5.7 Design of Ground Test System
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for data classification, storage, query and extraction; the workgroup switch is
responsible for network communication and data exchange.
(2) The mathematical simulation segment consists of six computers, respectively, used for orbital data generation, photon arrival-time simulation, navigation database construction, navigation parameter estimation, large-scale and
dynamic effect simulation and pulse profile extraction. The orbital data generation computer is responsible for typical orbit and attitude data generation,
two-dimensional and three-dimensional dynamic display, time and coordinate
system transformation, and orbital parameter analysis. The photon arrivaltime simulation computer, which is not shown in Fig. 5.16, is responsible
for pulse phase computation and photon arrival-time sampling. The navigation database construction computer is responsible for establishing, updating
and maintaining the pulsar’s database, and the Sun’s and planetary ephemeris
parameters. The navigation parameter estimation computer is responsible for
pulse profile delay estimating, phase tracking and filtering, orbit and attitude
determining, as well as parameter estimation accuracy analyzing. The largescale and dynamic effect computer is responsible for numerically simulating
the large-scale delay effect of the solar system and the on-orbit dynamic effect
of spacecrafts. The pulse profile extraction computer is responsible for photon
arrival-time correcting, epoch folding and standard pulse profile getting.
(3) The photon detection segment is composed of one signal control computer,
one signal processing computer, one signal control device, one X-ray signal
simulation equipment, one X-ray detector, one set of electronic readout devices
and one set of time synchronization devices. The signal control computer is
responsible for digitizing the pulse profiles to output. The signal processing
is responsible for processing the photon arrival-time sequences. The signal
control device is responsible for generating the electric signals of the pulse
profiles. The X-ray signal simulation equipment is responsible for simulating
and generating the X-ray signals radiated from the pulsars. The X-ray detector is
responsible for receiving the X-ray photons and converting them into electrical
pulse signals. The electronic readout devices are responsible for measuring
the photon arrival-time. The time synchronization devices are responsible for
providing high-precision time-frequency signals.
(4) The evaluation demonstration segment is composed of one performance evaluation computer, ten navigation demonstration computers, one tracking and
pointing control computer, one set of two-dimensional control turntable,
one set of orbit tracking demonstration device and three sets of projection
display equipment. The performance evaluation computer is responsible for
the interpreting the test data and results, diagnosing the abnormal events and
confirming the performance of ground test system. The navigation demonstration computers are responsible for displaying the navigation simulation data in
real time, replaying the test results and printing the reports. The tracking and
pointing control computer is responsible for sending the control commands
for the two-dimensional turntable and the orbit tracking demonstration device.
The two-dimensional control turntable is responsible for realizing the space
369
for data classification, storage, query and extraction; the workgroup switch is
responsible for network communication and data exchange.
(2) The mathematical simulation segment consists of six computers, respectively, used for orbital data generation, photon arrival-time simulation, navigation database construction, navigation parameter estimation, large-scale and
dynamic effect simulation and pulse profile extraction. The orbital data generation computer is responsible for typical orbit and attitude data generation,
two-dimensional and three-dimensional dynamic display, time and coordinate
system transformation, and orbital parameter analysis. The photon arrivaltime simulation computer, which is not shown in Fig. 5.16, is responsible
for pulse phase computation and photon arrival-time sampling. The navigation database construction computer is responsible for establishing, updating
and maintaining the pulsar’s database, and the Sun’s and planetary ephemeris
parameters. The navigation parameter estimation computer is responsible for
pulse profile delay estimating, phase tracking and filtering, orbit and attitude
determining, as well as parameter estimation accuracy analyzing. The largescale and dynamic effect computer is responsible for numerically simulating
the large-scale delay effect of the solar system and the on-orbit dynamic effect
of spacecrafts. The pulse profile extraction computer is responsible for photon
arrival-time correcting, epoch folding and standard pulse profile getting.
(3) The photon detection segment is composed of one signal control computer,
one signal processing computer, one signal control device, one X-ray signal
simulation equipment, one X-ray detector, one set of electronic readout devices
and one set of time synchronization devices. The signal control computer is
responsible for digitizing the pulse profiles to output. The signal processing
is responsible for processing the photon arrival-time sequences. The signal
control device is responsible for generating the electric signals of the pulse
profiles. The X-ray signal simulation equipment is responsible for simulating
and generating the X-ray signals radiated from the pulsars. The X-ray detector is
responsible for receiving the X-ray photons and converting them into electrical
pulse signals. The electronic readout devices are responsible for measuring
the photon arrival-time. The time synchronization devices are responsible for
providing high-precision time-frequency signals.
(4) The evaluation demonstration segment is composed of one performance evaluation computer, ten navigation demonstration computers, one tracking and
pointing control computer, one set of two-dimensional control turntable,
one set of orbit tracking demonstration device and three sets of projection
display equipment. The performance evaluation computer is responsible for
the interpreting the test data and results, diagnosing the abnormal events and
confirming the performance of ground test system. The navigation demonstration computers are responsible for displaying the navigation simulation data in
real time, replaying the test results and printing the reports. The tracking and
pointing control computer is responsible for sending the control commands
for the two-dimensional turntable and the orbit tracking demonstration device.
The two-dimensional control turntable is responsible for realizing the space