ʻIkepili o nā ʻano hoʻopaʻa ʻana Laser: Nā Kuʻuna ʻenehana a me nā noi o ka Precision Repetition Frequency Code, Variable Pulse Interval Code, a me PCM Code

Ke ulu nui nei ka ʻenehana laser i nā kula e like me ka ranging, kamaʻilio, hoʻokele, a me ka ʻike mamao, ʻo ka modulation a me ka hoʻopili ʻana i nā ʻano hōʻailona laser ua lilo i ʻokoʻa a maʻalahi hoʻi. No ka hoʻonui ʻana i ka mana anti-interference, ka pololei, a me ka maikaʻi o ka hoʻouna ʻana i ka ʻikepili, ua hoʻomohala nā ʻenekinia i nā ʻano hana hoʻopili like ʻole, me ka Precision Repetition Frequency (PRF) Code, Variable Pulse Interval Code, a me Pulse Code Modulation (PCM).

Hāʻawi kēia ʻatikala i kahi loiloi hohonu o kēia mau ʻano hoʻopili laser maʻamau e kōkua iā ʻoe e hoʻomaopopo i kā lākou mau loina hana, nā hiʻohiʻona ʻenehana, a me nā hiʻohiʻona noi.

1. Kuhikuhi ʻo Frequency Repetition (PRF Code)

①Kuʻuna ʻenehana
ʻO ka PRF code he ʻano hoʻopāpā e hoʻouna i nā hōʻailona pulse ma kahi alapine hoʻopaʻa hou (e laʻa, 10 kHz, 20 kHz). I nā ʻōnaehana laser ranging, ʻokoʻa kēlā me kēia pulse i hoʻihoʻi ʻia ma muli o kona alapine hoʻokuʻu pololei, i hoʻopaʻa ʻia e ka ʻōnaehana.

②Nā mea nui

Hoʻolālā maʻalahi a me ka uku hoʻokō haʻahaʻa

He kūpono no nā ana pōkole a me nā pahu hopu kiʻekiʻe

E maʻalahi e hoʻohui me nā ʻōnaehana uki uila maʻamau

ʻAʻole maikaʻi i nā kaiapuni paʻakikī a i ʻole nā ​​hiʻohiʻona multi-target ma muli o ka pilikia o“echo waiwai nui”keakea

③Nā hiʻohiʻona noiʻi
Laser rangefinders, hoʻokahi-kumu ana i ka mamao, ʻōnaehana nānā ʻoihana

2. Code Interval Pulse Variable.

①Kuʻuna ʻenehana
Mālama kēia ʻano hoʻopaʻa inoa i ka manawa ma waena o nā pulses laser e hana maʻamau a i ʻole pseudo-random (e laʻa, me ka hoʻohana ʻana i kahi mea hana pseudo-random sequence generator), ma mua o ka paʻa. Kōkua kēia randomness e hoʻokaʻawale i nā hōʻailona hoʻi a hōʻemi i ka hoʻopili multipath.

②Nā mea nui

ʻO ka mana anti-interference ikaika, kūpono no ka ʻike ʻana i ka pahuhopu i nā kaiapuni paʻakikī

Kāohi pono i nā leo ʻuhane

ʻOi aku ka paʻakikī decoding kiʻekiʻe, e koi ana i nā kaʻina hana ikaika

He kūpono no ke kiʻekiʻe kiʻekiʻe a me ka ʻike maka

③Nā hiʻohiʻona noiʻi
ʻO nā ʻōnaehana LiDAR, nā ʻōnaehana nānā ʻana i ka UAV/security, ka pūʻali koa laser a me nā ʻōnaehana ʻike maka

3. Hoʻololi i ka Pulse Code (PCM Code)

①Kuʻuna ʻenehana
ʻO ka PCM kahi ʻenehana modulation kikohoʻe kahi e hōʻike ʻia ai nā hōʻailona analog, helu ʻia, a hoʻopili ʻia i loko o ke ʻano binary. Ma nā ʻōnaehana kamaʻilio laser, hiki ke lawe ʻia ka ʻikepili PCM ma o nā pulses laser e hoʻokō i ka hoʻouna ʻike.

②Nā mea nui

ʻO ka hoʻoili paʻa a me ke kūpaʻa leo ikaika

Hiki ke hoʻouna i nā ʻano ʻike like ʻole, me ka leo, nā kauoha, a me ka ʻikepili kūlana

Pono ka hoʻonohonoho ʻana i ka uaki e hōʻoia i ka decoding kūpono i ka mea hoʻokipa

Ke koi nei i nā modulators a me nā demodulators kiʻekiʻe

③Nā hiʻohiʻona noiʻi
Nā hopena kamaʻilio laser (e laʻa, Free Space Optical communication system), laser remote control no nā missiles/spacecraft, hoʻihoʻi ʻikepili i nā ʻōnaehana telemetry laser

4. Ka hopena

E like me ka“lolo”o nā ʻōnaehana laser, hoʻoholo ka ʻenehana hoʻopili laser i ka lawe ʻia ʻana o ka ʻike a pehea ka hana pono o ka ʻōnaehana. Mai nā code PRF maʻamau a hiki i ka hoʻololi ʻana o ka PCM kiʻekiʻe, ua lilo ke koho a me ka hoʻolālā ʻana o nā hoʻolālā hoʻopili i ke kī i ka hoʻomaikaʻi ʻana i ka hana ʻōnaehana laser.

Ke koho ʻana i kahi ʻano hoʻopāpā kūpono e pono ai ka noʻonoʻo piha ʻana i ka hiʻohiʻona noiʻi, nā pae keakea, ka helu o nā pahuhopu, a me ka hoʻohana mana ʻōnaehana. No ka laʻana, inā ʻo ka pahuhopu ke kūkulu ʻana i kahi ʻōnaehana LiDAR no ka hoʻohālikelike ʻana i ke kūlanakauhale 3D, ʻoi aku ka maikaʻi o kahi code interval pulse variable me ka mana anti-jamming ikaika. No nā mea hana ana maʻalahi, hiki ke lawa i ka helu alapine e hana hou ai.