31 (BSTV) ()

32 (/) 321 750300 40lx 115

1 (1) (2) (3) 2 (CCDCMOS)

3 ( )10 30

322 FSS CCDCCD

323 VTRLDDVD () (1) UUmatic3/4 (2) max1/21/2 (3) VHS(S-VHS)1/21/2 (4) 8mm(Hi8) 8mm 8mm250Hi8380400SONYSHARP (5)1 (6)LDVCDDVD EVD

33 ()()() 331 1 (45d8)

2

3 ; , 4 ()

34 341 1 ()PALHVSAFKPALP

(1)3-14 (2) (3)

342 () 1 (1)VHF48223MHz(UHF)470960MHz (2)(VSD) 0.751.25MHz fSfP6.5MHzfP-1.25MHz20 dB

SSB()VSB0.75MHz1.256MHz

(a) (b) ()(c) (AGC)

50Hz15kHz(FM)50kHz75kHzB B2(fm+fm)2(50+15)130kHz mf mf

(3) VSB3-20()8MMz 8MHzVHFUHF683-192167MHz566606MHz88108 MHz8892 MHz

2 (1) ITUC2.5GKu12G

35 351 1 VHFUHF (1kW)(110kW)(10kW)

2

3 8MHz 6.5MHz -1.25MHz 6MHz VSB0.75MHz fm50 kHz50s 10:l 15:1

352 VHFUHF VHF UHF

46 361 1 (1) ()h1h2d h1h2md/ (2) ()() (3) UHF

2 3-554dB(YHF)66dB(UHF) P(kW)Gr(km)(m)h1h2(m)

362 1 ()50km

2 () (1) fL()fL|fPT - fPR|=|fST - fSR|fPTfPRfSTfSR (2) AGC

3 (1)

(2) (3) 37 371 372 ()()