RPI Program Modes
The following table is a summary of the various RPI program modes as specified in archived CDF files.
| # | Code | Description | Units | Range |
| 1 | Schedule # | N/A | 1-32 | |
| 2 | Program # | N/A | 1-64 | |
| 3 | 01 (L) | Lower Frequency Limit | 1 kHz | 3 kHz-3 MHz |
| 4 | 02 (C) | Coarse Frequency If >0 log steps If <0 linear steps |
1% 100 Hz |
1-100% 100 Hz-1 MHz |
| 5 | 03 (U) | Upper Frequency Limit | 1 kHz | 3 kHz-3 MHz |
| 6 | 04 (F) | Fine Frequency Step | 100 Hz | 100 Hz-1 MHz |
| 7 | 05 (S) | No. of fine steps (no zero value) negative value disables multiplexing |
Unit | +1 to +8 -1 to -8 |
| 8 | 06 (X) | Tx Waveform * 0 = no waveform (passive msmt) 1 = Complimentary (51 msec) 2 = FM/CW "Chirp" (125 msec) 3 = Staggered Pulse (786 chips) 4 = Long Pulse (125 msec) 5 = Short Pulse (3.2 msec) 6 = 0.5 sec Pulse 7 = 1.95 sec Pulse 8 = 8 chip complimentary pulse (25 msec) 9 = 4 chip complimentary pulse (13 msec) -1 to -9 same but no phase switching up to four multiplexed waveforms are supported |
Table | -9 to +9 (no zero value) Each byte contains information on a waveform used in the run |
| 9 | 07 (A) | Tx Antenna options * 1 = Radio Silent (no Tx) 2 = X antenna only 3 = Y antenna only 4 = X+Y in linear polarization 5 = Right Circular Polarization RCP 6 = Left Circular Polarization, LCP 7 = RCP & LCP alternate w.r.t. +Z 8 = X+Y switch linear Pol by 90° -1 to -7 same but bypass antenna coupler |
Table | -8 to +8 (no zero value) |
| 10 | 08 (N) | No. of Integrated Repetitions * Negative means power integration instead of coherent integration |
2N | -8 to +8 |
| 11 | 09 (R) | Pulse Repetition Rate* 0 = 0.5 pps 1 = 1.0 pps 2 = 2.0 pps 3 = 4.0 pps 10 = 10 pps 20 = 20 pps 50 = 50 pps |
Table | 0, 1, 2, 4, 10, 20, 50 |
| 12 | 10 (O) | Operating Mode* 0 = Standby 1 = Calibr /ation 2 = Relaxation 3 = Sounding 4 = Thermal Noise 5 = Whistler 6 = Test Pattern |
Table | 0 to 5 |
| 13 | 11 (W) | Power Limit constraint | Watts | 0-120 |
| 14 | 12 (E) | Start Range 960 km units | 1 Mm | 0 to 255 |
| 15 | 13 (H) | Range Resolution | 10 km | 24 or 48 |
| 16 | 14 (M) | No. of range bins 8, 16, 32, 64, 128, 256, 512, 1024 |
Unit | 8 to 1024 |
| 17 | 15 (G) | Base Gain negative = Fixed Gain positive = Automatic Gain |
Table | -18 to +18 |
| 18 | 16 (I) | Frequency Search 0 = Disabled n = 5 freq spaced by n*244 Hz negative = Default calibration positive = Dynamic calibration |
Table | -9 to +9 |
| 19 | 17 (P) | No. of ranges stored 1-1024 |
Unit | 1 to 1024 |
| 20 | 18 (B) | Bottom of range window | 1 Mm | 0 to 250 Mm |
| 21 | 19 (T) | Top of range window | 1 Mm | 0 to 250 Mm |
| 22 | 20 (D) | Databin Format* 0 = No Data 1 = Calibration - CAL 2 = Double Byte Data - DBD 3 = Linear Time Domain - LTD 4 = Spectral Maximum Data - SMD 5 = Single Byte Data - SBD 6 = Precision Range Data - PRD 7 = Spectral Science Data - SSD 8 = Thermal Time Domain - TTD |
Table | 0 to 8 |
| 23 | 21 (Z) | Threshold cleaning, in % * 0 = no thresholding |
% | 0 to 99 |
| 24 | 22 | Spare program parameter | ||
| 25 | Flight software version | 26-999 |
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RPI: Program Specification in CDF Files
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- NASA Official: Dr. David R. Williams
- Author: L. N. Garcia
- Curator: Dr. E. V. Bell, II
- Version 2.0.2
- Last updated: 07 August 2014