1. ???????? ??????
???????? ???? ?????? ???? ?????????? ???????? ???????? ????? ???? ??????????? ?????????. ??????? ????? (0 ??, ?????, - 273.15 ℃) ????? ???????? ????? ???????? ?????????? ?????????????, ??? ???????? ???? ????????? ??????????? ????? ?????????? ????????????????.
???????? ?????? ????????? ??????????? ???????????? ???? ???????? ????? ???, 0.8μm ???? 50μm ?????? ????????????????, ??? ???? ????????????? ?????????? (0.4μm ???? 0.8μm).
??????? ???????? ????? ??????? ?????? ??????????
λ = c/f, ????? C ?????? ?????? 3.0 × 108 m/s ??? ????? the ?????? ??????????????.
?????????: ???? ?????? ???????? ????????? 4x1014Hz ~ 8x1014Hz ????? ????????.
2. ???????? ?????? - ???????? ?????
????? ???????????? ??????? ????? ??????? ???????? ??????????? ???????????????, ????????? ????? ??????????????? ???????? ??????????? ????? ?????????.
?????????, ??????? ??????????? ???????? ???????? "???????? ?????? ???????? ?????" ???? ?????????????.
????????????? - ????, ????? - ???? ????? ????
?????????? ????? - ???? ??????????? ??????????? ????? ??????? 8 ~ 14μm ?????.
3. ???????? ?????? ?????? ???????:
. ??????????? ??????: ????????? ???????? ??????????? ??????????? ???????? ???????? ???????? ?????????? ????? ????????????? ????????????.
. ??????????? ????????? ?????: ???????? ????????? ???? ???????? ?????? ??????????? ???????? ?????????? ??????????? ???????????? ????????????.
. ????????????? ??????: ???????????? ???????? ??????????? ?????????? ????????????.
. ???????? ???: ???????? ??????????? ???? ?????? ?????????? ??????????? ???????????? ????????????.
. ???????????: ??????????? ?????? ??????????????? ??????? ?????????? ????????? ???????????????? ???????????? ????????????.
4. ???????? ?????? (???????)
??????? - ??????????? (???????) ??????? (0.8μm ~ 1μm) ???? ?????? ????????? ???????????, ??? ????? ?????? ????????????? ??????????? ????, ????? ???????? ???????? ???? ?????? ???????????? ????????? ????? ???? ??????????? ???????????????;?
???? ?????????, ??????? ????? ?? ???????????????, ???????? ??????? ??????????? ???? ????? ???????? ???????? ?????? ???????? ?????????????????;
??????????????:?
???????? ?????????, ?????????? ????????? ???????? ??????? - ??????????? ??????? ????? ????????????, ???????? ???? ????, ????? ???? ????, ???? ?????? ?????? ?????????? ???????????????, ?????? ???????? ?????? ??????????? ????? ?????? ?????? ?????????? ????????????;?
?????? - ??????????? ?? ???????? ???????? ??????????? ??????????????????, ????????? ??? ???????????? ???? ???? ????????? ????????;
4. ?????? ???? ??????????? (???????????????)?
?????? ???? ??????????? (???????????????) ???? ??????? ????????? ????? ????? ????? ?? dark ??? ?????? ???????? ????? ??????????????????? ??????????? ??????? ?????????? ?????????????? ????? ??????????????;?
????? ???, ???? ????? ????????????? ????? ???????? ??????????????? ?????????? ????? ?????????????;?
SWIR ???? ????? ????????????????? ??????? ????????????? ???????;?
???? ????????????? ??????????????, ??????? ???????? 500 ???? 3000 ?????? ????????? ????? ????????. ??????? ???????? 500 ~ 3000 ????? ????????;?
??????????????:?
????, ????? ????? ????? ???? ???????? ????????????? ????????;?
??????, ???????? ????? ???????? ????????????? ??????? ????? ?????? ???????????? ????????;?
???????? ???????????? ???????? ????? ????? ?????? ?????????;?
??????? ???????????? ????????.
5. ???? ???? ??????????? (????????)?
??????????:?
High sensitivity and resolution: Cooled detector with low noise, thermal sensitivity (NETD) <20mK, and excellent detail resolution;?
Strong atmospheric penetration: MWIR has high transmittance in specific atmospheric windows (e.g., 3-5 μm), and is suitable for long-distance observation because it is less affected by interference from fog, smoke and soot.
??????
???? ???????? ??????: ??????? ????? ????? ??????? ?????????? ??????????? ???????????.
???? ??????????? ???: ????? ??????????? ?????????? ?????? ?????????, 100Hz ??????? ?????? ??????? ????????.
???????????:?
??????? ??????? ????? ??????????: ?????? ???????????????? ??????????? ?????, ??????? ????, ??????? ???????? ????????????? ?????????????, ???? ??????????? ????????? ?????? ???????? ????????? 5 - 10 ????? ?????????????.
????? ????? ????? ???????? ????: ????????? ?????????? ????? ????????, ???? ???????????, ????? ??????? -
????? ???????: ??????? ???????? ?????? ?????? ?????? ?????????? ?????????? ????????????? ????? ??????? ??????????????? ????? ???????????????????.
??????? ????????: ??????????? ?????????????? ????????????? (???., ??????????? ?????????? ?????? 10,000 ?????? ???) ????? ?????? ???????? ???? ???? ??????????????, ????????? ?????????? ?????????????.
??????????????:?
????? ??????, ???? ?????, ????? ????? ????? ???????? ???????????????;?
??????? ?????????????, ???????? ???????? ??????? ????? ??????????? (?????????).
6. ????? ???? ??????????? (?????????)?
??????????:?
?????????? ??????????, ????? ?????: ????????? ????? ?????, ??? ???????? ????, ???? ?????, ????? ???, ????????? ????.
????????? ?????? ????????????????: ?????? ??????? ?????????? ?????? (- 40 ° C ~+85 ° C), ?????? ????? - ????????? ???, ?????????????? ????? ???????????, ???? - ??????, ??????? ???? ???? ????????? ???????????.
????? ???????? ???? ????? ?????????? ????: ???????? ???? 1W ???? ???????? ????? (???. ???? ???? ???????????? ?????? ???????? ????????), 100,000 ??????????? ????????? ????, ????? ???????? ????????.
??????
???????????:?
Low sensitivity: usually 30~50mK, lower than cooling type (<20mK), weak detail resolution, easy to overexpose high-temperature targets (need dynamic range adjustment).
Slow response speed: frame rate is usually ≤60Hz, not suitable for ultra-high-speed dynamic scenes (such as ballistic tracking).
????????? ????????? ?????????: ????? ?????? ?????? ???????? ????????????? ??????????? (????????? ????, ????? ????????), ??? ???? ??????? ???????? ?????? ???????????? ?????.
???? ???????? ????????? ???????????: ???????? ?????????????? (????? ???, ?? ??????????? ???????????) ?????????????? (> 1 ??.??) ????? - ???? ??????? ??????? ??????????????? ?????????????, ????? ??????? ???????? ????? - ???? ???????????????? ?????????????????.
??????????????:?
????????: ???? ??????, ???????? ???????? ??????, ????????????? ?????? ???????? ????? - ???, ???????? ?????? ????, ???????? ???????????, ?????? ?????? ??????, ????????? ??????? ????? ?????????? ???????.
???????: ?????? - ???????? ???? ????? ????, ????? - ????? ??????? ???????.