Kusanthula Mitundu ya Laser Encoding: Mfundo Zaukadaulo ndi Kugwiritsa Ntchito Precision Repetition Frequency Code, Variable Pulse Interval Code, ndi PCM Code

Pamene ukadaulo wa laser ukufalikira kwambiri m'magawo monga kusinthasintha, kulumikizana, kuyenda, ndi kuzindikira kutali, njira zosinthira ndi kulembera ma siginecha a laser nazonso zakhala zosiyanasiyana komanso zapamwamba. Pofuna kupititsa patsogolo luso loletsa kusokoneza, kulondola kwa kusinthasintha, komanso kugwiritsa ntchito bwino njira zotumizira deta, mainjiniya apanga njira zosiyanasiyana zolembera ma siginecha, kuphatikizapo Precision Repetition Frequency (PRF) Code, Variable Pulse Interval Code, ndi Pulse Code Modulation (PCM).

Nkhaniyi ikupereka kusanthula kwakuya kwa mitundu ya laser iyi yodziwika bwino kuti ikuthandizeni kumvetsetsa mfundo zake zogwirira ntchito, mawonekedwe ake, ndi zochitika za ntchito.

1. Khodi Yobwerezabwereza Molondola (Khodi ya PRF)

①Mfundo Zaukadaulo
Khodi ya PRF ndi njira yolembera mawu yomwe imatumiza zizindikiro za pulse pafupipafupi yokhazikika yobwerezabwereza (monga, 10 kHz, 20 kHz). Mu makina osinthira a laser, pulse iliyonse yobwezedwa imasiyanitsidwa kutengera pafupipafupi yake yolondola yotulutsa, yomwe imayendetsedwa mwamphamvu ndi makinawo.

②Zinthu Zofunika Kwambiri

Kapangidwe kosavuta komanso mtengo wotsika wogwiritsira ntchito

Yoyenera kuyeza kwa nthawi yochepa komanso zolinga zowunikira kwambiri

Zosavuta kufananiza ndi machitidwe achikhalidwe amagetsi amagetsi

Sizigwira ntchito bwino m'malo ovuta kapena m'malo okhala ndi zolinga zambiri chifukwa cha chiopsezo cha“mawu ofotokozera zinthu zambiri"kusokoneza

③Zochitika Zogwiritsira Ntchito
Zipangizo zoyezera mtunda pogwiritsa ntchito laser, zipangizo zoyezera mtunda zomwe zimagwiritsidwa ntchito pa cholinga chimodzi, makina owunikira mafakitale

2. Khodi Yosinthasintha ya Kugunda (Khodi Yosasinthika kapena Yosinthasintha ya Kugunda)

①Mfundo Zaukadaulo
Njira iyi yolembera mawu imalamulira nthawi yomwe ma laser pulses amasinthasintha kukhala osinthika kapena osinthika (monga kugwiritsa ntchito jenereta ya pseudo-random sequence), m'malo mokhazikika. Kusinthasintha kumeneku kumathandiza kusiyanitsa zizindikiro zobwerera ndikuchepetsa kusokoneza kwa multipath.

②Zinthu Zofunika Kwambiri

Mphamvu yolimbana ndi kusokoneza, yoyenera kuzindikira zolinga m'malo ovuta

Amaletsa bwino mawu a mizimu

Kuvuta kwambiri kwa decoding, komwe kumafuna ma processor amphamvu kwambiri

Yoyenera kudziwika bwino kwambiri komanso yolondola kwambiri

③Zochitika Zogwiritsira Ntchito
Machitidwe a LiDAR, machitidwe owunikira chitetezo cha counter-UAV/chitetezo, makina owunikira a laser yankhondo ndi makina ozindikiritsa omwe akuyang'aniridwa

3. Kusinthasintha kwa Ma Code a Kugunda (PCM Code)

①Mfundo Zaukadaulo
PCM ndi njira yosinthira ma digito pomwe ma signal a analog amasampulidwa, kuyesedwa, ndikulembedwa mu mawonekedwe a binary. Mu machitidwe olumikizirana ndi laser, deta ya PCM imatha kunyamulidwa kudzera mu laser pulses kuti ikwaniritse kutumiza chidziwitso.

②Zinthu Zofunika Kwambiri

Kutumiza kokhazikika komanso kukana phokoso mwamphamvu

Wokhoza kutumiza mitundu yosiyanasiyana ya chidziwitso, kuphatikizapo mawu, malamulo, ndi deta ya momwe zinthu zilili

Imafuna kulumikizana kwa wotchi kuti iwonetsetse kuti ikusintha bwino mawu pa wolandila

Amafuna ma modulators ndi ma demodulators ogwira ntchito bwino kwambiri

③Zochitika Zogwiritsira Ntchito
Malo olumikizirana ndi laser (monga, machitidwe olumikizirana a Free Space Optical), makina owongolera kutali a laser a ma droo/zombo zamlengalenga, kubweza deta mu makina olumikizirana ndi laser

4. Mapeto

Monga“ubongo"Pa makina a laser, ukadaulo wa laser encoding umatsimikiza momwe chidziwitso chimafalitsidwira komanso momwe makinawo amagwirira ntchito bwino. Kuyambira ma code oyambira a PRF mpaka PCM modulation yapamwamba, kusankha ndi kapangidwe ka njira zolembera ma encoding kwakhala chinsinsi chowongolera magwiridwe antchito a makina a laser.

Kusankha njira yoyenera yolembera mawu kumafuna kuganizira mozama za momwe ntchito ikuyendera, kuchuluka kwa kusokoneza, kuchuluka kwa zolinga, ndi mphamvu zomwe zimagwiritsidwa ntchito pamakina. Mwachitsanzo, ngati cholinga chake ndikupanga dongosolo la LiDAR la urban 3D modeling, khodi yosinthasintha ya pulse interval yokhala ndi mphamvu yolimbana ndi jamming ndiyo yabwino kwambiri. Pazida zosavuta zoyezera mtunda, khodi yobwerezabwereza yolondola ikhoza kukhala yokwanira.