻoiho i ka wikiō a i ʻole ka ʻikepili mai ka mea hoʻouna wikiō uea i ka mea hoʻokipa ma kahi ʻaoʻao, a ʻaʻole hiki iā mākou ke hoʻouka i ka wikiō a i ʻole ka ʻikepili mai ka mea hoʻokipa i ka mea hoʻouna. Kapa ʻia kēia ʻano he simplex.
ʻAoʻao ʻelua ʻo ia hoʻi, ʻaʻole hiki iā mākou ke hoʻoiho i ka wikiō a i ʻole ka ʻikepili mai kā mākou mea hoʻouna uila i ka mea hoʻokipa, akā hiki iā mākou ke hoʻouka i ka wikiō a i ʻole ka ʻikepili mai ka mea hoʻokipa i ka transmitter. He kūpono loa kēia no ka hana ʻana i nā drones. ʻAʻole hiki iā ʻoe ke ʻike wale i ka wikiō maoli i lawe ʻia mai ka drone, akā e hoʻouka pū i ke kauoha e hoʻomalu i ka drone a i ʻole ke kauoha e hoʻomalu i ke kāmela PTZ e hoʻoponopono i ke kihi i ka transmitter.. Hiki i kēia ke hana i ka manawa like. Ua kapa ʻia kēia ʻano he half-dulpex a i ʻole full-duplex.
E ʻoluʻolu e nānā i nā kikoʻī ma ka loulou ma lalo nei. https://ivcan.com/request-a-quote-of-wireless-video-transmission/#simplex
Kākoʻo ka hapa nui o nā mea hoʻolele wikiō uila AES128 a i ʻole AES256 bit encryption and decryption, ma muli o ke ʻano hoʻohālike āu e koho ai. E ʻoluʻolu e kelepona mai iā mākou e hōʻoia.
ʻO nā alapine o ka mea hoʻolele wikiō uila a me ka mea hoʻokipa wikiō uea hiki ke hoʻololi. Pono nā mea hoʻohana e kūʻai i nā papa hoʻonohonoho ʻokoʻa.
Eia naʻe, ke noʻonoʻo nei ua hoʻopaʻa ʻia ka mana amplifier a me ka antenna i loko o kahi kikoʻī i ka wā i hoʻouna ʻia ai nā huahana.. Inā hoʻololi ka mea hoʻohana i ke alapine o ka mea hoʻouna, ka mea pili mea hoʻonui mana, Pono e hoʻololi ʻia ka antenna transmitter a me ka antena hoʻokipa i ka alapine like, a pono e hoʻomākaukau kēia mau mea hoʻohana. Inā 'aʻole, e ʻokoʻa ka alapine o ka mea hoʻolele wikiō uea mai ka alapine o ka antenna, paʻakikī i ka hoʻokipa ʻana. No laila, e ʻoluʻolu e hoʻomaopopo i ke alapine kūpono āu e pono ai ma mua o ke kau ʻana i kahi kauoha.
Inā no ka palekana a i ʻole ka hūnā, hiki iā ʻoe hoʻohana i ka hoʻopunipuni a me ka decryption nā hana o ka transmitter a me ka mea hoʻokipa, ka mea hiki ke hōʻoia i kāu hoʻoili wikiō pilikino. .
ʻAe, kā mākou huahana a pau hiki ke hoʻopilikino ʻia nā ʻāpana e like me ka makemake o ka mea kūʻai. Inā he noi kūikawā kāu, e ʻoluʻolu e haʻi mai iā mākou ma o ka loulou ma lalo nei.
https://ivcan.com/request-a-quote-of-wireless-video-transmission/
- E hoʻololi i kahi o ka mea hoʻokipa e pale i ka hoʻopilikia kūloko mai nā kaiapuni magnetic ikaika.
- E hōʻoia i ka paʻa ʻana o nā antenna ʻo ka mea hoʻouna a me ka mea hoʻokipa he kū pololei.
- E ʻoluʻolu e hoʻokiʻekiʻe i nā antenna o ka transmitter a me ka mea hoʻokipa i mālama i kekahi ʻokoʻa kiʻekiʻe.
- E ʻoluʻolu e nānā a puni e hōʻoia i kēlā ʻaʻohe pilikia ma waena o ka mea hoʻouna a me ka mea hoʻokipa.
- E hoʻololi i ka hoʻonohonoho o ka antena hookipa.
- Inā ʻaʻole pono, hoao ka hoʻoneʻe ʻana i ka mea hoʻokipa e kokoke i ke kūlana o ka mea hoʻouna e ʻike inā ua ʻoi aku ia ma mua o ka mamao o ka hoʻouna ʻole ʻole.
- A i ʻole e noʻonoʻo hoʻohui i kahi relay o ka hoʻouna ʻana ma waena o ka mea hoʻouna a me ka mea lawe.
- Pono e ki'eki'e ka antenna mai ka honua aku, no ka mea, e komo ka honua i ka hōʻailona i hoʻouna ʻia.
ʻoia, maopopo iā mākou he pipiʻi loa nā mea hoʻouna wikiō uila a me nā mea hoʻokipa. Ua mamao loa ʻoe mai ka hale hana Kina. a me ka manaʻolana ua kūpono nā waiwai i loaʻa iā ʻoe no ka hana maikaʻi loa.
Inā ʻoe e nānā kūikawā i kahi ʻāpana a i ʻole hana, hiki iā mākou ke lawe i kekahi mau wikiō hoʻāʻo e pili ana i nā hiʻohiʻona āu e makemake ai e ʻike, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou. ʻAʻole e hoʻouna pololei ʻia iā ʻoe me ka ʻole o kou ʻae ʻia.
No ka hoʻāʻo ʻana i ka lohi o ka mea hoʻolele wikiō uila a me ka mea hoʻokipa, pono mākou e hana i ʻelua hoʻokolohua.
ʻO ka mea mua, ʻo ia ka hoʻāʻo ʻana i ka lohi mai ka pahupaʻikiʻi a i ka hōʻike.
ʻO ka lua ka pahupaʻikiʻi, me ka hōʻike a me ka mea hoʻouna kiʻi uila uila a me ka lohi o ka mea hoʻokipa.
ʻO ka unuhi ʻana i nā hopena hōʻike ʻelua ʻo ia ka lohi maoli o ka mea hoʻouna wikiō uila a me ka mea hoʻokipa.
Ma ke ʻano he mea hoʻolaha wikiō uila HDMI lōʻihi lōʻihi a me ka mea hoʻokipa a me ka mea hana ma Kina Shenzhen, hana mākou i ka mea hoʻouna wikiō uila maikaʻi loa a me ka mea hoʻokipa no nā makahiki he nui, a loaʻa iā mākou kahi inoa maikaʻi a me nā loiloi maikaʻi loa.
ʻO kekahi mau inoa kaulana o nā mea hoʻolele wikiō uila, e like me Blackmagic, Holyland mars 300 400mau, Accsoon cine maka 5g, RavenEye, ʻO Zhiyun, Inkee pahu pahu, actiontec, CVW SWIFT 800, dahua, iogear, Artek pat-225k, microlite, ale, teradec.
ʻO ka mea hoʻouna wikiō hoʻolaha wikiō maikaʻi loa a me ka mea hoʻokipa he nui nā noi, no 4K tv, Kāmeʻa palekana CCTV, pahupaʻi kiʻi kaʻa, ʻO ka pahu pahu pahu wikiō PTZ, pākaukau, kamepiula, kāmele sony, ʻōnaehana wikiō wikiō wifi, CANON DSLR, UAV drone, pc computer laptop, projector, ma-kaʻa, iPhone iPad, hoʻoheheʻe ola, Kāmeʻa haʻuki GoPro, raspberry pi, Xbox.
ʻO ka wikiō HD piha, Audio, loulou ʻikepili liʻiliʻi loa 1080P uila wikiō uila a me ka mea hoʻokipa he nui nā mea hoʻokomo a me nā mea hoʻopuka, e like me AV composite CVBS, HDMI, SDI, BNC, VGA, USB.
He 170-806Mhz ka mea hoʻouna wikiō uila uila TX RX, 1.2ghz, 2.4G, 5.8G, haʻahaʻa akā ʻaʻole ʻaʻole ka lōʻihi. I mea e kākoʻo ai i nā mamao lōʻihi, he 10w ka mana amplifier, 20watts, a hiki i ka 30W.
He aha ke kūʻai maikaʻi loa i ka mea hoʻouna wikiō uila FHD ma ke kumu kūʻai? Pono ia e noʻonoʻo i kāu koi kikoʻī, koho pono, ʻaʻole pipiʻi, ina he kanalua kou, e 'oluʻolu hooko i ka noi i kahi ʻōlelo ʻano, e hāʻawi ko mākou ʻenekini iā ʻoe i kahi hopena.
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