上海天文台射电天文科学与技术研究室中文

系统效率

                       L            S            C        X
频率范围（GHz）        1.3-1.8        2.15-2.45        4-7        8-9
系统噪声温度（K）        30               50            17        28
效率（%）左旋          62±2*          60±2         61±1      62±3
效率（%）右旋           60±3           63±2         60±1      61±3
SEFD（Jy）左旋          32±2           75±3         23±1      38±1
SEFD（Jy）右旋          40±1           65±3         25±1      38±1

终端参数

Single Dish

DIBAS (For Pulsar and Spectral line)

DRM (For Continuum)

VLBI

CDAS + Mark5B

DBBC2 + Mark5B

DIBAS (For Pulsar and Spectral line)

Components: 5 Gsps ADC, Roach II, HPC, Storage (80 TB)

DIBAS: Pulsar

Modes: coherent search, coherent folding, incoherent search, incoherent folding

Bandwidth: maximum 2 GHz for coherent; maximum 3 x 2 GHz for incoherent;

Channels: 64, 128, 256, 512, 1024, 2048, 4096, 8192

integration time: 40.96 microsecond for search

Output: PSRFITS

DIBAS: Spectral line

3 IFs with polarizations for input;

Each IF: 29 modes

Output: MBFITS

mode	windows	bandwidth(MHz)	channels	spectralresolution(KHz)	Min int time (msec)
mode 1	1	1500	1024	1464.8	0.5
mode 2	1	1500	16384	91.553	1.4
mode 3	1	500	16384	30.517	2
mode 4	1	187.5	32768	5.722	10
mode 5	1	187.5	65536	2.861	20
mode 6	1	187.5	131072	1.43	30
mode 7	1	100	32768	3.051	10
mode 8	1	100	65536	1.526	20
mode 9	1	100	131072	0.763	30
mode 10	1	23.4375	32768	0.715	5
mode 11	1	23.4375	65536	0.358	10
mode 12	1	23.4375	131072	0.179	30
mode 13	1	23.4375	262144	0.089	40
mode 14	1	23.4375	524288	0.045	75
mode 15	1	11.72	32768	0.358	5
mode 16	1	11.72	65536	0.179	10
mode 17	1	11.72	131072	0.089	30
mode 18	1	11.72	262144	0.045	40
mode 19	1	11.72	524288	0.022	75
mode 20	8	23.44	4096	5.711	5
mode 21	8	23.44	8192	2.861	10
mode 22	8	23.44	16384	1.431	30
mode 23	8	23.44	32768	0.715	40
mode 24	8	23.44	65536	0.358	75
mode 25	8	15.625	4096	3.815	7
mode 26	8	15.625	8192	1.907	14
mode 27	8	15.625	16384	0.954	40
mode 28	8	15.625	32768	0.477	55
mode 29	8	15.625	65536	0.238	100

DRM

For continuum total power;

Input: 2 IFs, each 512 MHz bandwidth;

Bandwidth: tunable with 1 MHz step;

Min int time: 1 ms;

CDAS+Mark5B

4 IFs, each with 512 bandwidth;

DDC structure;

16 BBCs, each with both USB and LSB, bandwidth with 32/16/8/4/2 MHz;

interface: VSI-H

天线性能参数